An Improved Efficiency of Integrated Inverter / Converter for Dual Mode EV/HEV Application

The objective of this paper is to improve the efficiency of EV/HEV under heavy load conditions. The proposed integrated circuit allows the permanent magnet synchronous motor to operate in motor mode or acts as boost inductors of the boost converter and thereby boosting the output torque coupled to the same transmission system or dc-link voltage of the inverter connected to the output of the integrated circuit. In motor mode, the proposed integrated circuit acts as an inverter and it becomes a boost-type boost converter, while using the motor windings as the boost inductors to boost the converter output voltage. . The proposed control technique is to use interleaved control to significantly reduce the current ripple and thereby reducing the losses and thermal stress under heavy-load condition. The performance of the proposed circuit is available by using simulation of MATLAB/SIMULINK software