Journal of Electrical Engineering : Volume 17 / 2017 - Edition : 4

DESIGN AND CONTROL OF BIDIRECTIONAL SOFT SWITCHING DC-DC CONVERTER FOR HEV APPLICATIONS

Authors:
RAMYA K C
Jegathesan
Domain:
building electrification
Abstract:
For hybrid electric vehicle (HEV) applications, there is a need to transfer energy between battery and motor drive. Hence a bidirectional converter is required to control power flow in both motoring and regenerative braking operation so that the efficiency of the system increases. Due to compact size and weight of the bidirectional DC-DC converter (BDC), the interest is focused to transformer-less BDC. This work proposes a high efficient BDC to achieve high efficiency with reduced switching losses. The proposed converter is based on a bidirectional half-bridge type buckboost topology along with a resonant inductor, two resonant capacitors and two parallel capacitors forms a closed loop converter for motor drive system. The proposed converter has no additional switch for soft switching of the main switch. Thus, the designed system is verified, simulated using MATLAB Simulink and the performance of the various control approaches including PI; Fuzzy and Neural control for converter is analyzed in terms of rise time and settling time. The simulation results are therefore verified with the experimental results.
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