Patent ID: 11881796
Assignee: ROLLS-ROYCE PLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 0:
1. A method of controlling a permanent magnet synchronous electric machine (PMSM) drive using a Deadbeat Predictive Current Control (DBPCC) scheme, the method comprising:
determining d-axis and q-axis stator current values (id, iq) representative of a measured PMSM current;
determining d-axis and q-axis reference current values (id*, iq*);
based on the stator current values (id, iq) and the reference current values (id*, iq*), determining d-axis and q-axis current correction values (Cd, Cq) according to the equations:, C
      d
     
     (
     k
     )
    
    =
    
     
      η
      
       1
       -
       
        z
        
         -
         1
        
       
      
     
     ·
     
      
       e
       id
      
      (
      k
      )
     
    
   
     
  
  ⁢
  

  
   
    
     C
     q
    
    (
    k
    )
   
   =
   
    
     η
     
      1
      -
      
       z
       
        -
        1
       
      
     
    
    ·
    
     
      e
      iq
     
     (
     k
     ), wherein n is a gain value, and eid and eiq are d-axis and q-axis current errors;
determining corrected reference current values (id**, iq**) as a sum of the reference current values (id*, iq*) and the current correction values (Cd, Cq); and
controlling the PMSM drive using the corrected reference current values (id**, iq**) as reference current inputs of the DBPCC scheme.