Common-mode voltage suppression PWM strategy with minimum switching loss

The invention discloses a common-mode voltage suppression PWM strategy with minimum switching loss. The common-mode voltage suppression PWM strategy is implemented by generating driving signals Sa, Sb and Sc of a three-phase two-level frequency converter by using a PWM modulator on a three-phase vol...

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Bibliographische Detailangaben
Hauptverfasser:	JI BISHENG, LIANG GUANGYAO, XU JUNZHONG, LIU GUANGCAI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The invention discloses a common-mode voltage suppression PWM strategy with minimum switching loss. The common-mode voltage suppression PWM strategy is implemented by generating driving signals Sa, Sb and Sc of a three-phase two-level frequency converter by using a PWM modulator on a three-phase voltage source inverter. According to the common-mode voltage suppression PWM strategy, the minimum switching loss is achieved within the full power factor range, the system efficiency is improved, and the common-mode voltage can be effectively suppressed. 本发明公开了具备最小开关损耗的共模电压抑制PWM策略，包括在三相电压源逆变器上使用PWM调制器，生成三相两电平变频器的驱动信号Sa,Sb和Sc。本发明的共模电压抑制PWM策略，在全功率因数范围内实现最小开关损耗，提高了系统效率，能够有效地抑制共模电压。