Evaluation of power losses in power electronic converters for industrial applications: comparison among hard switching, ZVS and ZVS-ZCS converters

Author

Caponet, Marco Chiadò ; Profumo, Francesco ; Tenconi, Alberto

Author_Institution

Dipt. di Ingegneria Elettrica Ind., Politecnico di Torino, Italy

Volume

3

fYear

2002

fDate

2002

Firstpage

1073

Abstract

A comparison among hard switching (HS), zero voltage switching (ZVS) and zero voltage switching zero current switching (ZVS-ZCS) converters is proposed. For high voltage (400-800V), high power (from 5 to 50 kVA) applications, where IGBTs are predominantly used, the maximum operating switching frequency for hard switching IGBT converters is 20 kHz. To reduce the size of the passive components used in the power converter, such as inductors, capacitors and transformers and thus the power converter cost, the switching frequency must be increased. This purpose is against the efficiency of the converter, because the switching losses increase with the switching frequency. Power converters controlled by other techniques such as ZVS or ZVS-ZCS are able to operate up to 100 kHz in a power range up to a few tenth of kVA. For the analysis of the three power converters, a simplified simulation tool has been developed. A comparison, through simulation results, of these power converters for an industrial application of 30 kVA output power, with different load conditions has been carried out

Keywords

DC-DC power convertors; bipolar transistor switches; bridge circuits; insulated gate bipolar transistors; load (electric); losses; power bipolar transistors; power semiconductor switches; switching circuits; 100 kHz; 20 kHz; 30 kVA; 400 to 800 V; 5 to 50 kVA; IGBTs; ZVS power converters; ZVS-ZCS power converters; hard switching; load conditions; passive components reduction; power losses evaluation; simulation tool; static power converter; switching frequency; Capacitors; Costs; Inductors; Insulated gate bipolar transistors; Power electronics; Switching converters; Switching frequency; Transformers; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference, 2002. PCC-Osaka 2002. Proceedings of the

Conference_Location

Osaka

Print_ISBN

0-7803-7156-9

Type

conf

DOI

10.1109/PCC.2002.998121

Filename

998121