基于反推控制的机械弹性储能永磁同步电机最大转矩电流比控制

发布时间：2018-03-06 12:16

本文选题：永磁同步电机　切入点：最大转矩电流比控制　出处：《电工技术学报》2017年22期 　论文类型：期刊论文

【摘要】：与id=0控制相比,同等容量下最大转矩电流比控制可使永磁同步电机输出更大的低速转矩,动态性能也更优,适合于作为机械弹性储能系统驱动控制。提出一种基于反推控制的永磁同步电机最大转矩电流比控制方法,运用极值原理建立最大转矩电流比控制下最小d、q轴电流关系式,利用带遗忘因子的最小二乘算法辨识同时变化的涡簧负载转矩和转动惯量,在此基础上,设计速度反推控制器和电流反推控制器分别取代传统速度PI控制器和电流PI控制器,并从理论上证明了控制算法的稳定性。实验结果表明,最大转矩下该方法比基于反推的id=0控制需要的定子电流更小,而与基于PI的最大转矩电流比控制相比,具有跟踪参考信号迅速、动态性能好、参数调整少的优点。
[Abstract]:Compared with id=0 control, the maximum torque / current ratio control at the same capacity can make the PMSM output larger torque at low speed and the dynamic performance is better. It is suitable for driving control of mechanical elastic energy storage system. A method of maximum torque / current ratio control for permanent magnet synchronous motor based on backstepping control is proposed. The minimum dq axis current relationship under maximum torque / current ratio control is established by applying the principle of extreme value. Using the least square algorithm with forgetting factor to identify the load torque and moment of inertia of the coiled spring at the same time, a speed backstepping controller and a current backstepping controller are designed to replace the traditional speed Pi controller and the current Pi controller, respectively. The stability of the control algorithm is proved theoretically. The experimental results show that the stator current required by this method is smaller than that required by id=0 control based on backstepping, and compared with the maximum torque / current ratio control based on Pi. It has the advantages of fast tracking reference signal, good dynamic performance and less parameter adjustment.
【作者单位】：新能源电力系统国家重点实验室(华北电力大学);
【基金】：国家自然科学基金项目(51407077) 中央高校基本科研业务费专项资金(2014MS93,2017MS095) 新能源电力系统国家重点实验室自主研究课题(LAPS2016-28) 国家电网公司2016年总部科技项目(5204BB16000F)资助
【分类号】：TM341

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