A single-stage zero-voltage zero-current-switched full-bridge DC power supply with extended load power range

Author

Jain, Praveen K. ; Espinoza, José R. ; Ismail, Nasser A.

Author_Institution

Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada

Volume

46

Issue

2

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

261

Lastpage

270

Abstract

A single-stage power-factor-corrected pulsewidth modulation power converter with extended load power range is presented. The topology is based on a zero-voltage zero-current-switched full-bridge (ZVZCS-FB) inverter. Steady-state analysis of the topology shows that by operating the LC load filter in discontinuous mode, the DC-link voltage remains bounded and independent of the load level. Therefore, the load power range can be further expanded, including the no-load operating condition. The analysis also shows that the extension of the load power range is achieved without any penalty in: (1) the input power factor (due to the input current waveshaping feature); (2) the power converter efficiency (due to ZVZCS and the single-stage features); and (3) the load voltage quality (due to the high bandwidth of the phase control loop). Simulated and experimental results are included to show the feasibility of the proposed scheme

Keywords

bridge circuits; harmonic distortion; load (electric); power conversion harmonics; power factor correction; power supplies to apparatus; switching circuits; DC-link voltage; ZCS; ZVS; extended load power range; input power factor; load voltage quality; phase control loop bandwidth; power converter efficiency; single-stage full-bridge DC power supply; steady-state topology analysis; Bandwidth; Filters; Inverters; Phase control; Pulse modulation; Pulse width modulation converters; Reactive power; Steady-state; Topology; Voltage;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.753764

Filename

753764