An Ultra-high Gain Current-fed Universal Auxiliary Power Module for 400V/800V Electric Vehicles
2023 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, APEC(2023)
摘要
As the counterparts of alternators, the auxiliary power modules (APM) in electric vehicles (EVs) play an irreplaceable role in bridging the high-voltage (HV) propulsion system and low-voltage (LV) auxiliary system. With the increasing demands on fast charging, the HV propulsion system is seeing an involution from 400 V system to 800 V system. To adapt to the trends, the APM also faces the challenge of accepting a wider input voltage range, particularly in EVs with a reconfigurable battery pack. This paper proposed a reconfigurable current-fed dual active bridges (CFDAB) based converter which accepts an ultra-wide-range input from 180V to 900V and an output from 6V to 16V to cover both 400 V and 800 V systems. Topology, operation principles, and simple control to minimize the switching loss are discussed in the paper. A >3 kW prototype with a peak efficiency of 97% was built and tested, which successfully validated the proposed topology and control.
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关键词
Auxiliary power module,dc-dc converter,electric vehicles,current-fed converter,reconfigurable batteries
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