考虑转子异步损耗的永磁同步电机高效率控制研究

永磁同步电机（Permanent Magnet Synchronous Motor）功率密度高、转动惯量小、动态响应快，广泛用于电动汽车的驱动、伺服系统和工业等场合。考虑了电机在加速、减速等动态工况工作时产生的转子异步损耗，实现永磁同步电机损耗最小控制，建立了考虑转子异步损耗的永磁同步电机模型，采用数值方法求解电机模型；以电机输入功率最小为目标函数，通过基于模型的黄金分割算法在线搜索当前工况下的最优定子磁链，避免搜索过程中电机的抖动。结果表明，与传统的最大转矩电流比和弱磁控制相比，在加速、减速时总损耗都有明显降低，在额定转速以上响应更快，转矩动荡小。所提出的控制策略实现了动态工况下电机损耗最小，达到了节能的目的。

Research on Permanent Magnet Synchronous Motor Control Considering Rotor Asynchronous Loss

Permanent magnet synchronous motors(PMSM) have high power density, small moment of inertia, and fast dynamic response. They are widely used in electric vehicle drives, servo systems, and industrial applications. Taking into account the rotor asynchronous loss when the motor is working in dynamic conditions such as acceleration and deceleration, the minimum loss control of the permanent magnet synchronous motor is realized, Apermanent magnet synchronous motor model considering rotor asynchronous loss is established, and the motor model is solved by numerical methods. Taking the minimum motor input power as the objective function, online search for the optimal stator flux linkage under current operating conditions through the model-based golden section algorithm to avoid motor jitter during the search process. The results show that, compared with the traditional maximum torque current ratio and field weakening control, the total loss during acceleration and deceleration is significantly reduced, the response is faster above the rated speed, and the torque turbulence is small. The proposed control strategy achieves the smallest motor loss under dynamic conditions and achieves the goal of energy saving.