The development of computer technology, the computer put forward green and green power inverter

Green computer refers to harmless to the environment, personal computers and related products green power refers to the green computer related efficiently save electricity power inverter , according to the U.S. environmental protection agency in l992 on June 17, "energy star" program, desktop personal computers or related peripheral equipment, the power consumption in the sleep state, if less than 30 watts, accord with the requirement of green computer, improve the efficiency of power inverter is the basic way to reduce power consumption.

Current efficiency is 75% of 200 w switching dc to ac inverter , power inverter itself consumes 50 watts of energy.

2.2 communication of high frequency switching power inverter

Telecommunication industry has been heavily promoted by the rapid development of the development of communication dc to ac inverter. 

High-frequency miniaturization of switch power inverter and its technology has become the mainstream of modern communication dc to ac inverter system. 

In the field of communication, often will be called a rectifier power inverter, and DC - DC (DC/DC) converter referred to as the secondary sine wave inverter .

A single-phase or three-phase ac power grid is the role of the power to transform the nominal value of 48 v dc dc to ac inverter. 

In SPC exchange with a sine wave inverter at present, the traditional phased type regulated sine wave inverter has replaced by the high frequency switching power inverter, high-frequency switching sine wave inverter (also known as switch mode rectifier SMR) by MOSFET and IGBT high frequency work, general control switch frequency in 50-100 KHZ range, to achieve high efficiency and miniaturization. 

Expands unceasingly in recent years, the power switch rectifier capacity, capacity of f from 48 v / 12.5 A 48 v / 20 A, extended to the 48 v / 200 A, 48 v / 400 A.

Because there are many types of integrated circuit used in communication equipment, the sine wave inverter voltage is also each are not identical, in the communication power inverter system with high power density of the high frequency DC - DC isolation power inverter module, from the middle busbar voltage (generally of 48 v DC) into the various DC voltages, it can greatly reduce the loss, convenient maintenance, and installation, increase is very convenient. 

Generally can be directly mounted on a standard control panel, the requirement for the secondary power inverter is a high power density.

Similar applications include high voltage dc output,solar power inverter stationary type dynamic reactive power compensation, etc.

 At this time of the power electronic technology has been able to realize rectifier and inverter with charger , but working frequency is low, limited in the low-frequency range.

1.3 inverter with charger era

Into the eighty s, large scale and very large scale integrated circuit technology rapid development, laid the groundwork for the development of modern power electronic technology.

Will fine processing technology of integrated circuit technology and the high voltage large current technology organic union, appeared a batch of new type of all control power device, the first is the advent of power M0SFET, led to the small and medium-sized power to the development of high frequency power supply, then the insulated gate bipolar transistor (IGBT), and for large and medium-sized development brings opportunities to high frequency power supply.

Thereafter, MOSFET and IGBT of power electronics is the traditional to the modern power inverter transformation.

 According to statistics, by the end of 1995, power M0SFET and GTR in power semiconductor devices on the market has reached the point of vie, and replace GTR with IGBT have been established in the field of power inverter. 

New device not only provides the ac motor frequency control of motor speed the development of high frequency, make the performance more perfect and reliable, and makes the development of modern electronic technology constantly to high frequency change, for efficient energy saving, material saving of electrical equipment to achieve small, lightweight, mechanical and electrical integration and intelligentization provides important technical foundation.

2. The application field of modern solar power inverter

2.1 computer efficient green power supply

Rapid development of computer technology to lead the human into the information society, but also promoted the rapid development of power technology.

In the eighty s, the computer fully used the switching power supply, take the lead in complete computer solar power inverter. 

Then switch power technology successively in the electronic, electrical equipment.

Electric car the biggest technical challenge and solar panel price is the first battery

Electric car batteries is big, the price is expensive, and can catch fire, as gm in its Chevy Volt power inverter (Chevy Volt) found in a hybrid car.

 According to today's prices, an electric car battery costs up to $15000, not including motor, frequency converter and inverter used for motor control, and other power inverter transmission cost of the system. 

In order to build a competitive electric cars, Chinese auto makers need to significantly improve the battery technology, but according to the survey of warburton,power inverter according to China's battery technology to be lagging behind compared to western standards for several years. 

