Overload-Capability Analysis of PMSM Servo- and Robot-Drives Using DTC-SVM Methods: Part 2

Abstract

Direct torque control with space vector modulation (DTC-SVM) is one of the best methods for controlling the electromagnetic torque of permanent magnet synchronous motor (PMSM) drives. This method grants excellent dynamic closed-loop torque-control performance. In this article (in Part 2) a simplified version of the new DTC-SVM method presented in Part 1 is presented. Also, it is shown that the simplified version has somewhat lower but still very high overload-capabilities. The adaptive voltage vector calculator mentioned in Part 1 is detailed in this Part. Finally, an analysis of the torque-ripples in the extra heavy overloading region is carried out at the end of this article.