方波工况下PMSM单电流调节器控制策略的研究

轨道交通领域中的永磁同步电机PMSM(permanent magnet synchronous motor)在高速区通常运行在方波工况,电机电压幅值达到最大值时失去调节能力,仅有电压矢量角可供调节,导致传统的基于双电流环的控制策略失效.通过对方波工况下转矩与电压相角、d轴和q轴电压以及电流与电压相角、d轴和q轴电压关系...

Research on Control Strategy for PMSM with Single-current Regulator under the Condition of Square Wave

In the high-speed area, permanent magnet synchronous motors (PMSM) used in the rail transit field usually operated in square wave conditions. At this time, the voltage amplitude of the motor reached the maximum value and the adjustment ability was lost, only the voltage vector angle could be adjusted, which led to the failure of the traditional control strategy based on dual current loops. This paper derived the relationship between torque and voltage phase angle, d-axis and q-axis voltage, current and voltage phase angle, d-axis and q-axis voltage under square wave conditions, and knew that there were six different single current loop control strategies, and the single current loop control strategy currently used in square wave operating conditions all belonged to one of these six control strategies. By establishing a small signal model, the steady-state performance and dynamic performance of these six control strategies were analyzed and compared. Finally, simulation and experimental research verified the correctness of the theoretical analysis.