研究目的
Investigating the reduction of common mode voltage (CMV) in single-phase quasi-Z-source inverter (qZSI) based photovoltaic (PV) power systems to enhance safety and efficiency.
研究成果
The proposed modified modulation method effectively reduces the CMV amplitude by half and nearly three quarters decrease of leakage current in single-phase APF integrated qZSI PV systems, without loss of efficiency.
研究不足
The study focuses on single-phase qZSI systems and may not directly apply to three-phase systems without further research.
1：Experimental Design and Method Selection:
The study proposes a modified modulation method for the APF integrated single-phase qZSI to reduce CMV amplitude.
2：Sample Selection and Data Sources:
Simulation and experimental results are compared for the single-phase qZSI under traditional SPWM and proposed method.
3：List of Experimental Equipment and Materials:
Includes TMS320F28335 digital signal processor (DSP) based controller board, Intelligent Power Module (IPM) PM50RLA120, and IT6514C PV simulator.
4：Experimental Procedures and Operational Workflow:
The proposed method revises the zero state ZS1 into ZS2 to reduce CMV amplitude.
5：Data Analysis Methods:
Power loss analysis is performed on commercialized 1200 V/50 A, full-SiC MOSFET Module CCS050M12CM2 and the Si IPM PM50RLA120.
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