METHOD FOR CONTROLLING HEATING OF MOTOR AND CONTROL METHOD FOR MULTI-MOTOR DRIVE SYSTEM

A method for controlling heating of a motor includes: obtaining a heating target temperature value; determining, based on the heating target temperature value, a heating motor that needs to generate heat from a plurality of motors of a multi-motor drive system and heat generation power of the heating motor; and sending a first control instruction to the heating motor. The first control instruction is used to respectively input harmonic currents to three phases of windings of the motor, the harmonic currents in the three phases of windings have a same time phase, the harmonic currents in the three phases of windings add up to zero, and harmonic currents of two of the three phases of windings are equal, so that the heating motor generates heat based on the heat generation power. In this way, after the heating target temperature value is obtained, a suitable quantity of heating motors can be selected in the plurality of motors to generate heat, and the heat generation power of the heating motor can be determined based on heating power required by a to-be-heated object. Therefore, the quantity of heating motors can be flexibly controlled to generate sufficient heat generation power.