Motor control system to be applied to electric vehicle, and electric vehicle

A motor control system to be applied to an electric vehicle includes a battery, a motor including a rotor and a stator, two inverter circuits, one or more processors, and a cooling water circuit including a cooling water pump. The motor control system includes motors each being the motor and pairs of two inverter circuits each being the two inverter circuits. The stator of each of the motors is coupled to the two inverter circuits of a corresponding one of the pairs of two inverter circuits. The one or more processors drive the cooling water pump to circulate cooling water, and drive each of the two inverter circuits to apply oppositely directed rotational torques to the rotor, to warm up the battery. While warming up the battery, the one or more processors switch, at predetermined timing, which of the motors to allow to generate heat.