Comparative analysis of quasi Z-source inverter and active bidirectional converter for hybrid electric vehicle application

Due to the focus on clean and green environment, the interest on electrification of existing transportation system is increasing. In Hybrid Electric Vehicle (HEV), the "idle-stop" and hence fuel economy is achieved by using integrated starter generator (ISG). This paper discusses the comparative evaluation of active bidirectional converter based ISG and passive quasi-Z source inverter (qZSI) based ISG. The comparison is based on the principle of operation, ease of control, device stress and the efficiency. Simulation based on MATLAB/SIMULINK platform is carried out. The simulation results of induction motor based ISG driven by bi-directional converter and qZSI are presented.