European film power inverter connected to the grid is analysed

Templin Belectric has power inverter project developers will be located in Germany, Europe's biggest film solar photovoltaic power grid.

The plant installed capacity is 128 mw, enabled the manufacturers First Solar manufacturing more than 1.5 million film components and SMA's 114 central inverter.

The plant was built in the Russian military airport before Gross Dolln, will mainly supply power for the German capital Berlin.

BELECTRIC CEO Bernhard Beck (Bernhard Beck) said: "distributed solar power plants will be in Germany's electricity market structure plays a decisive role in the future."

"Such power generating solar power is the most economical way. At present, our cost has almost reached the onshore power inverter with charger levels."

First Solar European business development director Stephen alesina (Stefan Degener) added: "the project highlighted the level of our technique in the field of Solar power plants. Big ground installation of photovoltaic power station not only helps to provide stable power supply, also ensure that the power supply at stable prices for a long time."

U.S. solar stocks on April 24 in the democratic and republican senators jointly launched renewable energy present sharp gains under the stimulus of corporate tax bill. U.S. solar cell maker, SunPower corp. gained 10.45%, $12.26, at closing high since March 20. Cadmium telluride thin film Solar cell module manufacturers First Solar, Inc., surged 11.82%, $45.11, hit a closing high since February 9, 2012. Jinkosolar (Jinkosolar Holding Co.) have also jumped 15.34%, $6.54, hit a closing high since March 14.

Platts, and other media reports, Delaware democrat senator Chris Coons, the democratic senator Debbie Stabenow of Michigan, republican senator Lisa Murkowski of Alaska, grid tie power inverter and Kansas republican senator Jerry Moran, 24, renewable energy enterprise tax bill proposed joint allows solar energy, wind power, etc. Companies adhere to the "Limited liability Partnership (Master Limited Partnership, MLP)" architecture.

MLP system allows operators in the pattern of the joint stock company when raise, do not need to be class corporate tax, shareholder dividends income tax rates, two layer only need to pay individual income tax rate (partners). The tax law is currently only applicable to oil, natural gas and the related pipe manufacturers.

Yesterday, the power inverter modern express reporter saw in their laboratory

This device looks very simple, is made up of 200 w power inverter , control box, charging pile, electrical terminals of four parts, through the cable connection between each other, the control box contains a storage battery, controller, inverter, voltage display instrument, universal socket, protection device etc.

Xiao li told reporters that the device frame carport installed at the top, can run. Normal light conditions, daily output for two electric bicycle charging for 4 hours, the charge for about 18 km to electric bicycle ride. "Understanding after the conversion, you can according to the carport car how much quantity, to determine how many watts of solar panels installed".

Community willing to trial, the students will have contribution to the research results

However, nanjing don't have good weather every day. In continuous rainy weather, electric PV inverter are charging problem how to solve? To this, Mr. Li and his "army environmental interest groups" in the camps also have countermeasures.

In the laboratory, the reporter also saw a windmill equipment. Xiao li told reporters that it was a small wind power generation equipment, their preparation and combination use of solar power generation equipment, installed in a carport together on top, so that "scenery complementary".

This "scenery complementary power generation equipment is not as your imagination. Mr. Li and his interest group spent less than 10000 yuan, is developed.

"It costs 10000 yuan, in addition to materials, tools, also includes the test, the processing fee." Xiao li said, really put into use, the cost must be less than 10000 yuan.

Recently, xiao li and interest group of the students are ready to install the power generation equipment to the school of carport, demonstration run, wind turbine inverter and will according to the using effect, make continuous improvement.

The "scenery complementary power generation equipment can be widely available," xiao li did not think too much about this. He tells a reporter, if there is a district of nanjing is willing to try, they can take their own inventions, no reservations. Now, however, they consider their own safety equipment, to prevent theft problem, in addition to the safety of the trial process.

The proposal has received at least one oil and gas support organization. American petroleum institute (API) President Jack Gerard on April 23, at bloomberg new energy finance summit, said the agency support in congress, as this will assist in wind power and solar energy industry to achieve the target of independent operation, no longer need everywhere rely on the federal government's subsidy.

The GaN and SiC will score back to introduce the use of the development trend of pure sine wave inverter

The will after explaining the basic principle of grid tie inverter, analyzing the principle of improve performance by SiC, GaN, and so far grid tie inverter research and development situation of the two kinds of materials.

