| Abstract: | ![]()
In the case of the sensorless control for the PMSM that estimates position and velocity from EMF using a model of synchronous motor with the voltage and current, it is desirable for voltage and current to be perfect sine waves. However, in reality, voltage and current contain various harmonic components, which negatively affect the estimation ability of the sensorless control. In this paper, we propose a method of improving the sensorless control performance for the IPMSM by suppression of harmonic component in current control loop of the vector control using Fourier transform and repetitive control. To suppress harmonic components, compensation signals are acquired using Fourier transform and repetitive control, and feedforward control is implemented with the acquired compensation signals. To evaluate the proposed system, the sensorless control system for the IPMSM is considered as an example. The system is constructed on the basis of the extended EMF disturbance observer, and the improvement potential of the sensorless control performance is demonstrated. The effectiveness of the proposed method is confirmed by experimental results. © 2007 Wiley Periodicals, Inc. Electr Eng Jpn, 159(4): 76–86, 2007; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20095 |
