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Title: Investigation of a new hybrid excitation machine with auxiliary winding for energy recycling
Authors: Zhao, X 
Niu, SX 
Keywords: Auxiliary winding
Energy recycling
Parallel hybrid excitation
Stator flux
Issue Date: 2017
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on magnetics, 2017, v. 53, no. 11, 8110505 How to cite?
Journal: IEEE transactions on magnetics 
Abstract: From a new stator-flux perspective, a comparative study between the series and parallel hybrid excitation machine (PHEM) is conducted and it is revealed that in PHEMs there still exist distinct stator-flux harmonic components during high-speed flux weakening operation, which could be further utilized to improve the torque capability at high-speed range. Inspired by this idea, an auxiliary winding is creatively introduced into PHEMs to recycle and utilize the magnetic field energy generated during the field regulation. A new design case is presented in this paper, in which two sets of armature windings with different pole pair numbers are arranged to realize the function of flux weakening operation and energy recycling, respectively. The feasibility of this new hybrid solution is evaluated by using the finite-element analysis. Furthermore, a prototype is manufactured and relevant experiments are performed. The experimental results agree well with the theoretical analysis and simulation results, which verify that the recycled energy can be effectively used to boost the output torque and power of PHEMs in the high-speed region.
Description: IEEE International Magnetics Conference (Intermag), Dublin, Ireland, Apr 24-28, 2017
ISSN: 0018-9464
EISSN: 1941-0069
DOI: 10.1109/TMAG.2017.2693402
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