针对飞机电蒸发冷却系统中永磁同步电机(PMSM)在不同工况下的抗负载扰动问题,研究了负载转矩前馈的方法,提出了一种基于降维负载转矩观测器的转矩前馈控制难点。针对降维负载转矩观测器提出工程化设计方法,通过将观测到的负载转矩补偿到电机电流环输入,实现电机对负载扰动的快速响应,提高了抗负载扰动能力。仿真和试验结果验证了降维负载转矩观测器设计方法以及PMSM负载转矩前馈控制算法的正确性和有效性。

To improve the antiload disturbance ability of permanent magnet synchronous motor (PMSM) for aircraft electric evaporation cooling system under different operation conditions, the load torque feedforward compensation control strategy was studied. A control method based on reducedorder load torque observer was presented. Engineering design method was introduced for the reducedorder load torque observer. The observed load torque was used for compensation of the motor current loop controller to realize quick response to load disturbance and improve disturbance resisting ability. Simulation and experiment results verified the correctness and effectiveness of the reducedorder load torque observer′s design method and the feedforward compensation strategy of PMSM.

TM 351