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Principle of Operation and Feature Investigation of a New Topology of Hybrid Excitation Synchronous Machine

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4 Author(s)
Zhuoran Zhang ; Coll. of Autom. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing ; Yangguang Yan ; Shanshui Yang ; Zhou Bo

We present a new topology of hybrid excitation synchronous machine (HESM) and describe operational principles and features of the new configuration. Using the radial/axial distribution of the magnetic field, we develop an equivalent magnetic circuit model. We obtain magnetic flux, flux density, and induced voltage with various electrical magnetomotive forces by calculating the nonlinear magnetic circuit equation. We studied the Influence on the radial magnetic field of the axial magnetic field by 3-D finite-element method. The results are in good agreement with calculation by our magnetic circuit model. Our findings indicate that the air-gap flux density of a flux-concentrating HESM is high and the magnetic field in the air gap can be successfully regulated. Experimental results of 3 kVA prototype machine verify the feasibility of the structure and the correctness of our analysis.

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Magnetics, IEEE Transactions on  (Volume:44 ,  Issue: 9 )