An Interleaved Converter with Closed Loop Flux Observer-based Syn-RL Motor Drive for Electric Vehicles

This paper presents the closed-loop flux observer (CLFO) for position and speed estimation and control of synchronous reluctance (Syn-RL) motor drive for electric propulsion-based vehicles. In comparison to conventional open loop observer, the presented closed loop observer reduces the non-linearity such as DC drift, saturation, delay and attenuation present in the speed estimation for the EV system. The prime source of energy is the battery, which is integrated with bidirectional DC-DC converter. In this paper interleaved parallel bi-directional DC-DC (IPBDC) converter is presented. The improved performance of the presented system is also highlighted in this paper with an emphasis on battery performance with solar PV integration. Performance of the CLFO-based Syn-RL motor drive is observed and authenticated in MATLAB/Simulink.