Sensorless vector controlled induction machine drives with fast stator voltage offset compensation

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-10-03 DOI:10.1109/IAS.1999.799167

H. Kubota, Yukio Kataoka, H. Ohta, K. Matsuse

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引用次数: 12

Abstract

This paper presents a method for improving the performance at low speed of sensorless vector controlled induction machines. The speed range for such machine drives is limited to about 1:100 in industry. The main reason for this limitation is inaccuracy of stator voltage regulation. The lower the motor speed becomes, the lower the stator voltage becomes. Therefore, it is difficult to regulate or measure the stator voltage precisely at low speed, and difficult to control motor speed and motor torque precisely. The authors have proposed a method of improving the low speed performance of sensorless vector controlled induction machine drives by offset compensation of the stator voltage. However, the method needs a lot of time to estimate the DC offset value included in the measured stator voltage. In this paper, a modified offset compensation algorithm is proposed. The newly proposed method needs only a few cycles to estimate it.

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无传感器矢量控制感应电机驱动与快速定子电压偏移补偿

本文提出了一种改善无传感器矢量控制感应电机低速性能的方法。这种机器驱动器的速度范围在工业上被限制在1:100左右。造成这种限制的主要原因是定子电压调节不准确。电机转速越低，定子电压越低。因此，难以在低速时精确调节或测量定子电压，也难以精确控制电机转速和电机转矩。作者提出了一种通过对定子电压进行偏置补偿来改善无传感器矢量控制异步电机低速性能的方法。然而，该方法需要大量的时间来估计包含在测量的定子电压中的直流偏置值。本文提出了一种改进的偏移补偿算法。新提出的方法只需要几个周期来估计它。

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Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370)

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