Abstract
A novel hybrid excitation synchronous machine with asymmetrically stagger permanent magnet (ASHESM) is developed. Its structure and field control principle are described and design equations are derived. Three-dimensional finite element analysis is used to obtain the no-load magnetic field distributions and field control capability under different field currents. A 1-kW prototype machine is designed, manufactured, and tested. The measured results agree well with finite element predictions. It shows that the flux of the prototype machine can be adjusted over a wide range with a relatively low field current.
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