A sensorless starting method for self-controlled synchronous motors

被引:1
作者
Hasegawa, Chihiro [1 ]
Nishikata, Shoji [1 ]
机构
[1] Tokyo Denki University, Chiyoda-ku, Tokyo 101-8457, 2-2, Kanda-Nishikicho
关键词
Current source inverter; Self-controlled synchronous motor; Sensorless drive; Ship; Starting with current chopping; Thyristor;
D O I
10.1541/ieejias.128.1381
中图分类号
学科分类号
摘要
A self-controlled synchronous motor is being used as a variable speed motor in industries to date, and nowadays it is also used for propelling a ship. In this type of motor, the information of rotor position is needed to achieve stable operations. A simple sensorless starting method for this motor is studied in this paper. An initial rotor position detecting method without any position sensor is first discussed. It is shown that the position can be detected easily by observing the electromotive forces induced in the armature windings due to the change in the field current. Then, a new starting method for the motor is proposed on the basis of the DC link current chopping during the starting period. It is clarified that based on the proposed method the starting of the motor can be realized independently of the load conditions, supporting the usefulness of the proposed method. Finally, the effects of various parameters in the system on the responses of dc input current and motor speed during starting up are discussed. © 2008 The Institute of Electrical Engineers of Japan.
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页码:1381 / 1387+9
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