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http://dx.doi.org/10.6113/TKPE.2016.21.2.95

High Power Density 50kW Bi-directional Converter for Hybrid Electric Vehicle HDC  

Yang, Jung-Woo (Electronic Engineering, Kookmin University)
Keum, Moon-Hwan (Electronic Engineering, Kookmin University)
Choi, Yoon (Electronic Engineering, Kookmin University)
Han, Sang-Kyoo (Electronic Engineering, Kookmin University)
Kim, Seok-Joon (Hyundai Motor Group)
Kim, Sam-Gyun (Hyundai Motor Group)
Kim, Jong-Pil (Hyundai Motor Group)
Sakong, Suk-Chin (Electronic Engineering, Kookmin University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.21, no.2, 2016 , pp. 95-101 More about this Journal
Abstract
This paper proposed a high-power density bidirectional converter for hybrid electric vehicle high-voltage DC-DC converter(HDC). The conventional HDC has two disadvantages. First, large inductance is required to satisfy the ripple current of inductor by low switching frequency (<20 kHz). Second, large core size is required to prevent the saturation of inductor by high current. Compared with the conventional HDC, the proposed HDC can reduce inductance with SiC-FET for high frequency driving. High-power density of I/O capacitors can be achieved through two-phase interleaved method. The high-power density of inductors can be achieved because the offset current of magnetizing inductance is theoretically terminated by using the differential mode coupled inductor instead of using two single inductors. The validity of the proposed converter is proved through the 50 kW prototype.
Keywords
Non-isolated; Bi-directional; HDC(High voltage DC-DC Converter); Interleaved; High power density; DM(Differential Mode) coupled inductor;
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