Comparative Evaluation of Direct Torque Control Strategies for Permanent Magnet Synchronous Machines

• Published in: IEEE transactions on power electronics Vol. 31; no. 2; pp. 1408 - 1424
• Main Authors: Niu, Feng, Wang, Bingsen, Babel, Andrew S., Li, Kui, Strangas, Elias G.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.02.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Control systems; Direct torque control (DTC); duty ratio modulation (DRM); Hysteresis; Inverters; Mathematical models; model predictive direct torque control (MPDTC); Performance evaluation; permanent magnet synchronous machine (PMSM); Permanent magnets; Ripples; Simulation; Stator windings; Stators; Strategy; Switching; Switching frequency; Synchronous machines; Torque; Voltage control; model predictive direct torque control (MPDTC); Direct torque control (DTC); permanent magnet synchronous machine (PMSM); duty ratio modulation (DRM)
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2015.2421321

This paper presents a comprehensive evaluation of several direct torque control (DTC) strategies for permanent magnet synchronous machines (PMSMs), namely DTC, model predictive DTC, and duty ratio modulated DTC. Moreover, field-oriented control is also included in this study. The aforementioned control strategies are reviewed and their control performances are analyzed and compared. The comparison is carried out through simulation, finite-element analysis, and experimental results of a PMSM fed by a two-level voltage source inverter. With the intent to fully reveal the advantages and disadvantages of each control strategy, critical evaluation has been conducted on the basis of several criteria: Torque ripple, stator flux ripple, switching frequency of inverter, steady-state control performance, dynamic response, machine losses, parameter sensitivity, algorithm complexity, and stator current total harmonic distortion.