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This paper investigates the impact of downsizing induction motors for battery-electrical-vehicles (BEV). With three electrical torque equations based on stator current, stator voltage and stator flux density, we display the overload potential of an induction motor. The traditional efficiency map of an induction motor is extended by a so-called overload-area. An algorithm for sizing an induction motor...
Synchronous reluctance machines are a valid alternative to induction motors for industrial applications requiring variable speed regulation. To mitigate the well-known downside of their lower power factor, permanent-magnet-assisted topologies are adopted. Both high-strength rare-earth magnets and low cost ferrite magnets can be used in such machines. Their design and optimization procedures have been...
Stator DC-excited vernier reluctance machines (DC-VRMs) are vernier reluctance machines equiped with additional DC field winding in stator to generate the exciting field, a rotating field similar to synchronous reluctance machines (SynRMs). This paper compares the electromagnetic performance of two non-PM reluctacne machines including DC-VRMs and SynRMs. First, the basic operation principle of DC-VRMs...
The synchronous reluctance machine (SynRM) is studied. A brief comparison of the SynRM and its correspondent induction machine based on their physical nature as well as measurements from efficiency point of view is presented. The finite element method is used to investigate the most important geometrical parameters effect on the SynRM performance by studying the simplest rotor structure with just...
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