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A radial-radial flux compound-structure permanent-magnet synchronous machine (CS-PMSM) is an electromagnetic transmission which is integrated by two concentrically arranged electric machines. As the two electric machines share a rotor as structural and magnetic common part, their magnetic paths are coupled. The magnetic-path coupling may cause the magnetic-field interference of the two machines, which...
Recently, electric motors are required to show high efficiency/power/torque within low cost/size and noise in every application field, such as home appliance and industrial field. This paper proposed a design method that can result in motors that show low-cost and high output characteristics. An optimally designed flat type IPMSM and a V type IPMSM was design. For the design, a novel method considering...
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...
Previous work has shown that it is possible to design surface permanent magnet (SPM) synchronous machines using fractional-slot concentrated windings to achieve wide speed ranges of constant-power operation. A closed-form analytical technique is now available to rapidly analyze candidate SPM machine designs using concentrated windings and tune them to meet the critical condition for optimal flux weakening...
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