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The rapid increase of hybrid-electric vehicles (HEV) and electric vehicles (EV) has accelerated the innovation and improvement in various eco-systems used in those vehicles. Nowadays people are thinking to adopt the HEV/EV with consideration of running at a low cost compared to existing vehicles as well as nearer to Zero Emission. However, there are a lot of questions while using HEV/EV like range, cost, maintenance, charging infrastructure, and many more. This led OEM to improve efficiency in electric motor control, power conversion battery management system, and continuous improvement required on regular basis.