摘要
基于混合动力汽车应用中的电机控制,本文分析了电机运行的最大转矩/电流MTPA、弱磁控制和最大输出功率等阶段的数学模型,提出了基于新型内嵌式永磁同步电机IPM的一种最优化定子电流控制算法,调节不同阶段给定定子电流的交直轴分量,充分利用变流器所能提供的电压和电流容量,以维持系统运行所需要的转矩输出,使得每个时刻电机都能充分利用变流器资源并输出最大功率,可靠性和动态性能都很理想,实现了能量最优化,仿真实验和实际平台实验验证了该方法的可行性和优越性。
Based on the motor control applications of Hybrid electric vehicle,this paper analyzes the motor＇s mathematical model of the various stages of motoring;the stages include the MTPA,weakening control and maximum output power stage.A control algorithm was proposed to optimize the stator current.Through the algorithm,the d-axis and q-axis component of stator current were given to produce the desired torque and to maintain system stability under the voltage limit and current limit.The system takes full advantage of the capacity of the convertor,and the maximum output torque was generated by the motor anytime.The reliability and dynamic performance of system were good.Energy optimization was achieved.The results from Simulation and the real platform experiment verify the feasibility and advantages of the system.
