[其它]Key technologies of large and medium power electromechanical energy conversion under extreme operati

Abstract-Based on the key technologies analyses of high-speed 6|q\ M  
high-power-density electric machines and low-speed NYS|fa  
high-torque-density electric machines, the common scientific {Vy2uow0  
problem is extracted from the study of large and medium power g8<Ja
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electromechanical energy conversion devices under extreme /:-8 ,`  
operating conditions. The common scientific problem is how to |)4Fe/!cJ  
make full use of physical properties of electromagnetic materials. *_Y{wNF*  
To solve above scientific problems, two major techniques, fine 5&}
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modeling on electromagnetic (EM) material properties and * !4r}h`  
precise design of electric machines, are proposed and thoroughly Y](kMNUSg  
studied. The research fields range from the effect of multi-factors, &_mOw.  
such as magnetic field, frequency, temperature and stress, on the :Osw4u]JXd  
EM materials to the analysis of EM field, temperature field, F/BB]gUB  
mechanical property and multi-physics field coupled technology, 5r#0/1ym!  
which refers to many disciplines including electrical engineering, nt$VH  
engineering thermal physics, engineering mechanics, computer p$r=jF&  
technology, and so on. The extraction of scientific problems Jb. V4  
provides a theoretical guidance for research on .. O>
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