Analysis of fault characteristics after the breakdown of power switches in voltage-source PWM rectifiers

作者：Wang Lei^*; Zhao Leiting; Zhang Gang; Wu Zuomin; Liu Zhigang

来源：Transactions of China Electrotechnical Society, 2010, 25(7): 108-116.

• Double-loop control
• Fault characteristics
• Fault currents
• Fault diagnosis
• Output current
• Performance analysis
• Power devices
• Power switches
• PWM rectifier
• Voltage distortions
• Voltage-source PWM rectifier

This paper presents a deep research on the AC fault current and voltage distortion of voltage-source PWM rectifier after the breakdown fault of its power devices. The result from the research is also compared with that of conventional SVPWM inverter. Based on the conclusions derived from the performance analysis of PWM rectifier after the fault, this paper comes up with the affects from its double-loop control scheme on the current and voltage distortion, as well as from different DC output currents and AC inductance, together with their contribution to the distortion. Finally, the fault characteristics peculiar to large-capacity PWM rectifier is analyzed, and then a fault device localization approach for it is introduced.

• 出版日期2010
• 单位北京交通大学