Motor protection system and method

The present invention is a system and method for motor fault protection. Discloses a motor drive system that includes a power source, a driving circuit, a motor, a controller and a protection circuit. A driving circuit connected to the power supply, the driving circuit comprising at least one switching device. And the motor drive circuit is connected to a motor includes a plurality of motor windings, the motor drive circuit can be driven. The controller in the normal mode, a driving circuit for the at least one switch to provide a first switching signal. The protection circuit connected to the controller, when a failure mode, the protection circuit to generate a second switch signal based on the fault signal and providing a second switching signal to the switching device at least one driving circuit, and a circuit for driving the plurality of motor windings Reconstruction circuit loop between. The present invention also discloses a motor driving method. Motor drive system and a motor driving method disclosed in the present invention, reconfigurable circuit loop between the drive circuit and the motor, thus reducing the counter electromotive force of the motor.