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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Sensorless Optimal Commutation Steady Speed Control Method for a Nonideal Back-EMF BLDC Motor Drive System Including Buck Converter
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Sensorless Optimal Commutation Steady Speed Control Method for a Nonideal Back-EMF BLDC Motor Drive System Including Buck Converter

机译：无传感器最优换向稳态速度控制，包括降压转换器，包括降压变换器的非积极反馈EMF BLDC电机驱动系统

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摘要

For the low inductance brushless dc motor with nonstandard trapezoidal waveform and asymmetric three-phase back-EMF, this article first analyses the influence of nonideal back-EMF on the position of the detected commutation point when sensorless method is applied. Then, the fluctuations of electromagnetic torque driven by square wave current are compared when commutating according to several different commutation points, and the optimal commutation control method is proposed. In addition, for the low inductor motor with nonideal back-EMF and buck front-end drive circuit structure, an integrated nonlinear model of motor and buck drive circuit including precise back-EMF parameters is established. Based on the nonlinear model, the feasibility of model linearization is analyzed. The linearization method based on input-output feedback method is proposed, and a steady-state controller based on linearization model is designed. Finally, experimental results verify the effectiveness of the proposed optimal commutation control and steady speed controller.
机译：对于具有非标准梯形波形和不对称三相回电源的低电感无刷直流电动机，本文首先在应用无传感器方法时分析了非积分返回emf对检测到的换向点位置的影响。然后，在根据几个不同的换向点进行换向时比较由方波电流驱动的电磁扭矩的波动，并且提出了最佳换向控制方法。另外，对于具有非外部反馈和降压前端驱动电路结构的低电感电机，建立了电动机和降压驱动电路的集成非线性模型，包括精确的反态参数。基于非线性模型，分析了模型线性化的可行性。提出了基于输入输出反馈方法的线性化方法，设计了基于线性化模型的稳态控制器。最后，实验结果验证了所提出的最优换向控制和稳态控制器的有效性。

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