Direct Speed Control of Permenant Magnet Synchronous Machine

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Dana, Shekoofe | 2016

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 49345 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Tahami, Farzad
Abstract:
Accurate and fast position controlling is an important issue in today’s industrial needs. Drives used for position control require fast dynamics on speed control. Cascade linear controllers have sluggish response due to bandwidth limitations on speed and current loop. These structures limit the dynamics above all in high power applications where the switching frequency is low. In this thesis, deadbeat direct speed control is proposed, which overcomes limitations by cascade loops resulting in high-speed control dynamics. This approach uses a model of the plant to generate the control signals. According to measured speed and currents, the controller specifies the best voltage vector in order to reach the reference speed. Unkown load torque is compensated using a disturbance observer. Simulation results are presented to demonstrate the validity of the proposed control scheme. The main features of this method are fast transient response, simplicity, and constant switching frequency
Keywords:
Predictive Control ; Permanent Magnet Synchronous Machine ; Direct Torque Control ; Speed Control ; Direct Speed Control

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