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This paper presents a comparison between fractional-slot concentrated-winding (FSCW) and integer-slot distributed-winding (ISDW), and analyzes the performance of the permanent magnet generator with FSCW. Meanwhile, the demagnetization phenomenon under short-circuit faults is analyzed and gives a guideline for optimal design of generators so that the irreversible demagnetization can be avoided with...
This paper analyzes and studies the methods of reducing torque pulsation in interior permanent magnet (IPM) machines with fractional-slot concentrated-winding (FSCW) for hybrid electric vehicles. Several methods are proposed to reduce the cogging torque and ripple torque for the IPM machine. Two finite element analysis (FEA) models of the IPM machine, including FSCW and integer-slot distributed windings,...
This paper analyzes and compares the performance of fractional-slot concentrated-windings (FSCW) and integer-slot distributed-windings for reducing torque pulsation in interior permanent magnet (IPM) machine for a hybrid electric vehicle. By analyzing the analytical expressions of cogging torque and ripple torque derived by energy method and principle of virtual displacement, several methods are proposed...
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