Three-phase step-down reversible AC-DC power converter

Author

Rahim, N.A. ; Green, T.C. ; Williams, B.W.

Author_Institution

Malaya Univ., Kuala Lumpur, Malaysia

Volume

2

fYear

1995

fDate

18-22 Jun 1995

Firstpage

973

Abstract

Bidirectional DC current flow is not a natural feature of the buck (step-down) switch-mode rectifier which leaves it at a disadvantage to boost (step-up) designs. A circuit topology is presented that allows bidirectional flow and which, by dual use of components, uses less devices than anti-parallel bridges. Sinusoidal current, controlled displacement factor and variable voltage transfer ratio are demonstrated in a 1.5 kVA prototype. Dynamic performance is investigated through simulation and experiment. A PI plus velocity controller is shown to be adequate provided care is taken over changing between rectification and inversion

Keywords

AC-DC power convertors; PWM power convertors; rectifying circuits; two-term control; velocity control; voltage control; 1.5 kVA; PI plus velocity controller; bidirectional DC current flow; circuit topology; control system design; controlled displacement factor; dynamic performance; inversion; pulse width modulator; rectification; sinusoidal current; step-down reversible AC-DC power converter; three-phase; variable voltage transfer ratio; AC-DC power converters; Bridge circuits; Buck converters; Diodes; Educational institutions; IEC standards; Pulse modulation; Rectifiers; Switches; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1995. PESC '95 Record., 26th Annual IEEE

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-2730-6

Type

conf

DOI

10.1109/PESC.1995.474933

Filename

474933