基于参数在线校正的电动汽车异步电机间接矢量控制

发布时间：2018-02-26 15:27

本文关键词： 电动汽车异步电机间接矢量控制在线校正稳态磁链观测　出处：《电工技术学报》2014年07期 　论文类型：期刊论文

【摘要】：异步电机间接矢量控制在电力传动领域应用广泛。该控制方案依赖于电机的互感和转子电阻等参数。这些参数往往在运行中发生变化,从而导致驱动系统控制性能下降,在以转矩为控制目标的电动汽车驱动系统中该问题尤为突出。本文推导了间接矢量控制中电磁转矩和转子磁链与电机参数偏差之间的关系式。通过引入稳态转子磁链观测器,提出利用稳态转子磁链的幅值和位置角偏差对互感和转子时间常数等的倒数进行在线校正的新算法。该稳态转子磁链观测器以电压模型为基础,但其中的积分环节可转化为简单的代数运算,避免了纯积分数值计算所需的特殊处理。仿真和实验验证了新的校正算法在改善转矩的控制性能方面的有效性。
[Abstract]:The indirect vector control of asynchronous motor is widely used in the field of electric drive. The control scheme depends on the parameters such as mutual inductance and rotor resistance of the motor. These parameters often change in operation, which lead to the deterioration of the control performance of the drive system. In this paper, the relation between electromagnetic torque, rotor flux and motor parameter deviation in indirect vector control is derived. By introducing steady state rotor flux observer, a steady state rotor flux observer is introduced. A new on-line correction algorithm for reciprocal of mutual inductance and rotor time constant by using the amplitude and position angle deviation of steady rotor flux is proposed. The steady state rotor flux observer is based on voltage model. However, the integral can be transformed into simple algebraic operation, and the special processing of pure integral numerical calculation is avoided. The simulation and experiment verify the effectiveness of the new correction algorithm in improving the torque control performance.
【作者单位】：清华大学电机系电力系统及发电设备安全控制和仿真国家重点实验室;
【基金】：国家自然科学基金资助项目(51277102)
【分类号】：TM343

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