High-frequency isolation inverter and solar power generating system

Abstract

The invention discloses a high-frequency isolation inverter and a solar power generating system. The high-frequency isolation inverter comprises a booster circuit connected with a solar power generating device and conducting filtering and pumping on direct voltage output by the solar power generating device, a high-frequency isolation circuit connected with the booster circuit and conducting direct-current isolation conversion on the voltage output by the booster circuit, and an inversion circuit connected with the high-frequency isolation circuit and conducting inverting transformation and filtering on the output voltage of the high-frequency isolation circuit and then outputting alternating current. The high-frequency isolation inverter can effectively inhibit common-mode leakage currentof a thin film module power generating system and prevent the PID effect of a glass-based thin film module and is small in occupied area, low in cost and convenient to install.

Description

technical field [0001] The invention relates to inverter technology, in particular to a high-frequency isolation inverter and a solar power generation system. Background technique [0002] The inverter equipment currently used in distributed solar power generation systems is mainly developed based on the characteristics of crystalline silicon components. The distributed solar power generation system includes solar thin film components, confluence kits, inverters, and power distribution cabinets in sequence. This type of inverter needs to add an electrical isolation transformer at the output end of the inverter in the CIGS (solar thin film cell CuInxGa(1-x)Se2) thin film system application to effectively suppress the common mode leakage current of the thin film module power generation system and prevent PID (Potential Induced Degradation, Potential Induced Degradation) effect of glass-based thin film components. [0003] However, in the above-mentioned solar power generation...

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Problems solved by technology

[0003] However, in the above-mentioned solar power generation system, the electrical isolation transformer is bulky and has low conversion efficiency, which leads to high total cost of the solar power generation system

In addition, in the application, it is often encountered that due to the instantaneous impact of the start-stop current of the equipment, the over-current protection device of the electrical isolation transformer switch cabinet is frequently triggered, which increases the number of false alarms and unnecessary maintenance work, and affects the user experience.

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