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Salient-pole synchronous generators are conventional electric machines which have been widely studied over decades. Nevertheless, some aspects still constitute a challenge for designers and need to be approached with state-of-the-art modeling and computation techniques. An example is illustrated in this paper dealing with a 14 MVA synchronous generator. Different design solutions for its damper cage...
Temperature is the one focus of the considerations in the permanent magnet electric machine design. In the past, the stator core loss is considered as a whole or several sub-blocks heat source in the temperature field calculation, while the fact is that the stator iron loss is distributed throughout the core. Consequently, this approach will result in calculation error. To reduce the error, the magnetic-thermal...
Recently more attention has been paid to the high- speed generator for its many merits, such as high power density (small size), high efficiency, etc]. These high-speed operation impose stringent engineering design constrains not previously considered. Also axial flux permanent magnet machines have been used increasingly with use of high-energy magnets for various applications. They have several unique...
This paper deals with performance analysis of a permanent magnet generator (PMG) considering magnetic losses using d-q axis and equivalent circuit (EC) model based on analytical parameter estimation. Electrical parameters and magnetic power losses are estimated and calculated by analytical methods, respectively. Derived electrical parameters and magnetic losses are employed for the d-q axis and EC...
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