A study on field coupling effects in consequent-pole hybrid excited permanent magnet machines with separated windings
Source abstract
Abstract
In this article, the new three-phase U-shaped and V-shaped consequent-pole hybrid excited machines with separated windings (CHEPMS machine) are proposed for superconducting flywheel energy storage. The stator teeth are divided into two types. Both the armature windings and the excitation windings are employed in the stator with a separated winding structure to achieve brushless hybrid excitation. The armature windings, which are designed as the toroidal windings, are placed on the stator yoke. The excitation windings are designed as a non-overlapping concentrated winding on tooth Ⅰ. The permanent magnets (PMs) are installed in the rotor with the consequent-pole structure. Through a particular field coupling effect, both the PM and direct current fields can be modulated into the harmonics that match the pole-pairs of the armature fields in the air-gap. Compared to the integrated winding, the separated winding can reduce the requirement of the inverter and simplify the control structure. Then, some electromagnetic properties, including flux linkages, no-load back electromagnetic forces, and electromagnetic torques, are analyzed by the finite element (FE) method. At last, a U-shaped CHEPMS prototype is manufactured to validate the analytical and the FE-predicted analysis.
Source: crossref · Quality: baseline
Affiliations
College of Nuclear Technology and Automation Engineering, Chengdu University of Technology 1 , Chengdu 610059,
School of Electrical Engineering, Southeast University 2 , Nanjing 210096,
School of Electric Power Engineering, Nanjing Institute of Technology 3 , Nanjing 211167,
Funding
University-Industry Collaborative Education Program
References (28)
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