Why does ac motor speed control system replace dc motor speed control system?
The PWM control is the control core of the ac speed control system, and the final implementation of any control algorithm is almost done in various PWM controls. Has been put forward and the PWM control scheme of practical application to more than a dozen, articles about PWM control technology in many famous electric power international conference, such as PESC, IECON, EPE has formed at the annual meeting
Especially microprocessor used in PWM technology and the digitized, pattern is constantly renovated, from the initial voltage waveform sine pursuit, the sinusoidal current waveform, and then to sinusoidal magnetic flux; The development of PWM control technology has undergone a continuous innovation and continuous improvement from the optimum efficiency, the lowest torque ripple, and the elimination of noise. So far, new proposals have been made to further prove that the technology is in the ascendant.
Among them, the space vector PWM technology for the high voltage utilization and control algorithm is simple, low current harmonic, etc in the ac speed regulation system has been more and more used
