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This paper has analyzed the magnetic circuit of three-phase 24-slot 20-pole fault tolerant permanent magnet machine in order to make the machine in electromechanical actuators have fault tolerant capability and large torque. It has been found that large inductance of fault-tolerant permanent magnet machine has been realized by increasing the stator tooth tip leakage inductance. Analytic expression...
This paper presents rib design in the rotor of IPMSM to increase maximum power in the field weakening region without variation of PM usage, conductor and size. Rib design is critical issue in the design of IPMSM due to leakage flux of permanent magnet and dominated by mechanical strength, therefore structural analysis should be conducted and minimum thickness should be selected. Rib design also affects...
This paper presents a novel multi-pole permanent magnet synchronous machine for the traction applications in which both high torque capability at low speed and wide speed operating range are required. The origin of the proposed machine construction is from a hybrid stepper machine, but the uniqueness lies in the utilization of soft magnetic composites (SMC) as magnet flux bypass core and filed-pole...
The proposed paper presents two design procedures of rotating electrical machines for 42 V embedded application. Particularly, for an electrical power steering, a three-phase interior permanent magnet synchronous machine (PMSM) fed by a switch redundant power converter and a six-phase induction machine (IM6) fed by a new type of six switches converter are designed for future 42 V DC system. For the...
The paper considers the optimal design of an open slot, external rotor torque motor. Combinations of pole and slot numbers are presented for which the winding factor is maximal and torque ripple is minimal. A detailed optimisation of the magnetic circuit design of the six most promising pole-slot configurations has been undertaken using the combination of a genetic algorithm (GA) and a parametric...
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