Speed Control of Matrix Converter-Fed Five-Phase Permanent Magnet Synchronous Motors under Unbalanced Voltages
Subject Areas : electrical and computer engineering
B.
Yousefi
1
S.
Soleymani
2
B.
Mozafari
3
S. A.
Gholamian
4
(Babol Noshirvani University of Technology)
Abstract :
Five-phase permanent magnet synchronous motors (PMSM) are often used for specific applications, in which the precise speed control of the motor by an appropriate driver design is important. The use of three-phase to five-phase matrix converter is a suitable technique for constructing such a motor driver. Since the input voltages of such converters are directly supplied by input three-phase supply voltages, an imbalance in the voltages will cause problems such as unbalanced stator currents and electromagnetic torque fluctuations, making it inefficient to use such converters. In this paper, a new method is proposed to remove torque oscillator factors based on direct power control (DPC). In this way, a number of features including speed, torque, and flux of the motor will improve in terms of the above-mentioned conditions. Simulations are analyzed using Matlab/Simulink software.
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