Although byd (002594) gives the opposite, power inverter with charger but warburton didn't believe the company has the unique technology, and he told the other China company or organization can develop excellent battery technology in the future are sceptical.

, warburton said, besides faces many challenges in technology, electric cars currently on the price is not competitive,power inverter with charger and performance is not driven by internal combustion engine vehicles. 

According to the price of cars, the gasoline accounted for 70% of the retail price of petrol stations in Europe, electric cars to compared with gasoline engine and diesel engine car is competitive on price, oil price would need to climb to $300 a barrel to $500.

In countries with low gasoline taxes of solar panel price would need to climb to a higher level.

In the United States, need to rising oil price to $800 a barrel,power inverter while in China, oil prices need to rise to $500 to $700 a barrel.

In warburton's view, only when economically worthwhile (electric cars, falling prices, or become cheaper) due to government subsidies,solar panel price "with logical thinking" consumers will buy new energy vehicles. 

He didn't see any signs that China's auto makers will be able to significantly reduce production cost of electric cars, so the only remaining question is, in the name of improving national energy security, Chinese government in support of new energy vehicle technology development will be how far.

The task has also had important grid tie inverter at present.

If there are any country to be able to successfully implement a fully electric vehicle industry development plan, grid tie inverter it must be Chinese.

In addition to the powerful support of political, China's urban infrastructure construction is still in progress at present, in the next few years estimated that 270 million people will be moved from rural to city.

 Due to on a piece of blank paper almost composed blueprint for future development, China has considerable freedom of choice space, solar grid tie inverter to build electric car charging stations and other industries needed infrastructure.

 Moreover, China's car culture is still very young,grid tie inverter the Chinese are also not accustomed to the American people used to the long distance and fast driving.

 In theory,solar grid tie inverter consumers should be more easy to accept the electric car in China there are many limitations.

Market research firm Sanford Bernstein (Sanford c. Bernstein & Co., LLC) in The auto industry, sine wave inverter a senior analyst at Max.

Warburton (Max Warburton) in his recently published The authoritative books on China's automobile industry analysis of The auto industry in China, Part 1: seeking Global Competitiveness, Technology, ability and Ambition and Politics (Chinese Autos dropped, Part 1: The Quest for Global Competitiveness, Technology Competence, Ambition and Politics says),grid tie inverter new energy vehicles industry development plan of China raises profound questions about whether it is feasible.

 In warburton interviews for this study,sine wave inverter a German car company executives said like this:

Implementation of the new energy vehicles industry development plan of China has met all of the other countries and regions of the world has been facing the exact same technology barriers, China's financial and commercial laws may differ from other countries, but the laws of the laws of physics and chemistry are the same as all over the world.

Even so, power inverter accounts for only 0.6% of the electricity supply.

Apart from the high cost of solar, wind and other renewable energy sources is vulnerable to weather, the output power inverter is very unstable.

Taketoyo solar power station is a power inverter plant of Chubu Electric Power Inverter, covers an area of ​​140,000 square meters, about the equivalent of 20 standard football field, equipped with a 1.3 m long, 1 meter wide, nearly 40,000 solar panels installed capacity of 7,500 kilowatts, annual generation capacity of 7.3 million kilowatts, but still not as an installed capacity of one million kilowatts of thermal power stations or nuclear power inverter capacity of eight hours.

Acting Director of Taketoyo solar power stations, Hori said Ryuji any kind of energy has advantages and disadvantages, power converter can reduce greenhouse gas emissions, but require a large area of ​​land, the high cost of operation is low, power converter is not stable, it is difficult to become the basis of power.

Nuclear power plant restarted difficult.

Fukushima Daiichi nuclear power plant accident broke Japan's "safety myth".

 For a time, people talk about the mere mention of the "core", "anti-nuclear power inverter with charger in the country, the public distrust of nuclear power is unprecedented.

But as time goes on, the Japanese society views on nuclear power inverter with charger is becoming more and more rational appeal to restart the nuclear power's voice began to appear, but the contradiction remains entrenched polarization of public opinion, serious opposition.

Nevertheless, for practical reasons, the Japanese government and power companies try to restart the nuclear power inverter with charger has never stopped.

