Two-switch auxiliary quasi-resonant DC link snubber-assisted voltage source three-phase V-connection soft-switching sinewave inverter with bidirectional soft-switching chopper for solar PV power conditioner

• Published in: 30th Annual Conference of IEEE Industrial Electronics Society, 2004. IECON 2004 Vol. 3; pp. 3106 - 3110 Vol. 3
• Main Authors: Ahmed, T., Nagai, S., Nakaoka, M., Hyun Woo Lee
• Format: Conference Proceeding
• Language: English
• Published: Piscataway NJ IEEE 2004
• Subjects: Applied sciences; Capacitors; Choppers; Circuit properties; Connection and protection apparatus; Direct current networks; Electric, optical and optoelectronic circuits; Electrical engineering. Electrical power engineering; Electrical power engineering; Electronic circuits; Electronics; Exact sciences and technology; Photovoltaic systems; Power conversion; Power networks and lines; Proposals; Pulse width modulation; Pulse width modulation inverters; Resonant inverters; Solar power generation; Switching, multiplexing, switched capacity circuits; Users connections and in door installation; Voltage; Bidirectional link; Electric energy transportation; Power supply; Shock absorbers; Switching conditions; Parallel system; Power conditioning circuits; Alternating current; Pulse width; Soft switching; Current commutator; Direct current line; Photovoltaic system; Connection; Power electronics; Pulse modulation; Three phase current; Interactive system; PWM invertors; Snubber circuit; Electrical network; Three phase circuit; Electric power production; Pulse duration modulation; Chopper; Power transmission line
• ISBN: 9780780387300; 0780387309
• DOI: 10.1109/IECON.2004.1432308

This paper is concerned with a novel proposal of the utility AC interactive three-phase soft commutation sinewave PWM power conditioner developed for solar photovoltaic power generation system and parallel processing UPS with new type battery and super capacitor energy storage devices. The prototype of this power conditioner is composed of two quadrant soft switching PWM chopper with step-up and step-down voltage operating modes, three-phase V-connection soft switching PWM inverter incorporating a single two-switch auxiliary resonant DC link snubber into one phase of three-phase bridge legs with divided capacitors, and the three-phase utility AC power source grid. The operating principle of the proposed power conversion conditioning circuit and system including some unique features and based upon high-frequency soft switching sinewave PWM scheme is described and discussed. The operating performances; waveform quality and actual efficiency of cost effective utility interactive power conversion conditioning and processing circuit treated here are evaluated and discussed on the basis of experimental data.