电动车用交流异步电机宽速域控制策略

中国机械工程 ›› 2013, Vol. 24 ›› Issue (09): 1159-1164.

电动车用交流异步电机宽速域控制策略

胡建军;旦高亮;秦大同

重庆大学机械传动国家重点实验室，重庆，400044

出版日期:2013-05-10 发布日期:2013-05-16
基金资助:
重庆市自然科学基金资助重点项目(CSTC, 2011BA3019)；重庆市科技攻关计划资助项目(CSTC,2010AA6046)
Natural Science Foundation of Chongqing（No. CSTC, 2011BA3019）;
Key Technology R&D Program of Chongqing（No. CSTC,2010AA6046）

Control Strategy for Wide Speed Domain of AC Asynchronous Motor Used in Electric Vehicle

Hu Jianjun;Dan Gaoliang;Qin Datong

State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing,400044

Online:2013-05-10 Published:2013-05-16
Supported by:

Natural Science Foundation of Chongqing（No. CSTC, 2011BA3019）;
Key Technology R&D Program of Chongqing（No. CSTC,2010AA6046）

摘要/Abstract

摘要：

针对异步电机转速控制中传统电压型磁链观测方法引起的直流偏移问题，设计了通过截止频率实时调整的饱和反馈低通滤波磁链观测器。为解决传统弱磁计算不准确问题，提出了一种恒压弱磁控制方法，有效地实现了恒转矩区和弱磁区的平稳调速。在建立基于转子磁场定向的交流异步电机矢量控制数学模型的基础上，制定了一种综合考虑恒转矩区和弱磁区的基于MRAS系统的转速控制策略。对所提出的控制策略进行了仿真与实验，结果表明系统获得了良好的控制效果，验证了算法的合理性和有效性。

关键词: 交流异步电机, 矢量控制, 磁链观测, 弱磁控制

Abstract:

During speed control of AC asynchronous motor, according to the problems of direct current offset caused by traditional voltage model flux observer, a corresponding low-pass filter equipped with a real-time adjusting cut-off frequency and saturated feedback was designed for flux observer. A flux weakening control method with constant voltage was made in order to solve the problem of inaccurate calculation for traditional weak magnetic, so steady speed control was implemented efficiently in both constant torque region and weak magnetic region. Based on rotor field-oriented, the mathematical model of AC asynchronous motor was established using vector control. On the basis of above, a speed control strategy with model reference adaptive system was developed considering comprehensively constant torque region and weak magnetic region. The simulation and experimental results show that using the proposed control strategy can obtain good control effects, the legitimacy and effectiveness of proposed algorithm is verified.

Key words: AC asynchronous motor, vector control, flux observe, flux weakening control

中图分类号:

U469.72

胡建军, 旦高亮, 秦大同. 电动车用交流异步电机宽速域控制策略[J]. 中国机械工程, 2013, 24(09): 1159-1164.

HU Jian-Jun, DAN Gao-Liang, QIN Da-Tong. Control Strategy for Wide Speed Domain of AC Asynchronous Motor Used in Electric Vehicle[J]. China Mechanical Engineering, 2013, 24(09): 1159-1164.

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