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首页> 外文期刊>IEEE transactions on industrial informatics >High-Precision Sensorless Optimal Commutation Deviation Correction Strategy of BLDC Motor With Asymmetric Back EMF
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High-Precision Sensorless Optimal Commutation Deviation Correction Strategy of BLDC Motor With Asymmetric Back EMF

机译：高精度无传感器最优换向偏差校正，BLDC电动机与不对称反电动势

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摘要

Due to the asymmetry of the actual back electromotive force (back EMF), the performance of the conventional commutation deviation correction method degrades in sensorless control of the brushless direct current (BLDC) motor. This article proposes a high-precision sensorless optimal commutation deviation correction strategy, which considers the asymmetry problems of the back EMF. First, this article discusses the optimal commutation issues and the internal power factor angle based commutation deviation correction method. Then, given the issue of the nonsinusoidal phase current integration and the asymmetric back EMF, a dual improved second-order generalized integrator with a positive sequence component extractor (DISOGI-PSCE) is proposed. The DISOGI-PSCE can effectively deal with the dc component and harmonics in flux-linkage and current integration, as well as the asymmetry of the back EMF. Finally, experimental tests are performed on a magnetically suspended control moment gyroscope BLDC motor, which verified the effectiveness of the proposed high-precision sensorless optimal commutation deviation correction method.
机译：由于实际背部电动势（反EMF）的不对称，传统换向偏差校正方法的性能降低了无刷直流（BLDC）电机的无传感器控制。本文提出了一种高精度的无传感器最优换向偏差校正策略，其考虑了后部EMF的不对称问题。首先，本文讨论了最优换向问题和基于内部功率因数角度的换向校正方法。然后，鉴于非内脉络相电流积分和不对称反射EMF的问题，提出了一种具有正序列分量提取器（DISOGI-PSCE）的双改进的二阶通用积分器。解迷的PSCE可以有效地处理DC分量和谐波中的助焊剂连杆和电流集成，以及后反电动势的不对称性。最后，在磁悬浮控制力矩陀螺BLDC电动机上进行实验测试，验证了所提出的高精度无传感器最佳换向校正方法的有效性。

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