Analysis of Dead-Time Compensation Method Using Disturbance Observer for Vector Control

摘要

This paper proposes analysis a dead-time error voltage compensation method with a disturbance observer for vector control, and analyses the method. The dead-time compensation is very important to improve performances in the low speed region. The compensation method is composed in the d-q rotational frame with the disturbance observer. As a result, a disturbance transmission characteristic becomes same as a high-pass filter. Then a stability of the compensator is hardly affected by controller parameters. In this paper, the validity of analysis is confirmed by experimental results under some conditions. The experimental results are similar to analyzed characteristics and indicate a validity of the analysis results.