Motor active heating control method and system for vehicle and vehicle

The invention discloses a motor active heating control method and system for a vehicle and the vehicle, and relates to the technical field of vehicles. The motor active heating control method for thevehicle comprises the steps of judging whether the vehicle has a heat demand or not; detecting the running state of the vehicle; if the vehicle has a heat demand and is in a static state, controllingthe direct-axis current of the motor to be direct current, and meanwhile, controlling the quadrature-axis current of the motor to be zero, wherein when the direct-axis current of the motor is direct current and the quadrature-axis current of the motor is zero, a constant magnetic field parallel to the rotor magnetic field of the motor is formed in the motor, and the motor has no torque output. Theinvention further provides a corresponding control system. Meanwhile, the invention further provides a vehicle which adopts the control method to control heating of the motor or comprises the controlsystem. When the whole vehi