Hybrid Parallel Inner-Magnet Machine
Researchers at Purdue University have developed a topology for a hybrid rotating electrical machine containing a field winding and permanent magnets on the rotor. The rotor pole of the machine is comprised of a permanent magnet interior to two steel components, all of which are surrounded by the rotor field winding. The magnet and the steel components extend from the rotor backiron to the air-gap. In recent years, the design of electrical machinery has changed significantly due to the development of multi-objective optimization techniques, allowing complex systems to be design based on competing objectives. A particular machine design is evaluated based on the machine mass and total loss. The performance of a machine topology is obtained from a family of designs on the Pareto-optimal front that provide the overall mass vs. loss tradeoff. It can be shown that the hybrid parallel inner-magnet (HPI) machine topology outperforms alternative hybrid topologies, as well as the traditional wound rotor synchronous machine (WRSM).
Hybrid design that utilizes field winding and magnetsLow-loss flux sourceVoltage regulation capabilities
Power generation
Scott SudhoffPurdue Electrical and Computer Engineering
United States
9,780,715
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