 June 16, 2012, when he was the Prime Minister of Japan Yoshihiko Noda announced the restart in the 3rd and the 4th units of the Oi nuclear power plant in Fukui Prefecture, restart the Fukushima nuclear accident after the first nuclear power plant.

 Since then, the major power companies have been ready to work for a further restart.

Over-reliance on coal-fired power inverter with charger far more than prices of electricity bills

Japan fired power inverter  are operating at full capacity to compensate for the huge power inverter left by the nuclear power inverter to stop a number of old coal-fired power inverter emergency restart in the event of an accident, could trigger large-scale blackouts.

Located in Aichi Taketoyo fired power stations was established in 1972, the machine for fuel oil.

Acting Director Hori Ryuji told a news agency reporter, in October 2009, due to aging equipment, Chubu Electric Power inverter Company to stop and prepare to dismantle.

 May 2011, the Hamaoka nuclear power inverter with charger was ordered to stop, Chubu Electric Power Company had decided to restart.

By the end of July 2011, after nearly three months of hard repair, 2 Unit re-generation,power inverter with charger aging equipment is still plagued them, make it in perpetuity.

Difficult burden-renewable energy.

In this context, Japan has sights on power inverter with charger and other renewable energy sources. 

In July 2012, Japan began the implementation of renewable energy fixed price acquisition system, priced at about 2-5 times the price of sine wave inverter  or nuclear power,sine wave inverter give investors a certain profit margin. 

The Japanese government hopes to attract more enterprises to invest in renewable energy.

The solar investment soared after the implementation of this system.

According to statistics,sine wave inverter as of the end of November 2012, the installed capacity of solar power generation in Japan reached 3.26 million kilowatts, equivalent to about three nuclear power generating units, accounting for 90% of the renewable energy sources.

Input coal development of thermal power inverter, the ability to meet the energy demand in Hubei?

Yin Zhengmin: from Hubei to speed up to build promotion of the strategic plan and the requirements of the development of ecological civilization of central China strategic pivot point of view, an urgent need to change the existing mode of energy development and utilization in Hubei. Been, Hubei energy consumption terminals dominated by coal, total coal consumption in 2012 to more than 1 million tons of standard coal, accounting for 67.3% of total energy consumption, less natural gas, power inverter and other clean energy consumption accounted for 18% .

Is expected in 2015 and 2020, the province's coal consumption reached 1.59 and 1.78 million tons respectively. Coal-dominated energy consumption structure has brought many problems of environmental pollution, a serious impact to the people's production and life.

Hubei Province, "second five" energy development plan, if only rely on building local thermal electric power inverter, thermal power inverter site in Hubei Province from 2015 and 2020 respectively need to add 4, 8, the new site covers an area of ​​760 hectares , 1520 ha of land resources consumed huge; adding sulfur dioxide emissions by 36 million tons, wind turbine inverter 90 million tons of new nitrogen oxide emissions were 160,000 tons, 400,000 tons, making the PM2.5 environmental issues such as governance The difficulty further increase, Hubei Province, "second five" comprehensive energy conservation program of work to determine the target will be difficult to achieve.

Hubei goal unit GDP energy consumption fell to 0.993 tons of standard coal / million, wind grid tie inverter down 16% from 2010; across the province,wind turbine inverter the total amount of sulfur dioxide and nitrogen oxide emissions control less than 637,000 tons, 586,000 tons more than in 2010 annual decrease of 8.3%, 7.2%, respectively.

The same time, since August 2010, the National Development and Reform Commission official launch of the low-carbon pilot carbon emissions trading, clean energy quota system,wind grid tie inverter such as a series of policies and systems are being actively explored in need as soon as possible to consider research and co-ordination of these policy factors on the development of energy utilities in Hubei the important impact of advance preparation, rational distribution.

Hubei provincial government attaches great importance to energy saving and emission reduction, and comprehensively promote the construction of "ecological Hubei unit GDP energy consumption in 2015, the province, and carbon dioxide emissions reduced by 16% and 17, respectively, than the" Eleventh Five-Year "period % binding target. Accelerate the transformation of energy development, adjust and optimize the energy structure, reduce the proportion of coal, and raise the proportion of low-carbon and carbon-free energy, and achieve the diversification of the energy structure and clean, which is a major issue facing the current energy development in Hubei Province.