Patent ID: 11909264
Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A switched reluctance motor comprising:
a stator, having a plurality of stator poles;
a rotor, having a plurality of rotor poles and a plurality of interpole segments located between the plurality of rotor poles;
wherein each interpole segment of the plurality of interpole segments further comprises a concave void radially aligned with an arcuate flux barrier;
wherein the arcuate flux barrier comprises an inner arcuate flux barrier and an outer arcuate flux barrier;
wherein the inner arcuate flux barrier further comprises a first inner arcuate surface and a first outer arcuate surface, wherein the outer arcuate flux barrier further comprises a second inner arcuate surface and a second outer arcuate surface and wherein the concave void is bounded by an exterior arcuate surface;
wherein the first inner arcuate surface, the first outer arcuate surface, the second inner arcuate surface, the second outer arcuate surface and the exterior arcuate surface are defined by an equation:, r
   ⁡
   (
   θ
   )
  
  =
  
   
    (
    
     
      D
      shaft
     
     2
    
    )
   
   ·
   
    
     
      C
      +
      
       
        
         C
         2
        
        +
        
         4
         ·
         
          
           sin
           2
          
          (
          
           p
           ·
           θ
          
          )
         
        
       
      
     
     
      2
      ·
      
       sin
       ⁡
       (
       
        p
        ·
        θ
       
       )
      
     
    
    p
   
  
 

where:
p is a machine pole pair number;
Dshaft is a shaft diameter;
r is a radius;
θ is an angle in polar coordinates; and
C is a constant value for a center line of the rotor;

the exterior arcuate surface has a first set of parameter values:
θ1=0.38-1.18 radians; and
C1=9.1975;

the second outer arcuate surface has a second set of parameter values:
θ2=0.37-1.2 radians; and
C2=8.6794;

the second inner arcuate surface has a third set of parameter values:
θ3=0.32-1.25 radians; and
C3=6.5448;

the first outer arcuate surface has a fourth set of parameter values:
θ4=0.29-1.28 radians; and
C4=5.9532; and

the first inner arcuate surface has a fifth set of parameter values:
θ5=0.28-1.3 radians; and
C5=4.7081.