CodePudding user response:
As we all know, when the harmonic component of the current is smaller, the torque ripple of the all-digital fuzzy 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 the torque ripple of the all-digital fuzzy 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.
CodePudding user response:
It is well known that the smaller the current harmonic component, the greater the torque ripple of permanent magnet synchronous motor control system, when the current THD within 10%, reference for practical engineering application, is acceptable, therefore, the analysis of the current THD is to reduce the permanent magnet synchronous motor control system is the important factor of the torque ripple,, according to the mechanical equations of motion of the motor torque speed were obtained through the low-pass filter output, its cut-off frequency is B/J, when the torque ripple frequency higher than that of low pass filter, even through the torque, the motor can obtain a more satisfactory control performance ripples, in addition, the focus of this article is to ensure that in implementing overshoot volume is very low, the speed at the same time to realize anti-jamming performance and high precision and high stability, the control system of permanent magnet synchronous motor current distortion and the torque ripple is the focus of the research,