Open AccessInterior permanent magnet motor‐based isolated on‐board integrated battery charger for electric vehicles
Author(s) -
AbdelKhalik Ayman S.,
Massoud Ahmed,
Ahmed Shehab
Publication year - 2018
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.2017.0319
Subject(s) - battery charger , electrical engineering , magnet , battery (electricity) , automotive engineering , electric vehicle , engineering , on board , electric motor , physics , aerospace engineering , power (physics) , quantum mechanics
This study proposes an isolated on‐board integrated battery charger using an interior permanent magnet (IPM) machine with a nine‐slot/eight‐pole combination or its multiples, and equipped with a non‐overlapped fractional slot concentrated winding. The proposed winding layout comprises three three‐phase winding sets that are connected in such a way as to provide six motor terminals. Hence, a six‐phase or two three‐phase converters will be required for propulsion. Under motoring mode, the machine can be effectively regarded as a six‐phase machine, which provides a high fault‐tolerant capability, and allows for a ‘limp home’ mode of operation. Additionally, all magneto motive force subharmonics are eliminated, which significantly reduces the induced rotor eddy current losses, when compared with a conventional three‐phase motor having the same slot/pole combination. In battery charging mode, the winding is reconfigured, so that the machine is considered as a three‐phase to six‐phase rotating transformer. A 40 kW IPM machine is designed and simulated under different modes of operation using two‐dimensional finite element analysis to validate the proposed concept. A small‐scale prototype machine is also used for experimental validation.