感应电机预测功率控制器设计与调优策略

Design and Tuning Strategy of Predictive Power Controller for Induction Motor

近年来,中国正持续大规模发展交通产业多领域的电气化,由此对驱动装备提出了更高的要求。为适配新型运载工具的新需求,应用先进控制策略是一个重要方面。与其他控制策略相比,预测功率控制不需要代价函数权系数和检测转子位置角,是一种潜力突出的感应电机控制策略。为了便于感应电机预测功率控制策略的推广与应用,提出一种预测功率控制调优策略。该策略首先建立了电机转速环和磁链环控制模型,然后推导出相应的离散域传递函数,在此基础之上,给出基于采样频率、期望带宽和电机参数的PI控制参数设计方法。最后的仿真结果证明,预测功率控制不需要权系数便可实现良好的控制效果,同时,所提参数设计方法可以有效简化参数设计步骤,降低了系统设计的复杂度。

In recent years,China is continuing to develop large-scale electrification in many fields of transportation industry,which puts forward higher requirements for driving equipment.In order to meet the new requirements of new vehicle,applying advanced control strategy is an important aspect.Compared to other control strategies,predictive power control is a potential control strategy for induction motor without cost function weight coefficient and rotor position angle detection.In order to facilitate the promotion and application of predictive power control strategy for induction motor,a predictive power control tuning strategy is proposed.In this strategy,the motor speed loop and magnetic chain loop control models are established first,and then the corresponding discrete domain transfer function is derived.On this basis,the PI control parameter design method based on sampling frequency,expected bandwidth and motor parameters is given.The final simulation results show that predictive power control can achieve good control effect without weight coefficient,and the proposed parameter design method can effectively simplify parameter design steps and reduce the complexity of system design.