對于自抗擾控制作為轉速環的，PI控制作為電流環的 永磁同步電機控制系統，相電流THD分析有相關介紹？一般是THD多少可以算是正常呢？
uj5u.com熱心網友回復：
As we all know, when the harmonic component of the current is smaller, the torque ripple of the PMSM control system is better. When the current THD is within 10% it is acceptable, referencing practical engineering applications. Therefore, the analysis of the current THD is an important factor for reducing torque ripple of the PMSM control system.And according to mechanical motion equation of the motor, the output of the speed is obtained by the torque through the low-pass filter, whose cut-off frequency is B/J. If the frequency of the torque ripple is higher than that of the low-pass filter, the motor can obtain relatively satisfactory speed regulation performance even through the torque ripple exists. In addition, the focus of this paper is to ensure that the anti-disturbance could be achieved with the very low overshoot, the high-accuracy, and high-stability of the speed performance simultaneously. The current distortion and torque ripple of the PMSM control system would be the next focus point of future research.
uj5u.com熱心網友回復：
眾所周知，電流諧波分量越小，永磁同步電動機控制系統的轉矩脈動越大。當電流THD在10%以內時，參考實際工程應用，是可以接受的。因此，電流THD的分析是降低永磁同步電動機控制系統轉矩脈動的重要因素。根據電機的機械運動方程，轉矩通過低通濾波器獲得轉速輸出，其截止頻率為B/J，當轉矩脈動頻率高于低通濾波器頻率時，即使通過轉矩，電機也能獲得較為滿意的調速性能漣漪存在。另外，本文的重點是保證在實作超調量很低、速度性能高精度和高穩定性的同時實作抗干擾。永磁同步電動機控制系統的電流畸變和轉矩脈動是下一步研究的重點。
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標籤：智能硬件