A direct torque control algorithm for permanent magnet synchronous motors with minimum torque pulsation and reduced electromagnetic interference noise

• Published in: International journal of electronics Vol. 96; no. 11; pp. 1191 - 1196
• Main Authors: Adam, Ali Ahmed, Gulez, Kayhan, Pastaci, Halit
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 01.11.2009; Taylor & Francis LLC
• Subjects: Algorithms; Applied sciences; Control systems; Electrical engineering. Electrical power engineering; Electrical machines; Electromagnetic compatibility; Electromagnetics; Electronics; Exact sciences and technology; hysteresis direct torque control; Information, signal and communications theory; Miscellaneous; Motors; permanent magnet synchronous motor; Regulation and control; Telecommunications and information theory; torque ripples; torque ripples; Electromagnetic compatibility; Synchronous motor; Noise level; Electromagnetic disturbance; Hysteresis loop; Switching conditions; Electromagnetic interference; Switching time; Electric motor; Dynamic response; Dynamic characteristic; Direct digital control; Stator; Control system; Sensorless control; Permanent magnet motors; Algorithm; Electromagnetic noise; Switching; hysteresis direct torque control; Torque control; permanent magnet synchronous motor; System simulation; Permanent magnet; Comparative study
• ISSN: 0020-7217; 1362-3060
• DOI: 10.1080/00207210903017271

In this work, a sensorless hysteresis direct torque control (HDTC) algorithm for a permanent magnet synchronous motor is described. The algorithm uses the output of two hysteresis controllers used in the traditional HDTC to determine two adjacent switching vectors per one sample time. The algorithm also uses the magnitude of the torque error, magnitude of the flux error and stator flux position to select the switching time for the selected vectors. The selection of the switching time utilises table structure which reduces the complexity of calculation. The simulation results of this proposed algorithm show adequate dynamic torque performance and considerable torque ripples reduction as well as lower current ripples and reduced electromagnetic interference noise level, as compared with HDTC.