Serial photovoltaic array high-voltage isolation apparatus

A high-voltage isolation and photovoltaic square array technology, which is applied in the direction of output power conversion devices, instruments, and electric variable adjustment, can solve problems such as high cost, high risk, and long research and development cycle.

Inactive Publication Date: 2015-09-16
北京科诺伟业科技股份有限公司
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of long R&D period, high cost and high risk of series equipment which restrict the rapid development of series photovoltaic array, and propose a series photovoltaic array high-voltage isolation device, which can integrate various grid-connected inverters device

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  • Serial photovoltaic array high-voltage isolation apparatus
  • Serial photovoltaic array high-voltage isolation apparatus
  • Serial photovoltaic array high-voltage isolation apparatus

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0047] Such as figure 1 , figure 2 As shown, the series-type photovoltaic array high-voltage isolation device of the present invention is composed of a multi-winding high-voltage isolation transformer T, a power-optimized single-phase or three-phase voltage regulation circuit U1, and a DC power output circuit U2. The input end of the multi-winding high-voltage isolation transformer T is connected to the output end of the power optimization single-phase or three-phase voltage regulation circuit U1, providing n grid-connected inverters with phase-locked adjustable single-phase or three-phase AC voltage output. The output end of the multi-winding high-voltage isolation transformer T is connected to the input end of the DC power output circuit U2, and the output AC power of n grid-connected inverters and power optimized single-phase or three-pha...

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Abstract

A serial photovoltaic array high-voltage isolation apparatus consists of a multi-winding high-voltage isolation transformer, a power optimization single-phase or three-phase voltage regulation circuit and a direct-current power output circuit. The multi-winding high-voltage isolation transformer consists of n input windings, a voltage regulation input winding and a power output winding, and n is an integer not less than 1. the input ends of the n input windings of the multi-winding high-voltage isolation transformer are correspondingly connected with the output ends of n inverters respectively. The input end of the voltage regulation input winding is connected with the output end of the power optimization single-phase or three-phase voltage regulation circuit. The output end of the power output winding is connected with the input of the direct-current power output circuit.

Description

technical field [0001] The invention relates to a series-type photovoltaic square array high-voltage isolation device. Background technique [0002] At present, the application forms of photovoltaic power stations at home and abroad mainly include centralized, distributed, off-grid, etc. Around various forms of photovoltaic power stations, various types of equipment are introduced. Typical equipment includes centralized and string inverters, with mature technologies. Applied to the market in large quantities. With the rapid development of photovoltaic power plants, owners have higher and higher requirements for photovoltaic power plants, and the excellent resources for building photovoltaic power plants are becoming less and less, and the application scope of photovoltaic power plants has developed to remote areas. Since the construction of power stations in remote areas is far away from the grid-connected point, the construction cost of the existing technology is high and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02M1/092
Inventor 王哲许洪华林景祥邢佳魁
Owner 北京科诺伟业科技股份有限公司
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