The LC-PWM-SF-RDC cell in the application of DC-DC converters and DC-link inverters

Author

de Freitas, L.C. ; Hey, H.L. ; Vieira, J.B., Jr. ; Coelho, E.A.A. ; Farias, V.J. ; Da Cruz, D.F.

Author_Institution

Univ. Federal de Uberlandia, Brazil

fYear

1992

Firstpage

330

Lastpage

336

Abstract

The use of the lossless commutation pulse width modulation (PWM) source feeding resonant disconnecting circuit (LC-PWM-SF-RDC) cell in the DC link and DC-DC power converter topologies is proposed. The most important property of this cell in DC-DC applications is the ability to regulate output power and voltage by PWM, with constant operating frequency, and without sacrificing the lossless commutation. In the case of a DC link application the use of the LC-PWM-SF-RDC cell allows the inverter legs to be switched in low frequency, while the resonant DC link circuit is switched in high frequency by using conventional PWM strategies for DC-DC power converters. Operation principles, output characteristics, relevant equations, simulation and experimental results are presented for use of this cell in a buck DC-DC power converter. The simulation results for a DC link inverter are presented

Keywords

commutation; invertors; power control; power convertors; pulse width modulation; switching circuits; voltage control; DC link; HF; LF; PWM; buck DC-DC power converter; inverters; lossless commutation; power control; resonant disconnecting circuit; switching circuits; voltage control; Circuit simulation; DC-DC power converters; Frequency conversion; Pulse circuits; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; RLC circuits; Resonance; Switching circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1992. INTELEC '92., 14th International

Conference_Location

Washington, DC

Print_ISBN

0-7803-0779-8

Type

conf

DOI

10.1109/INTLEC.1992.268423

Filename

268423