Analysis of Performance Improvement of Passenger Car Synchronous Homopolar Generator with the Addition of Ferrite Magnets

Electric machines with hybrid excitation have increased torque density while maintaining a wide range of speed control. This article presents the results optimal design synchronous homopolar generator (SHG) ferrite magnets on rotor and winding stator for passenger cars. The use makes it possible to surface more efficiently, which in turn increases energy efficiency reduces dimensions generator. At same time, provides reliable brushless ability control flux. problem long-time calculation three-dimensional SHG structure, is especially relevant when using multi-iterative computer optimization, solved by computationally efficient Nelder-Mead method simplified model two-dimensional finite element analysis. It also clear that low ripple two stator-rotor stack combinations (SRSC) largely provided fact ripples individual SRSCs are antiphase. considering magnetic properties core sections made structural low-carbon steel discussed. has been found an increase both saturation level circuit magnetomotive force (MMF) winding, resistance irreversible demagnetization can be increasing their height. In addition, shown there significant performance excitation, comparison conventional without magnets.