Patent ID: 11933849
Assignee: DELTA ELECTRONICS, INC.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 5:
6. The inductance detection method according to claim 5, further comprising:
obtaining a second equation through the dq-axes signal, the motor feedback signal and the stator resistance, wherein the second equation is:, v
     q
     *
    
    -
    
     
      R
      s
     
     ⁢
     
      i
      q
     
    
   
   =
   
    
     
      L
      q
     
     (
     
      i
      q
     
     )
    
    ⁢
    
     d
     dt
    
    ⁢
    
     i
     q
    
   
  
  ,
 

where vq* is a q-axis voltage component of the dq-axes signal, Rs is the stator resistance, iq is the q-axis current component of the motor feedback signal, Lq is the q-axis inductance of the reluctance motor; and
integrating and shifting a left-hand sides and a right-hand side of the second equation to obtain a second curve of the q-axis inductance.