电动汽车用感应电机最小损耗Hamilton控制

Loss-minimization Hamilton control of induction motor for electric vehicles

针对电动汽车电驱动系统的非线性特点,采用端口受控Hamilton系统理论研究了考虑铁损的电动汽车用感应电动机系统的最小损耗控制问题。首先,根据基于损耗模型的感应电机能量优化控制策略得到系统稳态时的优化结果,然后在这一稳态目标下,利用系统的互联和阻尼配置以及能量成形对考虑铁损的感应电机进行Hamilton控制,最后通过仿真实验,验证了在相同的稳态目标下,采用本文的控制算法可使得电机能量损耗明显降低,同时本文采用的控制策略与基于矢量控制的优化控制策略相比,具有收敛速度快、转速波动小等优点,为高性能要求的电动汽车电驱动系统高效运行提供了新的途径。

In view of the nonlinear characteristic of the electric vehicle drive system, a port-controlled Hamilton loss-minimization control scheme for electric vehicle induction motor drives is presented in this paper. First, the steady-state system results are obtained according to the energy optimization control strategy of induction motor driving system based on the loss model. Then, under this steady-state goal, it applied the method of interconnection and damping assignment to design the Hamilton controller for the induction motor considering iron losses. Finally, the simulation results validate that in the same steadystate goal, the induction motor loss decreases significantly under this control strategy, and compared to the energy optimization strategy based on vector control, the strategy provided in this paper has advantages of high optimization speed and small speed fluctuation, which provide a new method for a good performance and high efficiency induction motor drive system for electric vehicles.