Soft starting of large induction motors at constant current with minimised starting torque pulsations

Date

2000-10-12

Author

Zenginobuz, G
Cadirci, I
Ermiş, Muammer
Barlak, C

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The performance of a voltage-controlled, large induction motor soft starter has been improved, resulting in nearly perfect current and torque profiles. The performance analysis of the soft starter, motor - load combination has been carried out in dynamic state using a hybrid induction machine model which takes account of disconnected, two-phase and three-phase operational modes of the machine. Some simple control strategies have been proposed to keep the current constant at any preset value during starting, and to eliminate supply frequency starting torque pulsations. These are shown to be very effective in the elimination of reclosing transient torque and current components at any speed at the reconnection instant to the supply after an interruption, or at the instant of bus transfer. The proposed strategies have been verified experimentally on a laboratory machine using a special torque measurement system in the dynamic state.

Subject Keywords

Induction motor, Torque pulsations, Soft starter

URI

https://hdl.handle.net/11511/62953

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Graduate School of Natural and Applied Sciences, Conference / Seminar

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Soft starting of large induction motors at constant current with minimized starting torque pulsations Zenginobuz, G; Cadirci, I; Ermiş, Muammer; Barlak, C (2001-09-01) The performance of a voltage-controlled large induction motor soft starter has been improved, resulting in nearly perfect current and torque profiles. The performance analysis of the soft-starter motor-load combination has been carried out in the dynamic state using a hybrid induction machine model which takes account of disconnected two-phase and three-phase operational modes of the machine. Some simple control strategies have been proposed to keep the current constant at any preset value during starting, ...
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Citation Formats

G. Zenginobuz, I. Cadirci, M. Ermiş, and C. Barlak, “Soft starting of large induction motors at constant current with minimised starting torque pulsations,” 2000, p. 1593, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/62953.