High pressure and low conduction resistance cannot be both at the same time

The first to introduce the basic principle of grid tie inverter. Power components are usually shut down (as) and open (conducting) using two kinds of condition.

Closed, that is,power inverter must be completely disconnect current voltage required.

About the opened state, required in the case of loss minimum, also is the minimum resistance through the current (voltage).

Closed under Vb components can't maintain the insulation state of voltage is called the breakdown voltage,power inverter or simply referred to as stress.

Closed resistance is closely related to the element size, because be components of resistance per unit area, so the use of indicators on resistance is characterized by RonA (A area).

In general, the higher the pressure, the smaller the conduction resistance, the higher the performance of the pure sine wave inverter, but pressure and reciprocal relationship between conduction resistance.

This is due to the working principle of pure sine wave inverter.

Here in the most simple pure sine wave inverter, schottky barrier diode (SBD) as an example, introduce the pressure relationship with the on resistance (figure 2).

Diode in a closed state is reverse biased condition, semiconductor is in no charge carriers (electrons and holes) run out of state.

Can be in a state of depletion of the semiconductor layer as insulators, shut off the electric current through the layer.

Power semiconductor photovoltaic inverter-saving ace

Power semiconductors as grid tie inverter saving ace, much attention has been paid to research and development is increasingly active.

This series introduces grid tie inverter device research and development trends, required materials and application technology, etc. 

GaN and SiC is the grid tie inverter are developing behind the current silicon semiconductor material of a grid tie inverter, the serial will be invited to the first time familiar with the staff of the two materials to explain.

Power semiconductor devices (hereinafter referred to as the " solar inverters ) is the effective use of electric energy is the indispensable key components.

From the power of the personal computer solar inverters products and household appliances, electric cars and railway vehicle inverter, solar inverters system to the power regulator, such as solar inverters components used in every field of people around (figure 1). 

At present, resources and energy problems more and more serious, people have high hopes to improve the performance of the solar inverters device.

Figure 1 photovoltaic inverter components are widely used

Power device has been personal computers, white goods, electric automobile, railway vehicle photovoltaic inverter, photovoltaic inverter system power regulator, etc.

Support modern society of silicon power components from the beginning of the thyristor, after bipolar transistor (BJT), power MOSFET, the evolution of the insulated gate bipolar transistor (IGBT), has more than 50 years of development history.

Silicon power device development has become increasingly mature, the performance is very difficult to significantly higher as it has in the past.

Therefore, as a new semiconductor materials can leap improve performance, the band gap is very big "broadband gap semiconductor silicon carbide (SiC), gallium nitride (GaN) bears the ardent expectations of people.

Who created the dangerous chemicals in domestic characteristics classification and grading and power inverter

Characteristics of the pattern recognition power converter and the method research;

Two test methods are the UN ecosoc dangerous chemicals expert committee approval to become an international authoritative method, listed in the "international rules" danger;

Research results widely used throughout the country,power converter for the implementation of the national dangerous chemicals regulations and the establishment of the legal inspection of import and export of chemicals in China system provides important technical support.

3. The system is put forward ideas and inspection and quarantine inspection and quarantine subject dynamics model of the development of the study, published "series of power converter safety and inspection and quarantine safety book".

4. 2 items successively won the national scientific and power inverter  progress second prize, 5 provincial awards first prize, in the domestic and foreign authoritative scientific journals published more than 100 (including the IF > 9, 6),power inverter to the persons involved 48 national patents, software Copyrights for 3 times. 

128 items of formulating national standard, published monographs 8 (including English book 1).

5. Twice won the provincial "power inverter", led the team won the ministry of science and power inverter of "11th five-year plan state science and power inverter award for the best team in implementing the plan".

GuiWeiHua committed to complex non-ferrous metallurgical process control theory and power inverter with charger research, presided over by the national natural science fund subject of major projects, key projects, 863, 973, national science and technology research, national high-tech industrialization and factory school 46 major scientific research projects of cooperation.

Proposed complex non-ferrous metallurgical process intelligent optimization control theory and methods, break through the large high strength aluminum alloy component preparation the key technology of major equipment automation, developed a series of intelligent optimization control system, and successfully applied in copper, aluminum, lead, zinc and other major non-ferrous metal production process, effective.

