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http://dx.doi.org/10.6113/TKPE.2022.27.1.74

Development of Bi-directional Charger With a Wide Voltage Range  

Na, Jaeho (Dept. of Electrical Engineering, HYPEC-EPECS Lab., Hanyang University)
Park, Jun-Sung (Electric Powertrain R&D Censter, KATECH)
Jeon, Yujong (Electric Powertrain R&D Censter, KATECH)
Shin, Wae-Gyeong (Electric Powertrain R&D Censter, KATECH)
Lee, Chungyoul (SIGNET EV Inc.)
Kim, Rae-Young (Dept. of Electrical Bio-Engineering, Hanyang University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.27, no.1, 2022 , pp. 74-79 More about this Journal
Abstract
This paper proposes a DC-DC converter that satisfies a wide output voltage of 150 V-1000 V for the battery voltage of various electric vehicles and can be controlled in both directions for the demand resource of electric vehicles. The proposed converter is a two-stage structure in which an insulated converter and a non-isolated converter are combined and operates as constant current or constant power depending on the voltage of the connected battery. Experimental results from a 20 kW prototype are provided to validate the proposed charger, and a maximum efficiency of 97% is obtained.
Keywords
EV (Electric Vehicle); Fast-charger; V2G (Vehicle to Grid); Two-stage DC-DC converter;
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