Open AccessComprehensive study on divided‐teeth and permanent magnet assisted outer‐rotor switched reluctance motors
Author(s) -
Farmahini Farahani Ehsan,
Mirsalim Mojtaba
Publication year - 2020
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2020.0189
Subject(s) - cogging torque , switched reluctance motor , magnet , torque , flux linkage , finite element method , stator , rotor (electric) , control theory (sociology) , magnetic reluctance , direct torque control , materials science , engineering , mechanical engineering , physics , structural engineering , computer science , electrical engineering , induction motor , thermodynamics , control (management) , voltage , artificial intelligence
A comprehensive study on divided‐teeth permanent‐magnet assisted outer‐rotor switched reluctance motors (SRMs) is carried out. Foremost, it looks into the impact of the number of teeth per stator pole. The average and maximum torque profiles of the compared structures are obtained using finite‐element simulations. It is shown that as the number of teeth increases, higher torque is obtained. Then, six small PMs are inserted inside the teeth of neighbouring modules to form new hybrid reluctance motors (HRMs). The four permanent‐magnet assisted SRMs are compared in terms of the average and maximum torques using finite‐element simulations. Based on the comparison results, the 48/50 HRM is selected as the best candidate among all compared SRMs and HRMs. The magnetic flux density distributions, static torque, and flux linkage characteristics of the proposed HRM are obtained. Moreover, the cogging torque profile of the motor is obtained, which approximates to zero. Next, the steady‐state performances of the proposed HRM are obtained under low‐ and high‐operating speeds. Finally, a prototype of the machine is constructed and the test results are obtained and compared with those of the simulations, which show that there is a good agreement between these results.