To improve automation level of nonferrous metallurgy power inverter with charger in China has made a great contribution to the, promoting new industrialization process. 

Major science and power inverter with charger achievements and contributions include:

Light is called science power converter of hunan

In September 1996, by XiangJi famous scientists, the original way of the Chinese academy of sciences, academician donor donations, power converter enterprises and institutions and the government of hunan province, approved by the people's bank of China branches in hunan province, hunan province home office registration, "hunan light called foundation for science and technology was formally established.

The foundation Xiong Qingquan served as legal representative by the power converter provincial party committee secretary. 

By President Xiong Qingquan foundation council, vice chairman yuan longping, Zhang Yin south and 13 directors and supervisors.

"Hunan light called science" selection once every two years,power converter amply rewarded within hunan province (including the central units in hunan and other provinces to hunan investment units), rely on scientific and dc ac converter  progress, for the province's economic construction and social development of science and dc ac converter workers of making outstanding contribution.

Hunan light called awards selection, and the first since 1996 to 2012, after eight sessions, a total of 48 excellent science and dc ac converter personnel are rewarded (including LiuYeXiang LiuYouMei Huang Boyun, Xia Guhui, Zhong Zhihua, Qiu Guan weeks, Ding Rongjun seven was elected to the Chinese academy of engineering technical personnel after winning). 

The award greatly aroused the enthusiasm of hunan province science and dc ac converter workers, effectively promote the province's science and technology, economic and social development.

Wang Libing from food safety and inspection and quarantine requirements, presided over 12 science and grid tie power inverter plan projects, such as national "863", the province departmental level topic dozens, formulate relevant national standards, 128 in the food safety inspection and quarantine has made a series of innovative achievements.

The major scientific and grid tie power inverter achievements and contributions are as follows:

1. Development of surplus chiral nano structure materials; Based on biological identification system, the harm of functional nanomaterials factor nano biological sensing monitoring series method, puts forward the food safety and inspection and quarantine new hazard factor detection principle of the new method; Established risk factors of high flux characterization with characteristics of key grid tie power inverter and methods of pattern recognition system. 

Research results in the Account Chem.

Res., such as the international first-class academic journals, to crack, and parse the foreign technical barriers have important significance to our country advantage industries, China's border security and food security.

2. To establish high visibility into and out of the product safety and risk assessment grid tie power inverter and the method of fuzzy comprehensive evaluation system;

Global PV inverter market landscape is expected to shift to emerging markets

According to GTM Research Research, according to a report released the latest due to the continuous development of low-cost Asian companies, the European PV inverter manufacturers found its dwindling profits. Growing competition also come from a diverse group.

Overall, the global demand for change will continue to "torture" the PV inverter supplier. Another important factor is the commercialization of advanced technology, such as modular power electronics (MLPE).

According to the current weakness of the pv market situation and product oversupply, margins this year will shrink further. Average price for grid tie inverter , the downward trend will continue. In 2012, its price is $0.22 per watt, by 2016 the price will come further down to $0.14 per watt, which means that the year fell to 10%.

Throughout 2012, the main stock markets continue to channel, the European market shipments further stagnation. The GTM Research for the future Research is expected to several large emerging markets such as China, Japan and the United States of shipments will increase.

The report predicts that by 2014, with the struggling in life and death on the edge of the inverter suppliers to exit the market, will integrate the grid tie inverter market. Emerging markets will lead to between 2015 and 2016, GTM research predicted a surge in shipments of these markets will appear.

GTM Research, moreover, published Research this is called the global PV inverter prospect in 2013: technology, market, and survivors report lists the world's ten biggest photovoltaic inverter . The ranking is based on product supply, can be ordered by financing and growth prospects.

Credit suisse to ABB's financial consultancy, Cleary Gottlieb Steen & Hamilton LLP for ABB legal adviser. Goldman Sachs & Co. for Power - One of the financial consultancy, Gibson, Dunn & Crutcher LLP for Power - One legal adviser.

ABB is the world's top 500 list of leading enterprise in the field of power and automation technology. ABB is committed to helping power, utility and industry customers to improve performance and reduce impact on the environment at the same time. ABB group business spread all over the world more than 100 countries, with 145000 employees. In 2012, ABB in the United States sales revenue of $6.7 billion, nearly 20000 employees. ABB in China include research and development, manufacture, sales and engineering services to all business activities, with about 19000 employees, set up 36 enterprises and local sales and service network across 90 cities in China.

