Household solar photovoltaic systems is how the composition of?

A complete set of household photovoltaic Power energy system including: photovoltaic modules, solar controller, battery, solar inverter.

Components: photovoltaic modules commonly used categories are: monocrystalline modules, polycrystalline module, amorphous silicon components. Monocrystalline module efficiency of 12% -18.25% -16.25 polysilicon% module efficiency of 12%, an amorphous silicon module efficiency 5% -8%; silicon or polycrystalline silicon is currently the power level of 3W-310W, amorphous base customized. Qualified components generally cost around $ 4.5-8 per watt.

Controller: the current market a wide variety of controllers, efficacy and price messy, but the total can be divided into two types: one is cloudy basically impossible to charge the battery, one is a cloudy day can also be effective for battery charging, the former very cheap, the latter generally intelligent controller around $ 0.6 per watt.

Battery: Battery now many types, such as lead-acid batteries, lithium batteries, or the advent of lithium water battery, hybrid battery and so on. Commonly used lead-acid batteries are very common purchase or trade-in is more convenient. Another long-life super capacitor battery, the price is very expensive, you must customize. Currently doing one kind of power compensation power is good, doing a lot of storage used to uneconomical. 12V lead-acid battery specifications at prices generally in the 4-8 yuan per AH. Supercapacitor charge capacity of lead-acid battery is the same price of 15-20 times.

PV inverters: Currently, there are two common market, one is the high-frequency inverter, one is the frequency inverter. High-frequency inverter conversion efficiency of 90% or more basic, but the standard household mains inductance circuit especially obvious damage phenomenon. The most obvious experiment is to use cell phone charger when used on high-frequency inverter apparent temperature, some accompanied by high frequency noise, this high-frequency inverter prices generally in the 0.4-0.6 yuan per watt. Another is the frequency inverter, the inverter frequency which is the ideal home PV inverter , because the transformer is relatively large volume, but also requires a lot of heat dissipation efficiency is usually above 80%, to meet the All mains standard appliances. Because every day photovoltaic charging, so the frequency of the inverter from the power slightly larger effect is not obvious. The frequency inverter is generally the price of 1 yuan per watt.