Guillaume Krebs

Intermittent control for efficiency gain of a switched reluctance machine

This paper presents the intermittent control applied on a switched reluctance machine (SRM) in electric vehicle application. The purpose is to increase the global efficiency of the system comprising the SRM and its power converter in order to extend the vehicle autonomy. First, the machine and its converter are shortly presented. The classical indirect average torque control is briefly reviewed with its efficiency cartography. Then, the principle of the intermittent control is deduced and the realization is also developed from the classical control structure. Specifically, with the purpose of maintaining the required average total torque, the intermittent control imposes a higher reference phase torque that has a higher efficiency during a shorter time. The achieved simulation results prove that this strategy can be realized within the SRM structure and can reduce the losses.

2D finite element model reduction for copper losses calculation in switched reluctance machines

This article proposes a 2D finite element model reduction that profits from one finite element solution of the machine modeling to find fast solutions in slots sub-domains when any variation of geometrical data occurred. It provides clear advantages in repetitive analyses when we search the optimized winding configuration for a given number of turns.