Open AccessComparisons of three‐phase and five‐phase permanent magnet assisted synchronous reluctance motors
Author(s) -
Bonthu Sai Sudheer Reddy,
Choi Seungdeog,
Baek Jeihoon
Publication year - 2016
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2015.0268
Subject(s) - magnetic reluctance , phase (matter) , magnet , reluctance motor , permanent magnet synchronous motor , switched reluctance motor , control theory (sociology) , automotive engineering , electrical engineering , engineering , computer science , physics , rotor (electric) , artificial intelligence , control (management) , quantum mechanics
This paper presents the comparison of three‐phase and five‐phase permanent magnet assisted synchronous reluctance motors (PMa‐SynRM) in terms of their design and performance characteristics. With higher fault tolerant capability, efficiency, and reliability, the five‐phase PMa‐SynRM can be a better substitute when compared with the three‐phase PMa‐SynRM in critical applications where safety is top priority. In this study, for a fair comparison, same design procedure using in lumped parameter modelling is followed in developing the three‐phase and five‐phase PMa‐SynRMs. The models are optimised to minimise cost and maximise efficiency. For further detailed comparison of the three‐phase and five‐phase PMa‐SynRMs, two‐dimensional finite element analysis (FEA) is utilised. Performance characteristics such as torque pulsation, back electromotive force, flux linkage, d ‐ and q ‐axis inductances versus their respective currents, cogging torque, efficiency plot, and torque‐speed characteristics are intensively simulated through FEA. The optimised three‐phase and five‐phase PMa‐SynRMs are fabricated with the same power rating (3 kW) and same volume. Experimental tests are conducted on the prototypes to validate the simulation results.