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Solar electro-optical system with capacitance conversion function

A photovoltaic system and conversion function technology, applied in the field of solar photovoltaic systems, can solve the problems of equipment construction cost and power generation cost increase, and power generation reliability decline.

Inactive Publication Date: 2012-07-04
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the service life of the solar photovoltaic system is limited by the electrolyte of the electrolytic capacitor, in addition to reducing the reliability of the overall power generation, it will also lead to an increase in the equipment construction cost and power generation cost of the overall solar photovoltaic system

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  • Solar electro-optical system with capacitance conversion function
  • Solar electro-optical system with capacitance conversion function
  • Solar electro-optical system with capacitance conversion function

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Embodiment Construction

[0043] Hereby, the technical content and detailed description of the present invention are described as follows in conjunction with the accompanying drawings:

[0044] See figure 2 It is a circuit diagram of a preferred embodiment of the solar photovoltaic system with capacitance conversion function of the present invention. The solar photovoltaic system with capacitance conversion function provides a DC power supply through a solar cell 10 , and converts the DC power supply into an AC power supply, and then operates in parallel with an AC power supply 60 . Wherein, the DC power supply includes a DC output voltage Vpv and a DC output current Ipv. The solar photovoltaic system further includes a capacitive conversion device 20 , a DC / DC converter 30 , a DC / AC converter 40 and a filter circuit 50 .

[0045] The capacitive conversion device 20 is electrically connected to the solar cell 10 to filter the DC power provided by the solar cell 10 . See image 3 It is the circuit ...

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PUM

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Abstract

The invention discloses a solar electro-optical system with a capacitance conversion function. A solar battery is used for providing a direct current power supply, and the direct current power supply is converted into an alternating current power supply, and the alternating current power supply is parallelly connected with an alternating current mains supply for operation. The solar electro-optical system also comprises a capacitance conversion device, a direct current / direct current converter, a direct current / alternating current converter and a filter circuit. Moreover, the capacitance conversion device comprises an inductor, a first power switch element, a second power switch element and a capacitor which are electrically connected with one another. Therefore, through the functions of energy storage, energy release and filtration provided by the capacitance conversion device, the conventional electrolytic capacitor is replaced, so that the service life of the solar electro-optical system is prolonged.

Description

technical field [0001] The invention relates to a solar photovoltaic system, in particular to a solar photovoltaic system with capacitance conversion function. Background technique [0002] Since the two oil crises occurred in the 1970s and 1980s, the search and research of alternative energy sources has become one of the main policies of various important countries. Moreover, due to the rapid development of industrialization recently, the shortage of petrochemical energy has caused the price to rise, and another environmental problem derived is that excessive carbon dioxide emissions have caused the earth's climate to be abnormal and the temperature to rise. In order to effectively reduce the dependence on petrochemical energy, many renewable energy sources have emerged, such as solar energy and wind energy. [0003] Since solar energy is non-polluting, non-pollution-free, and inexhaustible, the application of solar energy has considerable potential for development. Due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/48H02M1/12H02M3/06
Inventor 李圣华
Owner DELTA ELECTRONICS INC