A new soft-switched quasi-single-stage (QSS) bi-directional inverter/charger

Author

Wang, Kunrong ; Lee, Fred C. ; Dong, Wei

Author_Institution

Celestica Corp., Johnson City, NY, USA

Volume

3

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

2031

Abstract

A new soft-switched quasi single-stage (QSS) bidirectional inverter/charger topology is proposed in this paper. It realizes seamless four-quadrant operation in inverter mode, and rectifier operation with unity power factor in charger mode. Single stage power conversion, standard half-bridge connection of devices, soft-switching for all the power devices, low conduction loss, simple center-aligned PWM control, and high efficiency are among the salient features. The principles of circuit operation, PWM control and synthesis, and topological extension are discussed in this paper. The experimental results on a 3 kVA prototype (12 V DC to and from 110 V AC) are also presented

Keywords

PWM invertors; battery chargers; bridge circuits; power factor; switching circuits; 110 V; 12 V; 3 kVA; bi-directional inverter/charger; center-aligned PWM control; half-bridge connection; high efficiency; inverter mode; low conduction loss; quasi-single-stage bi-directional inverter/charger; rectifier operation; seamless four-quadrant operation; single stage power conversion; soft-switched bi-directional inverter/charger; soft-switching; unity power factor; Batteries; Bidirectional control; Circuit topology; Hafnium; Pulse width modulation; Pulse width modulation inverters; Reactive power; Switches; Uninterruptible power systems; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE

ISSN

0197-2618

Print_ISBN

0-7803-5589-X

Type

conf

DOI

10.1109/IAS.1999.806016

Filename

806016