• Home|About JOPS|Editorial Board|Contact us|Chinese
CHEN Yenan,XU Dehong.Principle of Soft-switching Single-phase Grid-connected PV Inverter and Grid-connected Test[J].JOURNAL OF POWER SUPPLY,2018,16(5):31-37
Principle of Soft-switching Single-phase Grid-connected PV Inverter and Grid-connected Test
Received:July 18, 2017  Revised:April 11, 2018
View Full Text  View/Add Comment  Download reader
DOI:10.13234/j.issn.2095-2805.2018.5.31
Keywords:photovoltaic  soft switching  inverter
Fund Project:The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)
     
AuthorInstitutionEmail
CHEN Yenan College of Electrical Engineering, Zhejiang University, Hangzhou , China
XU Dehong College of Electrical Engineering, Zhejiang University, Hangzhou , China xdh@zju.edu.cn
Hits: 85
Download times: 91
Abstract:
      To optimize the efficiency and improve the power density, a soft-switching single-phase grid-connected photovoltaic(PV) inverter based on MOSFET and its zero-voltage switching sinusoidal pulse width modulation(ZVS SPWM) method were proposed. The operation principle of the soft-switching single-phase grid-connected converter was introduced. Using the zero-voltage modulation method, the auxiliary resonant circuit was controlled, thus realizing the zero-voltage switching of MOSFET and the suppression of reverse recovery of its body-diode. The switching frequency of the inverter was 100 kHz, thus the grid-connected filter inductance was reduced. A 30 kW grid-connected PV generation system was built, and a PV generation test was conducted on ten 3 kW soft-switching single-phase grid-connected PV inverters, which verified the theoretical analysis and the reliability of the generation system.
Close