Patent ID: 11882640
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. The method of claim 2, wherein the first inverter circuit comprises:
a variable capacitor circuit; and
a relay circuit connected to the variable capacitor circuit,
wherein a capacitance value of the variable capacitor circuit is set to Cr,h of the following Equation 1 as a result of opening or closing of a plurality of relays included in the relay circuit., C
      
       r
       ,
       h
      
     
     =
     
      1
      
       
        
         (
         
          2
          ⁢
          π
          ⁢
          
           f
           
            r
            ,
            h
           
          
         
         )
        
        2
       
       ⁢
       
        L
        r
       
      
     
    
   
   
    
     [
     
      Equation
      ⁢
         
      1
     
     ]
    
   
  
 

wherein fr,h is a same value as a frequency of a switching signal input to the first inverter circuit, and Lr is an inductance value of an inductor of the first inverter circuit.