Change especially electrician high grid tie inverter successfully entering the Indian market

Change especially grid tie inverter companies signed with India PT company four TBEA - GC - 500 KTL grid tie inverter procurement contract, change especially electrician high grid tie inverter successfully entering the Indian market.

TBEA - GC - 500 type KTL grid tie inverter has been through the "golden sun", such as TUV, ENEL, domestic and foreign many authoritative attestation, and in September 2012 passed the low voltage through its field tests, the reliability, conversion efficiency, power quality and other technical indicators have reached the international advanced level, products are now widely used in domestic and foreign markets.

The project is located in the Indian state of rajasthan, belong to India's national pv projects,grid tie inverter is expected to realize installation at the end of April, 2013, will play a good demonstration role.

The entering the Indian market is change especially electrician power inverter company, following the November 2012 in India achieving successful after the interconnection of 50 kw power inverter and a breakthrough, at the same time become the domestic power inverter market take the lead to achieve the high power inverter in India successfully using inverter supplier.

Shipments increased by Asia, in 2012 the global pv market in the world buck the trend under the condition of the power inverter recession, increased by 5%, to $7 billion for the first time, the revenue from $6.7 billion to $7.1 billion in 2011.

Although pv capacity growth is slowing, price is lower, power inverter sales or rose, under the market environment of sluggish global solar power inverter is it has been a success.

 Asia's strong growth in the fourth quarter promotes the growth of solar power inverter business, this is offset by the emergence of Europe, Africa and the Middle East's 20% drop in succession.

This helped 2012 shipments increased from 27 gw in 2011 to 32 gw in 2012.

Revenue income due to the fierce price competition and to low-cost market such as China, India, eastern Europe and subdued.

These areas very favour those large solar power inverter at lower prices, resulting in the average price of inverter has fallen dramatically, in addition, it also led to the sales growth to slow in 2012.

For PV inverter, should not only look at the cost of this industry competition

And more to see competition with the cost of traditional energy sources, no matter how to the mining of traditional energy costs is rising gradually, and the cost of power inverter  is in rapid decline, the cost of the size of the competition is the most meaningful; In addition to the positive elements of technological progress to reduce costs, discuss power inverter competition, for the Chinese pv enterprises, should not only look at the domestic market has how old, also look at how the international market.

To research power inverter investment market segment

Wang wei: for a specific investment direction, we are very concern about interconnection system service enterprise, is also attention to import substitution products production enterprises, such as equipment manufacturing enterprises.

And important auxiliary equipment and accessories production enterprises in the power inverter chain, such as inverter production, due to the technical content is not high, the domestic product very competitive; Such as sand slurry production, it occupy a big share in the grid tie inverter component production cost, market demand is very big. 

Around these areas, we are very concerned about the sales in the tens of millions of yuan, net profit in millions of dollars of "grid tie inverter". 

We for those relying too much on local government, focusing on the capital of grid tie inverter companies are not interested in game, from a development perspective, the government and the enterprise demands are different, the government want to GDP, and enterprises to profit, can't see for the future of this kind of enterprise.

Red Hui: since China's reform and opening up, especially since the capital market establishment, investment diversification, investment grid tie inverter do have with the help of local government power and means to enlarge capital, scale, the rapid development of grid tie inverter of a replication, but now it seems is not successful, the development is always lurking in the huge risk. 

Anyway, make good use of capital operation means investment of PV inverter, first suggests capital still bullish on PV inverter in the future, a common goal is to hope that the healthy development of the PV inverter.

Due to the rapid development of semiconductor technology, application of large scale integrated circuit, and is widely used in computer, UPS PV inverter is also developing at an amazing pace. UPS power production starts late in our country, the small under 5 kva UPS power inverter for the last few years, especially lkVA UPS power inverter has a certain development.

This chapter mainly from the following several aspects to introduce the basic information of the UPS PV inverter, why the computer with UPS power supply; The basic working principle of UPS; How UPS power market introduction and selection; UPS grid tie inverter installation and use of management; Knowledge about special UPS battery.

