Analysis of z-source inverter fed asynchronous motor for electric vehicle applications

Abstract

ELECTRIC VEHICLES are first introduced in 19th century but at the beginning, performance of electric vehicles is very poor in efficiency, speed, cost, controlling the vehicle. During this period IC engines plays major active role in transportation and even if the electric vehicles are having the above-mentioned drawbacks, but extensively used in electric locomotives and various applications. There is a gradual incising the cost of petroleum products again the research looking back into electric vehicles. But the fast development of power electronics and the battery management system and the reduced size of battery push forward towards the progress of electric vehicles. Due to the drastic improvement in power electronics region the controlling of electric vehicles are become easy and the charging time also reduced drastically. In conventional Voltage and current source inverters, a voltage stress across the power switches is a biggest concern to improve the system efficiency. To limit the drawbacks of classical converters, in this work an impedance source inverter fed asynchronous motor is proposed. In turn control the electric vehicle operation both in accelerating and decelerating periods. The proposed inverter controlled various pulse width modulation control strategies and corresponding Total harmonic distortion analyzed. The DC link Voltage regulation, stator and rotor currents, torque and speed of the proposed asynchronous motor drive performance for the designed EV setup have been investigated through MAT LAB simulation.