A Torque-Compensated Fault-Tolerant Control Method for Electric Vehicle Traction Motor with Short-Circuit Fault

The development of traditional vehicles which consume fossil carbon-based fuels is constrained by environmental pollution and the energy crisis, it has become a social consensus to develop electric with new resources low emissions. drive system should be able reliably operate over long period. When short-circuit fault occurs in driving motor, current winding will increase sharply threaten safety. This paper proposed fault-tolerant control strategy for dual three-phase permanent magnet synchronous traction motor (DT-PMSTM) can resolve problem faults. non-short-circuit windings been reconstructed offset interference output stable torque. Based on principle constant composited magnetic motive force (MMF), dimension-reduced orthogonal transformation matrix was derived. compensation currents were designed according effect normal MMF motor. Consequently, lost torque component caused lack compensated, pulsation also reduced. performance topologies neutral point-isolated mode point-connected both investigated compared. validity proved simulation results.