Why do you say about this grid tie inverter in the short term pessimism

And is bullish on the future long-term investment opportunities? Because in the short term, both in terms of the is given priority to with chemical method of polysilicon production, raw material or the component production scale effect, all could not see the product cost the possibility of a sharp decline, coupled with serious supply exceeds demand and capacity in Europe and the "grid tie inverter" factors, in the short term investment opportunities opportunities were limited.

The future for a period of time, components of the highest conversion rate has been tending to actual implementation possible, integration of industry scale effect is also limited to lower cost.

Investment in the photovoltaic industry, as a decline in the cost of we most care about problems, though, don't think that Moore's law applicable light volt grid tie inverter but believed that the greatest opportunities of cost reduction in polysilicon feedstock, due to technological advances, reduce the cost of polysilicon production is remarkable.

Learn material, I believe as long as the storage of the raw material is enough big, with the improvement of grid tie inverter, production cost reduction is only a matter of time.

The wind grid tie inverter progress is likely to appear in the United States, we have received a lot because of advanced foreign wind grid tie inverter to investment request.

If polysilicon production cost can be decreased from $20 a kilo to a $10 or less, what will bring in the wind grid tie inverter competitiveness, it will be a "money" the arrival of the era.

When everybody don't look good on the market, is perhaps the most worthy of investment.

Red Hui: agree with you on the silicon raw material to produce the competitiveness of the future due to technical progress to bring costs down judgement and confidence, believe that human the infiniteness of the cognition of natural and wind grid tie inverter progress of great ability.

Is different from you on power inverter in the short term, the four or five years is worth watching this analysis, I think the investment in the power inverter, the secondary market can not to focus on one or two years, because it is in phase to inventory the cruelty of integration.

In the primary market, however, from now on, industry capital should stay focused on market opportunities.

I time analysis of the current pv market is: starting from the middle of industry consolidation takes four to five years, during which is divided into two stages, and the price of the first stage is irrational stage, because of the local governments and financial institutions with competitive enterprise bankruptcy damage not don't want to see, it is only through brutal price strangulation of crowding out, so as to realize the relatively reasonable supply and demand, this stage need 2 years time.

The second stage is rely on technological progress to bring cost down the price of rational stage, from quantity to quality differences between different enterprises will take place during this period, this time by any one, secondary market is worth strategic investors pay special attention to.

Agree with you about power inverter relies on scale effect makes little sense to slash costs, but the difference is I the comparative cost of more emphasis on the energy industry.

First of all, realize the spontaneous for Power inverter private use

Power inverter  side and electrical terminal almost zero distance, greatly reduce the cost of electricity transmission and loss; Second, does not affect the construction basic functions, such as daylighting also can have the effect of heat insulation in summer; Third, the construction cost is low, the installation is very simple, just like air conditioning separate-bodied air-conditioners, and easy popularization; Fourth, the power inverter can be brought into a huge amount of consumer market, completely can solve China's power inverter manufacturing serious overcapacity problem; Fifth, directly aimed at mass consumer B2C sales mode, can help enterprises to form a good cycle of cash flow, and is expected to promote the benign development of enterprises and industries. 

And the pressure is so much smaller government subsidies, need to do is just to introduce appropriate encouragement policy and market regulation, and put up a few money to subsidies, the broad market of power inverter is likely to be activated. 

24-year-old said, this is the most economical mode of renewable energy subsidies.

"In suzhou area, per kilowatt power converter system of annual output is about 1200-1200 degrees, and project investment need about 8000 yuan or so, if the price is 1 RMB, even less than a decade to recover the investment.

If the country were carried out on the balcony generating ChuZhuang some subsidy, will be installed to reduce your cost, there must be many people willing to do."

24-year-old calculation shows, if every subsidies of 2000 yuan, ten million of the balcony installation quantity probably only need 20 billion yuan subsidy amount, but it is a nearly equivalent to the three gorges power plant power converter market. 

Through investigation and research, 24-year-old think, according to the situation of domestic construction, use the balcony outside facade installation of power converter system, may be a more realistic power converter application mode. 

"As long as through a share of subsidies to mobilize people's enthusiasm, installation of this market will be effectively inspire enthusiasm, it is entirely possible that there would be no need for government subsidies in a year or two."

He grid tie inverter promotion prospects are optimistic to the balcony.

