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Because of the higher efficiency, higher power factor, higher power density and better dynamic performance, there is ever increasing attention to applying permanent magnet synchronous motors (PMSM) to traction system. In this paper, the parameter selection of the permanent magnet traction drive motor (PMTDM) was carried out. Some useful conclusion was obtained. At last, a motor design program was...
A high performance rectifier with a novel structural and wide speed range for direct-drive wind energy system has been investigated and design. The utilization rate and efficiency of low wind are critical focus for wind energy system, in the form of ultimate output dc voltage as the optimum object, a traditional full-bridge PWM rectifier and a boost circuit for the direct-drive permanent magnet synchronous...
The transverse flux permanent magnet synchronous machine (TFPM) is a novel machine arousing widespread concern in recent years. Achieving high torque density to save energy and rough material and reduce the volume and weight of the machine is the best features of TFPM. However, because of low power factor and complex manufacture technics, the application of TFPM is restricted. The dissertation is...
As one of the connections for three-phase induction motor to operate from single-phase supply, SEMIHEX connection can enable three-phase induction motor have approximated symmetrical operation. In this paper, the method of symmetrical component is used to obtain the condition for symmetrical operation, and the phasor diagram for symmetrical operation is given. Experimental studies for operation characteristics...
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