The invention discloses a
copper consumption minimization-based axial
magnetic field flux-switching fault-tolerant motor fault-tolerant control method. With the
copper consumption minimization-based axial
magnetic field flux-switching fault-tolerant motor fault-tolerant control method of the invention adopted, an axial
magnetic field flux-switching fault-tolerant motor can operate under a fault-tolerant state when a single-phase open-circuit fault occurs on the axial magnetic field flux-switching fault-tolerant motor, and the
copper consumption of the motor can be minimized. An
inverter adopts a three-phase four-bridge alarm fault-tolerant topology and judges a fault state according to phase current; when operation is normal, the
inverter operates under a three-phase three-bridge arm mode, an axial magnetic field flux-switching fault-tolerant
motor control system adopts an SVPWM (
Space Vector Pulse Width Modulation) control strategy according to which id=0, so as to distribute d-axis current and q-axis current; and when a single-phase fault occurs, fault-tolerant control is performed, the
inverter operates under a two-phase three-bridge arm mode, and magnetizes the motor through controlling the current of a fault-tolerant winding, so that the overall copper consumption of the motor can be minimized. According to the copper consumption minimization-based axial magnetic field flux-switching fault-tolerant motor fault-tolerant control method of the invention, under the single-phase open-circuit condition, and with minimizing the copper consumption adopted as an optimization objective, the motor is switched from a fault state to a fault-tolerant control state, and therefore, the reliability of a motor driving
system and the operation efficiency of the motor under the fault-tolerant state can be effectively improved.