Electromagnetic design and analysis of magnetless double-rotor dual-mode machines

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Pages (from-to)333-351
Journal / PublicationProgress in Electromagnetics Research
Publication statusPublished - 2013
Externally publishedYes


Two magnetless double-rotor (DR) dual-mode machines, namely the DR DC-excited multi-tooth switched reluctance (DR-DC- MSR) machine and the DR flux-switching DC (DR-FS-DC) machine, are proposed for special direct-drive applications where two rotating bodies are required to operate independently. Both machines can offer two different operation modes, namely the doubly-salient DC (DSDC) mode and MSR mode, normal and fault-tolerant operations, respectively. With the independent armature windings, both machines are able to couple their two rotors with two rotating bodies operating at various speeds. The proposed machines are designed and analyzed by using the time-stepping finite element method (TS-FEM). The simulation results confirm the validity of the proposed machines.