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.
This paper aims to fabricate multiple-winding transformers for polyphase supply that means more than the classical three-phase supply. Usually, transformers do not change the phase, that is, from single phase to three phase or vice versa, but according to the required power applications, transformer windings are connected in such a way to get the desired phase supply. Transformers are connected to implement three or more phases, which are generally referred as polyphase or multiphase transformers. In order to obtain three-phase transformers from one single unit with respect to the required phase supply of the transformer for the same kVA rating, the circuit becomes less expensive, smaller, and much lighter than when it is obtained from three single-phase individual transformers. In this work, the proposed multiphase supply is preferred as five, obtained from three individual transformers instead of five single-phase transformers. By properly connecting the secondary windings of the three multiwinding single-phase transformers, the required power output is obtained. Different multiple-winding transformer topologies are discussed and elaborated through both simulation and experimental analysis with the fabricated proposed five-phase multiple-winding transformer.
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