Analysis and implementation of a single-phase multilevel inverter for power quality improvement
Industrial Electronics, 2002. ISIE 2002. Proceedings of the 2002 IEEE International Symposium （2002）
摘要
A single-phase multilevel inverter with.-the function of power factor corrector and active power filter is proposed to reduce harmonic currents flowing into the power system and to draw a nearly sinusoidal line current with unity power factor. The circuit topology of the proposed inverter is based on a conventional full-bridge inverter with one AC power switch. The switching signals of the power switches are derived from the voltage balance compensator, current controller and detected operation region of mains voltage. A three-level PWM voltage pattern on the AC side of the inverter in each half cycle of mains frequency is performed. Simulation results are implemented to verify the validity and effectiveness of the proposed inverter with the function of power factor corrector and active power filter.
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关键词
dc-ac power convertors,pwm invertors,active filters,bridge circuits,harmonic distortion,power conversion harmonics,power factor correction,power harmonic filters,power supply quality,ac power switch,active power filter,harmonic currents reduction,power quality improvement,simulation results,single-phase multilevel inverter,switching signals,unity power factor,voltage balance compensator,power system,power factor
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