Electromagnetic analysis of a synchronous reluctance motor with single tooth windings
| Autor: | Barrie Mecrow, James D. Widmer, Christopher Donaghy-Spargo |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Stator
Computer science Flux 02 engineering and technology Power factor 01 natural sciences AC motor Reluctance motor law.invention law Control theory 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Torque Torque ripple Electrical and Electronic Engineering 010302 applied physics Rotor (electric) 020208 electrical & electronic engineering AC power Switched reluctance motor Electronic Optical and Magnetic Materials Direct torque control Electromagnetic coil Synchronous motor Induction motor |
| Zdroj: | IEEE transactions on magnetics, 2017, Vol.53(11), pp.8206207 [Peer Reviewed Journal] |
| Popis: | This paper explores some of the key electromagnetic design aspects of a synchronous reluctance motor that is equipped with single-tooth windings (i.e., fractional slot concentrated windings). The analyzed machine, a 6-slot 4-pole motor, utilizes a segmented stator core structure for ease of coil winding, pre-assembly, and facilitation of high slot fill factors (~60%). The impact on the motors torque producing capability and its power factor of these inter-segment air gaps between the stator segments is investigated through 2-D finite element analysis (FEA) studies where it is shown that they have a low impact. From previous studies, torque ripple is a known issue with this particular slot–pole combination of synchronous reluctance motor, and the use of two different commercially available semi-magnetic slot wedges is investigated as a method to improve torque quality. An analytical analysis of continuous rotor skewing is also investigated as an attempt to reduce the torque ripple. Finally, it is shown that through a combination of 2-D and 3-D FEA studies in conjunction with experimentally derived results on a prototype machine that axial fringing effects cannot be ignored when predicting the q-axis reactance in such machines. A comparison of measured orthogonal axis flux linkages/reactances with 3-D FEA studies is presented for the first time. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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