A new soft-switched AC/DC PWM power converter structure is presented. It is useful for current-fed inverters and PWM rectifiers. Typical applications are magnet power supplies, high-power AC motor drives and active power filters with magnetic energy storage. Soft switching is provided at the expense of a limited increase of the circuit complexity as compared to usual hard switching solutions. A discussion of the soft commutation process is presented. By a proper switching sequence, overvoltages across the power converter switches can fully be eliminated. Moreover, light-load operation can be achieved. Both typical limitations of soft-switched current-fed topologies are therefore overcome. Simulation and experimental results demonstrate the actual power converter capabilities.

Performance Improvement of Soft-Switched PWM Rectifiers with Inductive Load

ROSSETTO, LEOPOLDO;TENTI, PAOLO;
1994

Abstract

A new soft-switched AC/DC PWM power converter structure is presented. It is useful for current-fed inverters and PWM rectifiers. Typical applications are magnet power supplies, high-power AC motor drives and active power filters with magnetic energy storage. Soft switching is provided at the expense of a limited increase of the circuit complexity as compared to usual hard switching solutions. A discussion of the soft commutation process is presented. By a proper switching sequence, overvoltages across the power converter switches can fully be eliminated. Moreover, light-load operation can be achieved. Both typical limitations of soft-switched current-fed topologies are therefore overcome. Simulation and experimental results demonstrate the actual power converter capabilities.
1994
Power Electronics Specialists Conference (PESC 94)
0780318595
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/171891
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 0
  • OpenAlex ND
social impact