Multi-PMSM Sensorless Cooperative Control Based on LADRC

For the Four-Wheel-Independent-Drive (4WID) Electric Vehicles (EV), the complex operating conditions lead to mechanical sensor failure, and the load frequent change affects the multi-motor synchronization performance. To solve this EV operation safety problem, this paper proposes a sensorless cooperative control strategy for multi-permanent magnet synchronous motors based on Active Disturbance Rejection Control (ADRC). An improved relative coupling control is used to simplify the computational structure of traditional relative coupling control. Finally, the effectiveness of the proposed strategy is verified.