Control and simulation of an electric vehicle's traction chain based on interior permanent magnet synchronous motor IPMS

Abstract

In this work, the concepts of electric vehicles EVs and their traction system is introduced. First by looking to their history, types and different motors used for EVs. Then to go deeply in EV's powertrain, a system main component's modelling (motor, inverter, battery) must be done, where the IPMSM which is the most used motor in EVs applications was chosen. For the inverter , pulse width modulation PWM was first modelled and simulated then because of harmonics problems it was replaced by SVPWM. In a complete agreement the Lithium-ion batteries are the EVs most used battery and this because of their small size, besides many other advantages. Now the next step is to control the modelled traction system for this purpose Indirect Field Oriented control IFOC method was used and since in every control technique there is always a primary control objective combined with a secondary combine objective, the main purpose was to control the angular speed of the motor, then the second objective set is to regulate the flow of current hence, MTPA was integrated to the control system. In order to implement a more robust , nonlinear and chattering free control method , IFOC was replace by a Super Twisting Sliding Mode Control STSMC . As a final improvement to the system a DC-DC converter was added