Analytical Modeling of Open Circuit Magnetic Field in Wound Field and Series Double Excitation Synchronous Machines
- Resource Type
- Authors
- Rachid Ibtiouen; Mohamed Gabsi; H. Bali; Georges Barakat; Yacine Amara
- Source
- IEEE Transactions on Magnetics. 46:3802-3815
- Subject
- Physics
Field (physics)
Rotor (electric)
Stator
Cogging torque
Mechanics
Electronic, Optical and Magnetic Materials
law.invention
Magnetic field
symbols.namesake
Nuclear magnetic resonance
Maxwell's equations
law
Magnet
symbols
Electrical and Electronic Engineering
Excitation
- Language
- ISSN
- 1941-0069
0018-9464
We describe an exact 2-D analytical model for predicting the open circuit magnetic field in idealized structures of wound field and series hybrid excitation permanent-magnet synchronous machines. This technique can be used for either internal or external rotor radial-field machine topologies. It involves analytical solution of Maxwell's equations in stator and rotor slots and annular air-gap/magnet regions. We compare results from this analytical model to corresponding finite-element analyses. We then use it to estimate the cogging torque, induced back-electromotive force, and to study the effects of rotor skewing.