ectric cell that Bell had produced. By the 1990s, the reality was that costs of solar energy had dropped and huge PV market grown in Japan and German. The PV market is currently growing 30% per year.
Solar Power comes from sunlight. This source can be harnessed to create electricity for humans. Devices which convert light into electricity are solar panels, known as photovoltaic's, which means ?ight-electricity?
The solar panels are made of solar cells. What is a cell? A small disk of a semiconductor, like silicon. They are attached to circuit. Once the light strikes the cell, light is converted into electricity that flows through the circuit. Primary components foe solar panel is:
Solar panel
Charge controller
Battery and inverter
Solar Panels charge the battery, which provides DC voltage to the inverter and it converts DC to the normal AC.
Individual cells provide small amount of energy, but when connected together as a panel increase the output significantly. The output of solar panel is stated in watts. Wattage is determined by multiplying the rated voltage by the rated amperage. For example it 6 hours of peak sun (during the day) per day is available in an area, the average solar panel can produce about 360 watt hours of power per day. The power of the system varies, depending on the intended geographical location. The electricity is only produced when solar panel exposed to the sun. Solar panels are very上一页 [1] [2] [3] 下一页 |
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