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Permanent magnet (PM) motor can offer high fault tolerant by introducing fractional slot concentrated winding. However, this winding configuration produces high back-EMF under flux weakening capacity because of low reluctance torque. Then, other protection techniques will likely be required to prevent dangerous overvoltage conditions if the inverter shuts down unexpectedly at high speeds. Additionally,...
This paper proposes a new type of motor with hybrid permanent magnet material (HPMM); termed HPMM motor. The key of the proposed HPMM motor is the excitations, which combined rare-earth PM (REPM) with ferrite PM (FPM). To investigate the HPMM motor extensively, the HPMM motors with parallel magnetic circuit (PMC) and serial magnetic circuit (SMC) are designed. Because of the property difference between...
A novel stator hybrid excited doubly salient (HEDS) brushless motor is presented in this paper. The topology and operation principle of the proposed motor are introduced. As supply to the HEDS motor drive system, a power converter with split capacitors is used and a basic current control method for this converter is explained. To achieve the maximum torque, an advanced angle control scheme is developed...
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