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The paper compares four analytical models, viz. relative permeance (RP), complex permeance (CP), subdomain (SD) based on single slot/pole and exact SD, for predicting electromagnetic performance of surface-mounted permanent magnet brushless machines. The RP model is simple, takes less computational time for predicting electromagnetic torque although modification is often required to account for fringing...
The paper presents a combined complex permeance (CP) and sub-domain (SD) model for predicting the open-circuit field, back-EMF, electromagnetic torque and cogging torque of surface-mounted permanent magnet machines. It significantly improves the computational speed since it is only required to solve a large equation set once, which otherwise needs to be solved for each rotor position in the SD model,...
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