Soft switching space vector PWM inverter using a new quasi-parallel resonant DC link

• Published in: IEEE transactions on power electronics Vol. 11; no. 3; pp. 503 - 511
• Main Authors: Jung, Y.c., Liu, H.L., Cho, G.C., Cho, G.H.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-05-1996; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Capacitors; Diodes; Electrical engineering; Electrical engineering. Electrical power engineering; Electronics; Exact sciences and technology; Inductors; Power electronics, power supplies; Pulse width modulation inverters; Resonance; Resonant inverters; Space vector pulse width modulation; Stress; Switches; Switching; Voltage; Waveform; Harmonic; Inverter; Circuit design; Direct current convertor; Static convertor; Resonant structure; Voltage control; Optimization; Parallel resonance; Operation study; Experimental result; Switching conditions; Vector control; Pulse duration modulation; Comparative study; Electrical characteristic
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/63.491645

A soft switching quasi-parallel resonant DC-link (QPRDCL) inverter with improved PWM capability has been recently presented. The circuit has the minimum voltage stress of the devices and provides the flexibility of selecting the on/off instants of the resonant link, resulting in improved PWM capability. In this paper, the operational principles and the detailed analysis of the QPRDCL inverter are presented for the resonant components design and the inverter control. An SVPWM with optimal vector sequence suitable for the QPRDCL inverter is also presented through the comparisons among five different modified space vector PWM (SVPWM) techniques classified by the voltage vector sequences. The performance of the selected optimal SVPWM is verified by the experimental results.