| 周江迪，孙建忠，白凤仙.基于两相脉冲电流峰值差的开关磁阻电机无位置传感器控制[J].,2022,62(3):246-253 |
| 基于两相脉冲电流峰值差的开关磁阻电机无位置传感器控制 |
| Sensorless control of switched reluctance motor based on two-phase pulse current peak difference |
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| DOI：10.7511/dllgxb202203004 |
| 中文关键词:开关磁阻电机无位置传感器控制脉冲注入电流差 |
| 英文关键词:switched reluctance motorsensorless controlpulse injectioncurrent difference |
| 基金项目:国家自然科学基金重大研究计划集成项目(U2013601). |
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| 中文摘要: |
| 开关磁阻电机的无位置传感器控制技术一直是当下的研究重点．传统的单相脉冲注入法简单易实施，但需要事先设定电流阈值；两相脉冲注入法虽无须阈值，但是转速上升时转子导通角过于滞后，应用转速范围有限．因此，为了保留无须电流阈值的优点，同时又能够拓宽导通区间，提出了一种新型两相脉冲注入法．在两相脉冲注入的基础上，检索两相响应电流峰值差的极大值，并在其附近通过曲线拟合来精准得到转子位置，从而达到没有位置传感器控制的目的．最后以12/8结构的开关磁阻电机为例进行了仿真实验，结果表明该方法转矩特性佳，转子位置计算误差小，具有有效性和可行性． |
| 英文摘要: |
| The sensorless control method of the switched reluctance motor has always been a hot research topic. The traditional single-phase pulse injection method is simple and easy to implement, but the current threshold needs to be set in advance. The two-phase pulse injection method does not require a threshold, but when the rotary speed increases, the rotor conduction angle is too lagging. Its rotary speed regulation range is limited. Therefore, in order to retain the advantages of not requiring a current threshold and broaden the conduction interval, a new two-phase pulse injection method is proposed. On the basis of two-phase pulse injection, the maximum value of the response current peak difference is retrieved, and the rotor position is accurately obtained by curve fitting in the vicinity of the extreme value, so that the operation could be controlled without a position sensor. Finally, simulations and experiments are carried out with a 12/8 structure of switched reluctance motor as an example. The results show that the method has good torque characteristics and small rotor position errors. This method is effective and feasible. |
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