Application of Power Droop Control in Multi-motor AC Drive System

Aiming at the problem of uneven distribution of output torque in multi-motor AC drive system with hard fixed joint, this paper proposed a power droop based torque balance control strategy, which enables the converter to balance the torque of two AC asynchronous motors without signal interconnection....

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Bibliographic Details
Main Authors: HU Xian, WEN Yuliang, HU Liang
Format: Article
Language:zho
Published: Editorial Office of Control and Information Technology 2020-01-01
Series:Kongzhi Yu Xinxi Jishu
Subjects:
Online Access:http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2020.05.006
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Summary:Aiming at the problem of uneven distribution of output torque in multi-motor AC drive system with hard fixed joint, this paper proposed a power droop based torque balance control strategy, which enables the converter to balance the torque of two AC asynchronous motors without signal interconnection. Experimental results show that the proposed method can effectively balance output torques of the two motors, avoiding the single motor damage caused by long-term overload operation under uneven distribution of torque, and solve the problems of signal mutual transmission and redundancy under the traditional master-slave control mode.
ISSN:2096-5427