基于定子电压空间矢量感应电动机的转速控制

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摘要为了简化控制算法,进一步提高感应电动机转速控制系统的性能,在空间矢量理论的基础上,揭示了定子电压矢量对电动机转子磁场和电磁转矩的控制作用,提出以转差角频率调控定子电压矢量,并通过三相定子电压的SVPWM实现,以形成对转子磁链和电磁转矩的控制,达到快速控制电动机转速的原理、方法和系统。该方法避免了坐标变换,算法简单。通过仿真和实验可看出,由此原理构建的电动机转速控制系统具有良好的起动性能、调速性能、抗负载扰动性能及对电动机电阻值变化较好的鲁棒性。

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	冯惕
	王俭

关键词 ：感应电动机, 定子电压矢量, 转差角频率, 转速控制, 鲁棒性

Abstract：In order to simplify the control algorithm and further improve the performance of induction motor speed control system, on the basis of space vector theory, the function that the stator voltage vector controls rotor magnetic field and electromagnetic torque is revealed. The principle, method and system are presented in which slip angular frequency variable regulates the stator voltage vector that is implemented by three-phase SVPWM stator voltage, to form the regulation of rotor flux linkage and electromagnetic torque and achieve rapid control of motor speed. This method avoids the coordinate transformation and makes algorithm simple. Simulation and experiment results show that the motor speed control system which is built by this principle has good performance of starting, speed regulation, anti-load disturbance and better robustness to motor resistance variation.

Key words： Induction motor stator voltage vector slip angular frequency speed control robustness

收稿日期: 2012-01-30 出版日期: 2014-06-16

PACS:

TM343

作者简介: 冯惕男,1958年生,硕士,副教授,高级工程师。主要研究方向为满意优化控制,电机的变频控制,双电机变频器等。王俭男,1956年生,硕士,教授,研究方向为电机控制,机器人控制技术等。

引用本文:

冯惕, 王俭. 基于定子电压空间矢量感应电动机的转速控制[J]. 电工技术学报, 2014, 29(1): 123-130. Feng Ti, Wang Jian. Induction Motor Speed Control Based on Stator Voltage Space Vector. Transactions of China Electrotechnical Society, 2014, 29(1): 123-130.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I1/123

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