A Survey on Matrix Converter fed Direct Torque Control Techniques for AC Machines

Abstract

Direct Torque Control (DTC), a superior technique, which controls the stator flux and electromagnetic torque of an electrical machine. In spite of its numerous advantages, it possesses certain shortcomings like torque ripples, flux ripples, variable switching frequency and problems during the startup conditions. Recently, Matrix Converters (MC) have emerged as an efficient alternate for the Voltage Source Inverter employed in the DTC technique, which is capable of providing flexible and dynamic control over the torque and flux ripples associated in a machine. In this paper, a review on different control techniques associated in implementing the Matrix Converters for DTC method are categorized as follows: Subdivision of MC Voltage Vector method, SVM (Space Vector Modulation) based MC-DTC method, MC-DTC Duty Cycle Control, Employing Rotational Vectors of MC and Model Predictive Torque Control method. The pros and cons of each matrix converter fed direct torque control methods are presented by analyzing the experimental results from the literature.

KEYWORDS:

• Direct torque control
• Flux ripples
• Matrix converter
• Switching frequency
• Torque ripples
• Unity input power factor

Additional information

Notes on contributors

A. Sivaprakasam

Sivaprakasam Arumugam received his BE from Madurai Kamaraj University, India, in 2001, and his ME from the PSG College of Technology, Coimbatore, India, in 2003. He completed his PhD from Anna University, Chennai, India in 2014. He is currently an assistant professor in the Department of Electrical and Electronics Engineering, CEG Campus, Anna University, Chennai. His current research interests include the analysis of electrical machines, power electronics, and sensorless and high performance control of special electrical machines. Corresponding Author. E-mail: [email protected]

J. D. Anunciya

Anunciya J D received her BE degree from Loyola Institute of Technology, Chennai, India, in 2011 and her ME from St Joseph’s College of Engineering and Technology, Chennai, India, in 2013. She is currently pursuing her doctoral research in electrical and electronics engineering at CEG Campus, Anna University, Chennai, India. Her research interests include power electronic converters and control strategies. E-mail: [email protected]