German grid tie inverter management is the secret of success 

Years as united, 24-year-old experience over the years for yourself is: the end of the restless.

This kind of uneasy cent, comes from the heart of a confused.

During studying in Germany, he has been thinking about a problem, the only more than 8000 people, covers an area of only the size of China's henan province country, why has created more than 1.3 billion population,grid tie inverter land area is larger, the resources is much more rich China more GDP? 

But after a period of observation dc ac converter

He found that in the industrial building grid tie inverter on the roof of way also has a lot to solving problems.

For instance, Chinese companies generally shorter service life, can't ensure the income of grid tie inverter systems for 20 years.

So, the 24-year-old will be the focus of attention, once again back to the larger number of residential buildings.

An accidental opportunity, 24-year-old saw a senior residents will grid tie inverter installed on the balcony facade, this suddenly inspired his inspiration: whether grid tie inverter can also installed on the balcony facade?

With is dry, the 24-year-old immediately started to consult related information about domestic building the balcony, including the design specification and the data of the balcony, and combined with a power converter components and power converter data and dimension data.

At the same time, the arrangement of personnel to relevant design and test.

After calculation, the 24-year-old concluded that the data itself is amazing.

According to his calculations, a 5 m wide residential facade of the balcony, can install a power converter system KWP capacity of about 1, even if in suzhou light resource is not so good, annual output can reach 1200 ~ 1500 degrees.

This for many domestic power converter compared thrifty people, and even family of power converter has enough about six months.

As since the second half of 2012 national related departments have issued more than on file, to promote the development of distributed photovoltaic 24-year-old believes in domestic promotion balcony dc ac converter is ripe.

To that end, he design, made the detailed installation plan.

In 24-year-old opinion, for most Chinese, living in high-rise building in one of the most autonomy are the easiest to implement dc ac converter system installation, only the balcony of the facade.

Promotion of the balcony, he argues, dc ac converter, is undoubtedly a fully staffed.

Yingli group staff Mr Wang told the China modified sine wave inverter economic times reporter

State grid corporation to open the door, a distributed enterprise sales of grid tie inverter will be play a great role in promoting.
"In fact, the components of grid tie inverter and the components of distributed grid tie inverter is not much difference, mainly is the size of the grid tie inverter is different."
According to his introduction, yingli demonstration center construction of the "one-stop" in Spain, the various components, cables, inverter, such as concentrated display sales, yingli staff will design according to the requirements of local residents, and free training.
On April 8th, yingli's official weibo announced consulting platform of distributed power inverter , baoding green garden street, state grid corporation of project can be seen as more yingli group actively respond to a nation of advancing of distributed power inverter policy measures.
Pay attention to the domestic market of yingli, said if market conditions are ripe, at home will also set up the "power inverter supermarket".
Business opportunities?
First want to be able to take the lead in entering see opportunity, to seize market opportunities, but in today's market environment, want to in the power inverter in the market for gold but it is not easy.
Sadie on electronic information industry research institute, a think-tank, says due to small size, a single system and policy system is imperfect, big enterprise in domestic households are distributed modified sine wave inverter 's enthusiasm is not high, is still in wait-and-see posture. Small modified sine wave inverter system contractor eyeing opportunities in, active in the market, but also hidden worries.
In fact, the construction of distributed modified sine wave inverter in power system, modified sine wave inverter safety and power equipment quality requirement is high, any one link appear small problems are likely to cause significant danger.
Waters that suggest enterprise vigilant "investment overheating", should be paid attention to in the winter to improve industry admittance threshold, set up corresponding standards, and to examine the qualification of the plant the contractor.
"In the relevant standard has not been unified before, household modified sine wave inverter is not suitable for promotion."
Cic consultant researcher Ren Haoning energy analysis, high cost, low profitability, subsidies implementation does not reach the designated position, power grid enterprises enthusiasm is not high a number of factors will restrict the promotion of distributed modified sine wave inverter for a long time.

Distributed grid tie inverter: opportunity or show?

Analysts think China now the development of distributed grid tie inverter  has catch little amplification phenomenon, emphasis should be placed on the industrial and commercial enterprises rooftop grid tie inverter, and household grid tie inverter plant at present is not suitable for large-scale promotion, market-oriented operation needs to be time. 

