Deng Yuan

Design and Electromagnetic Analysis of SFPM

Topology and operation principle of a novel doublysalient permanent magnet motor (DSPM) named switchfluxing permanent magnet motor (SFPM) are analyzed. Atfirst, based on the design principle of DSPM, originaldimensions are determined. Secondly, after the physical modelof motor is built, based on finite element analysis, the magneticfield distributions, flux densities in air-gap with no-load, magnetize and demagnetize, open-circuit flux-linkage, back-EMF, winding inductance at different conditions areinvestigated. At last, the motor exhibits higher torque density, most appropriates for brushless AC operation and so on. Theresults provide a foundation for analysis, design andparameter optimization.

The Calculation Method of Maximum Injection Wind Power

In recent years, with the increasing development andapplication of wind power technology, the proportion of thewind power in power system is greater and greater. So, theconnection of wind power impacts on power system a lot. Inthe paper, based on the variable speed constant frequencydoubly-fed wind power generator, the IEEE-14 system isinjected to the wind farm. It adopts the method of combinationof steady and transient to analyze and get the maximumcapacity of stability for the wind power system. Simulationresults verify the accuracy of the method and determine themaximum capacity of wind farm.