-This paper presents the performance investigation and design technology of aLine Start-up Permanent Magnet Synchronous Motor (LSPMSM) with super premium efficiency, including a design consideration and evaluation for motor start-up, key performance, and advanced finite element analysis FEA) for the design, improvement and verification, prototype build and test, design and test data comparison with a Premium ® Efficient Induction Motor (PEIM). To assess the design technology, the LSPMSM prototype was built amended from a PEIM with the same frame, stator punching and rated output. Based on the prototype test, two novel design improvements and analyses have been done to eliminate noise and vibration. Additionally, the comparisons with the PEIM on the power factor, efficiency, frame size and active material consumption indicated that a significant performance improvement and active material cost reduction can be achieved by the LSPMSM.
-This team has designed, built, and successfully run a radial flux high temperature superconductor (HTS) trapped field magnet (TFM) motor. The motor was run in a zero field cooled mode. This paper conveys several lessons learned about the use of TFMs in motor and generator applications. The state of the art of bulk TFM material is reviewed. Attention is given to the difficulties of activating TFMs in a practical machine design. The difficulties are based upon (i) the cooling time needed to field-cool the TFMs; (ii) the maximum field which can be produced at the rotor using only MMF on the stator; and (iii) the maximum time for which the stator current can be high without sustaining insulation damage. This is followed by a prediction of improvements that can be expected using two significant departures from a conventional three-phase permanent magnet design. Both departures involve the addition of MMF on the rotor using a hybrid wound rotor design. Finally attention is given to predicting performance when no special activation is employed.
-This paper presents the performance investigation and design technology of aLine Start-up Permanent Magnet Synchronous Motor (LSPMSM) with super premium efficiency, including a design consideration and evaluation for motor start-up, key performance, and advanced finite element analysis FEA) for the design, improvement and verification, prototype build and test, design and test data comparison with a Premium ® Efficient Induction Motor (PEIM). To assess the design technology, the LSPMSM prototype was built amended from a PEIM with the same frame, stator punching and rated output. Based on the prototype test, two novel design improvements and analyses have been done to eliminate noise and vibration. Additionally, the comparisons with the PEIM on the power factor, efficiency, frame size and active material consumption indicated that a significant performance improvement and active material cost reduction can be achieved by the LSPMSM.
This paper presents the numerical simulation of flow-thermal coupling for 2 MW Doubly-Fed Induction Wind Generator (DFIG).With fundamental assumptions and corresponding boundary conditions, the number of grid is reduced to save calculation time. The temperature of internal air for different cooling system configuration is calculated with commercial FEA software FLUENT without assumption. Four cooling system configurations of DFIG are presented, analyzed and compared in details. The best cooling system configuration of DFIG has been found and will be used into our DFIG production.
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