You don't know about the double component

Solar photovoltaic webex: now increasingly scarce land resources, how to in a certain area, get a higher power, is the pv community have been research topic.

the double component, generally speaking, both sides by light can be power of crystalline silicon solar cells is crystalline silicon solar cells, commonly known as double batteries. While using the conventional component preparation technology will double packaged battery components, it is called a double component.

unlike conventional photovoltaic modules back not pervious to light, the back of the double component with transparent materials ( Glass or transparent backboard) Encapsulation and become, in addition to the positive normal power, it also can receive back scattered light from the environment and the reflected light to generate power, it has higher comprehensive efficiency.

as shown in the above, the double component receives the irradiance is mainly composed of positive input and input on the back, positive input level mainly includes the irradiance ( GHI） With diffuse ( 济) , mainly includes the reflection on the back of the input irradiance. Traditional components only receive positive sunshine, mainly including level irradiance and diffuse.

Peter Johnson in May 15th seminar shows us photovoltaic system, UL lab, double component receives solar irradiance experiment intended to understand the diffuse irradiance reflect and affect the irradiation.

experiment is in Texas, the state of Illinois, level instrument was used to measure irradiance, direct irradiance, scattering irradiance irradiance and reflection.

　　1. We can find the back scattering radiation of irradiance and the irradiance values are similar, and the relatively small, showed the scattered radiation to lower their impact.

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is solar cells convert sunlight directly into electrical energy of a semiconductor device. Solar power has many advantages, such as safe and reliable, no noise, no pollution; Energy widely available, without having to consume fuel. No mechanical moving parts, easy maintenance, long service life; Short construction period and size of arbitrarily; Can unattended, also need not erection of transmission lines, also can be easily combined with buildings, etc. ; These are all less than the conventional power and other power way. Solar power is made use by photovoltaic effect principle of solar cells convert solar radiation directly into electricity generation. It consists of the solar cell phalanx, charge controller, battery, dc/ac inverter and other components.