Chinese renewable energy industries association, zhang ping when accepting a reporter to interview, points out that the distributed grid tie inverter is indeed good news for industry, but if the policies encourage en-masse horse, put on a new round of "their" new energy fields, grid tie inverter, not only can't help it may worsen the plight of the industry. 

"Catch small amplification"

Should "leading role" in a distributed power converter  market business rooftop power plant over the past few months, progress has been slow, China economic times reporter in an interview last week, found that the popularity of industry and commerce of distributed power converter far less household power converter. 

Photovoltaic roof based on the experience of developed countries abroad, distributed power converter, for industrial buildings, commercial facilities, and large public buildings more attractive. 

Beijing's first family of power converter director kay said, "the factory has a very large area roof, electricity will also be larger; on the other hand, commercial and power converter prices for two to three times higher than residential electricity, if countries can have subsidies, investment return period may be shortened to four or five years." 

And solar power inverter  in the family field, although has successful owners emphasize family solar power inverter is not difficult to build, as long as the choice of formal manufacturers and installation personnel can understand the technology, but that doesn't seem to be the case. 

Ren Kai when the initial plan for professional solar power inverter plant construction companies, but several large companies have said 3 kw of the project is too small, profit limited "disdain". 

His Ren Kai embarking on the design of distributed grid tie inverter, assembly, maintenance and after-sales and a series of work. 

"Many owners are now in taobao buy component."

After build their own model project, Ren Kai seize the business opportunities and manufacturers established strategic cooperative relations, set up company to provide clients with "one-stop" commercial service of distributed solar power inverter system integration, to survive in the cracks. 

Liar clamor didn't lie to the grid tie inverter court

"The liar is so rampant, incredibly dare to make a phone call to ask if there is any help he paid payment for goods." 11, Mr. Zhang call our hotline 96369 news said, grid tie inverter there are three days after an attempt to scam money liar and give him a call.

Mr. Zhang in the provincial capital runs a stainless steel window business. On April 8, he received a phone call, the other claim to be chase qiao tou hui minority autonomous county liberation of north road army logistics department minister.

Mr. Zhang said, the grid tie inverter other party said to him to make "force" a dozen meters window. Mr Zhang have one bite agreed. 

But then, the minister of "logistics" and let Mr. Zhang help camouflage tent to order. Mr Zhang said he was just wondering, next to his store has several tent business, "grid tie inverter" not to look for them, how to find him? 

But Mr. Zhang in order to preserve this 10 meters of window business, solar inverter  there will be no more ask. So, Mr. Zhang let son online search manufacturer of military tents. Mr Zhang said he had been completely random looking for a manufacturer,solar inverter not "logistics minister" assigned to him. 

After the search to the results, suggest we born to search to the Beijing tongda solar tent technology co., LTD. Contact way told the secretary of "logistics". Before this, Mr Zhang's son back to the factory,solar inverter but factory provide the machine always couldn't get through, only one mobile number. 

Mr Zhang says, before long, the secretary of "solar inverter" is to call him, say has collected 5000 yuan in payment for goods to the other side, let him help to paid the rest payment of 15000 yuan, in the afternoon to go to "force" measurement, we will put the money paid to him. 

Mr. Zhang, a listen to want paid payment for goods, we immediately rejected. "Logistics minister" also politely persuade at first, sine wave inverter  but have been rejected, Mr Zhang minister of "logistics" has become angry from embarrassment,sine wave inverter and claims that don't help in a military court. 

Sum up Mr Zhang says this words obtained. Mr Zhang said, I am also your kindness to help him find manufacturers, how to but want to go to the court.

That afternoon, Mr Zhang went to the window size,sine wave inverter large flux'd like to see the minister of "logistics", by the way. But who know that Mr. Zhang once again to call "logistics minister", said he had to chase after the minister of "logistics" phone is shut down. 

Mr Zhang said, shortly after minister of "logistics" to turn it off, Beijing tongda factory had give him a call in traversing payment for goods. Then he the manufacturer calls for many times, but all the telephone has been couldn't get through. Secretary of "logistics" also disappear. 

But to suggest business outside, "logistics minister" suddenly appeared, again ask tents. Mr Zhang immediately that the tents had to, would like to see "logistics minister".

Although "logistics minister" a promise, when Mr. Zhang told to go to bank again to find him, "minister of logistics" is evading on various grounds, refused to meet with Mr Zhang.