电动汽车永磁同步电机滑模低速控制

发布时间：2018-04-30 17:13

本文选题：滑模变结构控制 + 永磁同步电机　；参考：《电机与控制应用》2017年10期

【摘要】：针对采用永磁同步电机i_d=0矢量控制调速的电动汽车电机驱动控制系统,为了改善其抗负载扰动能力,并且当电动汽车处于低速运行时,能够输出大转矩,将滑模变结构控制中的变指数趋近律进行改进,设计了一种滑模速度控制器。为了减小滑模变结构控制的抖振问题,引入饱和函数来代替符号函数,同时考虑到滑模速度控制器中存在滞后问题,将饱和函数与经过积分环节后得到的信号相乘,在提高了响应速度的同时增强系统的抗扰动能力。经过仿真验证,不同负载工况下,滑模速度控制器具有较强的鲁棒性和抗扰动能力,满足电动汽车低速运行工况下输出大转矩的要求。
[Abstract]:In order to improve the anti-load disturbance ability of the motor drive control system of electric vehicle using permanent magnet synchronous motor (PMSM) i_d=0 vector control speed regulation, and when the electric vehicle is running at low speed, it can output large torque. The variable exponential approach law in sliding mode variable structure control is improved and a sliding mode velocity controller is designed. In order to reduce the chattering problem of sliding mode variable structure control, the saturation function is introduced to replace the symbol function, and considering the delay problem in the sliding mode velocity controller, the saturation function is multiplied by the signal obtained after integral. The response speed is improved and the anti-disturbance ability of the system is enhanced. The simulation results show that the sliding mode speed controller has strong robustness and anti-disturbance ability under different load conditions, which can meet the requirements of large torque output under low speed operation conditions of electric vehicles.
【作者单位】：辽宁工业大学电气工程学院;北京航空航天大学流体传动与控制技术研发中心;
【基金】：国家自然基金项目(51275021) 辽宁省自然科学基金指导计划项目(201602370) 辽宁省教育厅科学研究一般项目(L2015229)
【分类号】：TM341;U469.72

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