基于PWM控制的开关磁阻电机中低速无位置传感器控制方法

doi:10.7527/S1000-6893.2015.0015

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基于PWM控制的开关磁阻电机中低速无位置传感器控制方法

胡荣光¹, 邓智泉¹, 蔡骏^2,3,4,5, 王骋¹

1. 南京航空航天大学自动化学院, 南京 210016;
2. 南京信息工程大学信息与控制学院, 南京 210044;
3. 江苏省气象能源利用与控制工程技术研究中心, 南京 210044;
4. 江苏省大气环境与装备技术协同创新中心, 南京 210044;
5. 英国谢菲尔德大学自动控制与系统工程系, 谢菲尔德 S1 3JD

收稿日期:2014-08-22 修回日期:2015-01-12 出版日期:2015-07-15 发布日期:2015-01-30
通讯作者: 邓智泉男, 博士, 教授, 博士生导师。主要研究方向: 无轴承电机, 高速电机, 交流电机控制。 Tel: 025-84892714 E-mail: dzq@nuaa.edu.cn E-mail:dzq@nuaa.edu.cn
作者简介:胡荣光男, 硕士研究生。主要研究方向: 开关磁阻电机控制。 Tel: 025-84892714 E-mail: hrgggg@126.com;蔡骏男, 博士, 教授。主要研究方向: 开关磁阻电机, 电动汽车驱动系统,新能源发电。 Tel: 025-84892714 E-mail: j.cai@nuist.edu.cn
基金资助:
国家自然科学基金(51277094)

Sensorless control of switched reluctance motor at low and medium speeds based on PWM control

HU Rongguang¹, DENG Zhiquan¹, CAI Jun^2,3,4,5, WANG Cheng¹

1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. School of Information and Control, Nanjing University of Information Science and Technology, Nanjing 210044, China;
3. Jiangsu Engineering Research Center on Meteorological Energy Using and Control, Nanjing 210044, China;
4. Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology, Nanjing 210044, China;
5. Department of Automatic Control and System Engineering, The University of Sheffield, Sheffield, S1 3JD, UK

Received:2014-08-22 Revised:2015-01-12 Online:2015-07-15 Published:2015-01-30
Supported by:
National Natural Science Foundation of China ( 51277094)

摘要/Abstract

摘要：

无位置传感器的中低速运行控制是开关磁阻电机研究的难点问题。为实现中低速阶段对转子位置的连续估计,提出一种基于PWM控制的无位置传感器方法。该方法将开通关断角所对应的参考信号与高频三角载波进行交截,并将得到的PWM信号作为不对称半桥功率变换器的开关管驱动信号。通过对PWM信号进行频谱分析可知,该PWM注入方式等效于注入载波频率的高频正弦信号。然后,对电流信号进行滤波及坐标变换处理,解算出连续的转子位置信息。针对电感曲线正弦度不高的问题,通过移相相减的方法消除二次谐波,简化了位置估计过程。该方法无需额外注入高频正弦信号,易于工程实现,并具备高频信号注入法的精度。最后针对一台12/8结构样机,进行了相应的仿真和实验,验证了该方法的可行性。

关键词: PWM控制, 高频信号注入, 位置估计, 无位置传感器, 开关磁阻电机

Abstract:

Sensorless control at low and medium speeds is still a challenging problem for switched reluctance motors. In order to estimate the rotor position continuously, a sensorless method based on PWM control is proposed. High-frequency triangle carrier waves intersect with low-frequency reference signals, which correspond to the rotor position. And the resultant PWM signals are used to drive the switching transistors of asymmetric half bridge converter. Spectral analysis shows that it is equivalent to inject sinusoidal signals with the same frequency as carrier waves. Then, after filtering and coordinate transformation, continuous rotor position information can be obtained. For the bad quality of sinusoidal inductance curve, phase shift and subtraction are applied to remove second harmonics, thus simplifying the process of estimation. Without injecting extra high-frequency signals, the method possesses the same accuracy and is easy for implementation. Finally, simulations and experiments are conducted on a 12/8 prototype to verify the validity of this method.

Key words: PWM control, high-frequency signal injection, position estimation, sensorless, switched reluctance motor

中图分类号:

胡荣光, 邓智泉, 蔡骏, 王骋. 基于PWM控制的开关磁阻电机中低速无位置传感器控制方法[J]. 航空学报, 2015, 36(7): 2340-2349.

HU Rongguang, DENG Zhiquan, CAI Jun, WANG Cheng. Sensorless control of switched reluctance motor at low and medium speeds based on PWM control[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(7): 2340-2349.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

基于PWM控制的开关磁阻电机中低速无位置传感器控制方法

Sensorless control of switched reluctance motor at low and medium speeds based on PWM control

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