Patent ID: 11901828
Assignee: ZHEJIANG UNIVERSITY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A bidirectional Capacitance-Inductance-Inductance-Capacitance (CLLC) resonant circuit, comprising a primary side bridge, a secondary side bridge, a primary side resonant capacitor, a secondary side resonant capacitor, a coupled resonant inductor, and a transformer;
wherein the coupled resonant inductor has opposite dotted terminals with the transformer, and a primary side and a secondary side of the coupled resonant inductor are respectively in serial connection with a primary side and a secondary side of the transformer;
wherein the primary side resonant capacitor is connected in series between a port of the primary side bridge and the primary side of both the coupled resonant inductor and transformer, while the secondary side resonant capacitor is connected in series between a port of the secondary side bridge and the secondary side of both the coupled resonant inductor and transformer; and
wherein the coupled resonant inductor and the transformer form a two-port network having port properties defined by following formulas:, v
      1
     
     =
     
      
       
        (
        
         
          L
          mc
         
         +
         
          L
          rc
         
        
        )
       
       ·
       
        
         di
         p
        
        dt
       
      
      -
      
       
        
         (
         
          
           
            L
            mc
           
           N
          
          -
          
           
            L
            rc
           
           
            N
            r
           
          
         
         )
        
        ·
        
         
          di
          s
         
         dt
        
       
       ⁢
          
       and
      
     
    
   
  
  
   
    
     
      
       v
       2
      
      =
      
       
        
         (
         
          
           
            L
            mc
           
           N
          
          +
          
           
            L
            rc
           
           
            N
            r
           
          
         
         )
        
        ·
        
         
          di
          p
         
         dt
        
       
       -
       
        
         (
         
          
           
            L
            mc
           
           
            N
            2
           
          
          +
          
           
            L
            rc
           
           
            N
            r
            2
           
          
         
         )
        
        ·
        
         
          di
          s
         
         dt
        
       
      
     
     ;
    
   
  
 

where v1 and v2 respectively indicate a primary side port voltage and a secondary side port voltage of the two-port network, ip and is respectively indicate a primary side resonant current and a secondary side resonant current, Lrc indicates an inductance value of the coupled resonant inductor, a turn ratio of the primary side Nr to the secondary side of the coupled resonant inductor is Nr:1; Lmc is an inductance value of a magnetic inductor of the transformer, and a turn ratio of the primary side and the secondary side of the transformer is N:1, and N is a ratio of primary side coil turns Np of the transformer to secondary side coil turns Ns of the transformer, where Np and Ns are integers greater than or equal to one.