Snubber-Assisted Zero-Voltage and Zero-Current Transition Bilateral Buck and Boost Chopper for EV Drive Application and Test Evaluation at 25 kW
Tsuruta, Y.
Ito, Y.
Kawamura, A.
Yokohama Nat. Univ., Yokohama;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Jan. 2009
Volume: 56,
Issue: 1
On page(s): 4-11
ISSN: 0278-0046
INSPEC Accession Number: 10370830
Digital Object Identifier: 10.1109/TIE.2008.2008757
First Published: 2008-11-18
Current Version Published: 2008-12-30
Abstract
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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