Study of the Influence of the Armature Number of Phases on the Electromagnetic Torque Quality in PM Vernier VRM

Abstract

This paper aims at dimensioning and studying three examples of PM Vernier machines with different number of armature phases to analyze, under the same conditions, the influence of the number of phases on the electromagnetic torque quality. An analytical energy model is first introduced along with the pre-design procedure which leads to a first three phase prototype (VRM_1). The performance of the latter is then studied using analytical approach and numerical modeling based 2 D FEM. Two other prototypes of 5 and 7 phases are sized using the same procedure and constraints as the first machine. Their performances are studied using the same approaches and the electromagnetic torques of the three structures are compared.

Keywords:

• VRM Vernier
• electrical machines with high torque
• torque ripple
• tooth effect
• polyphase machines
• dimensioning

Additional information

Notes on contributors

Nabil Senni

Nabil Senni was born in Batna, Algeria, in 1970. He received the Master's degree from Batna2 University, Algeria, in 2012. He was registred as a science doctorate student since 2013. His main field of research is the study of Vernier machines excited by permanent magnets at the rotor and the modeling of electromagnetic systems.

Soufiane Taibi

Soufiane Taibi was born in Algiers, Algeria, in 1972. He received the title of engineer from the University of Sciences and Technology Houari Boumedienne (USTHB), Algiers, Algeria, in 1996, and the Doctorate degree from the University of Sciences and Technologies of Lille (USTL), Lille, France, in 2002. He is currently a full professor at Batna2 University, Algeria, and a team leader in Electromagnetic systems design in the electric traction systems laboratory. His main area of research is the design, optimization, and experimentation with Vernier reluctance machines.

Abdelmounaim Tounzi

Abdelmounaim Tounzi was born in Casablanca (Morocco) in 1965. He graduated from University of Nancy, France (master’s degree in 1989) and Institute National Polytechnic of Lorraine (INPL), France (Ph.D. in 1993). From 1993 to 2008, he was an associate professor at University Lille 1 (USTL), France, and a member of the L2EP (Laboratory of Power Electronics and Electrical Engineering). Currently, he is a full professor at the same university. His research areas are the design and modeling of electromagnetic systems.