Double-channel permanent magnet synchronous motor control method considering power supply imbalance

The invention relates to a dual-channel permanent magnet synchronous motor control method considering power supply imbalance, and the method comprises the steps: collecting the information of a dual-channel permanent magnet synchronous motor system for closed-loop control; then, constructing a voltage vector considering dual power supplies according to a space vector synthesis principle, and obtaining an accurate synthesized voltage vector under power supply imbalance; secondly, a voltage vector plane is divided into 12 sectors, three large vectors and one medium vector acting in each sector are selected, and harmonic sub-plane current suppression is achieved; thirdly, introducing a proportionality coefficient of dual-supply voltage, and calculating effective voltage vector action time; and finally, performing duty ratio optimization through zero vector injection, and comparing the output modulation wave with the carrier wave to generate PWM (Pulse Width Modulation) to act on the dual-channel inverter. By mea