Design of Static Wireless Charging Coils for Integration into Electric Vehicle

Abstract

This paper analytically discusses various factors that
affects static wireless charging of an electric vehicle and also
presents the maximum efficient operating regime of this wireless
power transfer. The main goal of this paper is using magnetic
resonance to supply power wirelessly via air and to determine
the dependency of power supply on coil dimensions and other
factors. Different types of source and load coils are analyzed like
circular, spiral and helical. Different shapes of the coils are also
taken into account like square and circular. From the analysis, it
is found that the efficiency of power transfer is derivable by the
equivalent circuit point of view and also using coupled mode
theory. The analysis shows that the efficiency is dependent on
the coil radius, distances between the coils and the Q-factors of
the coils. From the analysis, an overview of the optimum design
of the coils and distance between the coils has been given.

Full text

 


   


 This paper analytically discusses various factors that
aects static wireless charging of an electric vehicle and also
presents the maximum ecient operating regime of this wireless
power transfer. The main goal of this paper is using magnetic
resonance to supply power wirelessly via air and to determine
the dependency of power supply on coil dimensions and other
factors. Dierent types of source and load coils are analyzed like
circular, spiral and helical. Dierent shapes of the coils are also
taken into account like square and circular. From the analysis, it
is found that the eciency of power transfer is derivable by the
equivalent circuit point of view and also using coupled mode
theory. The analysis shows that the eciency is dependent on
the coil radius, distances between the coils and the Q-factors of
the coils. From the analysis, an overview of the optimum design
of the coils and distance between the coils has been given.
 
          
 
    

       
        
       
        
  
         
           
      
         

         

       
       
        
   
         

 

       
     
       
    


         
        
       
      
        
   


        
        
 
         
     

     
  
         
         
 
         
   
         
          
         

         
         
       

 
       
         
        
         
   
         
   
 
    

       
      
     
         
 

 

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 
 
       
 

    
        
         
       



 
 
 
   
 

   
   
 



   
          
      
 
   
        

       
     
         
         

        
 
        
     

      
   
    
         









   
   
       
        
        
       
         
        
        
  

   

        
        
        
      
   
     


       



 
 
 
   
    
   
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
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    

  
   
    






  


  



  

     


 
 
 

  
   
   
  
   
       


 

 



  

    
 
     
  
 

 
 











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





 
          
         
          
         
        
 
           
         
        
 
 
      
        
       
      
        
         
      
 


   

       

 
      
       
       
   
   
 
   
          
  
 

         

        

  

  
 
  

         
       
        

      
        

         
        
         
       

        
       
         
      
        
          

        
   
         
 
         
      
      
 
 
           
    
          
        


 

         
         
        
       
  
         
     
          
        
  

        

  
 
 


         
         
          
       

  
        



          

 

   
      
         
         
 
 

 

         

   
 
  


  




   
 
 
       
        
 













         



      
        
   



  
      
 
 
    
  
          

        
       
         
         
       
         

         
        


 
          
        

          




   
     



 


 









        
 


        
 


 

 
       
       
         
       
        
        
   
      
 
 


   
       
  
           
       

            
        
           
 

 
        

      
         
       
       
      


 


         
    
       

   
        
      

   
     
      

       
   
      
 
        
         
      
   
    
 
         
         
 

 
       
       
 
         
 
   
          

         
        
  
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