IEEJ Journal of Industry Applications
Online ISSN : 2187-1108
Print ISSN : 2187-1094
ISSN-L : 2187-1094
Special Issue Paper
Using a Periodic Disturbance Observer for a Motor Drive to Compensate Current Measurement Errors
Takashi YamaguchiYugo TadanoNobukazu Hoshi
著者情報
ジャーナル フリー

2015 年 4 巻 4 号 p. 323-330

詳細
抄録

A general-purpose inverter controls the output current using information from current sensors for high-performance motor control. However, these sensors outputs, however, have some gain and offset errors that depend on the peripheral components and the characteristics of the current sensor. These errors cause an imbalance in the output current, which causes a torque ripple. The torque ripple leads to many problems. The authors have proposed a periodic disturbance observer (PDO) as a control method for vibration suppression. The current sensor error causes a vibration with a specific frequency; thus, this paper proposes a current sensor error compensation method to apply the PDO for suppressing this specific frequency. This method can suppress the harmonic current in real time, and the current control performance can be improved by error compensation. This paper explains the proposed method and demonstrates the effectiveness of the proposed method through simulation and experimental results. In addition, this paper verifies the follow-ability of sensor error variation.

著者関連情報
© 2015 The Institute of Electrical Engineers of Japan
前の記事 次の記事
feedback
Top