Too engineering Yang can board the fill factor of solar street lamps, you know

Another important parameter of the solar panel is the fill factor (FF, he is the maximum output power and the ratio of the product of the open circuit voltage and short circuit current. FF is one of the important indicators to measure solar panels output characteristic, represents the capacity of the battery in best can output the biggest



solar panel is another important parameter of filling factor FF, he is the maximum output power and the open circuit voltage ( Voltage of the battery under open circuit state in referred to as the open circuit voltage. 】 And the ratio of the short circuit current product.

FF measure solar panels is 【 Solar panels, 太阳能板) Is by absorbing sunlight, the solar radiation through the photoelectric effect or photochemical effect directly or indirectly converted into electrical energy device, the main material of most of the solar panel as the 'silicon', but because of the production cost is larger, so it widely used, we still have some limitations. 】 One of the important indicators, output characteristic is with optimal load 'on behalf of the battery Transformer is one of the best load close relation and loss reduction and energy saving. 】 To the characteristics of the maximum power output, the greater its value said battery power output, the greater the value is always less than 1 FF. Due to the series resistance and parallel resistance Resistance: as shown in the first picture of the two parallel connection is called parallel resistance in the circuit, the other by a simple parallel resistance or use appliances ( Electrical appliances, such as, TV, air conditioning, computer, etc. ) Constitute the circuit called a parallel circuit. 】 The influence of the actual solar photovoltaic (pv) 【 Solar photovoltaic power generation system is the use of photovoltaic effects of the sun battery semiconductor materials, the solar radiation directly into electricity of a new type of power generation systems, have an independent operation and parallel operation in two ways. 】 The battery on the fill factor value is lower than type given ideal value. The series resistance, the greater the short circuit current decline, the more there is less fill factor, the more; Shunt resistance the smaller the company solar street lamps, the greater part of this current and open circuit voltage drop, the more fill factor also fall subsequently. Conversion efficiency on the

the price of solar panels conversion efficiency refers to the external connection back to the way the biggest energy conversion efficiency, the best load resistance is equal to the output of the battery power and the ratio of the energy of the incident to the cell surface. Solar photovoltaic battery photoelectric conversion efficiency of 【 The photoelectric conversion efficiency, namely the incident monochromatic photons - Electronic conversion efficiency ( 单色入射光子- - Electron conversion efficiency, abbreviations IPCE) , defined as the unit of time in the internal and external circuit and per unit time the number of the electrons produced can be the ratio of the number of photons incident monochromatic Np. The mathematical expression formula, IPCE = 1240 Isc/( l Pin) Isc, l and Pin, the use of units of mu A cm - respectively 2, the nm and W m - 2. 】 Is one of the important parameters to measure the battery quality and technology level, he with the battery structure, characteristics, material properties, working temperature, the radioactive particle radiation damage and environmental change and so on.