Journal
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 56, Issue 1, Pages 4-11Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2008.2008757
Keywords
DC-DC power conversion; insulated-gate bipolar transistor (IGBT)
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A new high-efficiency and high-power bilateral buck and boost chopper circuit for the electric-vehicle drive application is presented. The operation principle of snubber-assisted zero-voltage and zero-current transition (SAZZ) topology was applied, and a new SAZZ bilateral buck-boost chopper circuit (SAZZ-1) was created by combining two basic SAZZ circuit types. A 50-kHz 25-kW SAZZ-1 was fabricated and tested. An efficiency of 96.6% at 25 kW with boost mode (input: 250 V/output: 390 V) in forward direction and an efficiency of 97.4% at 25 kW with buck mode (input: 420 V/output: 300 V) in forward direction were obtained. The high potentiality of the SAZZ-1 chopper is demonstrated as we expected.
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