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Relation Between Torque & Slip of Induction Motor

PRESENTED BY

DR. SHAIKH MOHAMMED SUHEL

DEPARTMENT OF ELECTRICAL ENGINEERING

R.N.G.PATEL INSTITUTE OF TECHNOLOGY, BARDOLI

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A

Presentation

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Torque Equation

  • Gross mech o/p = (1-S) × rotor i/p

 

 

 

 

 

 

 

  • Rotor input is also know as synchronous watt
  • A 3-ø I.M is said to be developed one synchronous watt torque if one watt of power is transferred from stator to rotor at synchronous speed

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Torque Equation

  • Tg ∝ E22 ∝ E12 ∝ V12

 

 

 

 

 

 

 

 

 

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Torque Equation

  • Tg ∝ E22 ∝ E12 ∝ V12

 

 

 

 

 

  • At low value of slip (SX2)2 << (R2)2

 

 

  • At large value of slip (SX2)2 >> (R2)2

 

 

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Relation between Torque and Slip

  • At low value of slip (SX2)2 << (R2)2

 

 

 

S=0

low value of slip

Tg=0

Speed

Slip

S=1

 

  • At large value of slip

(SX2)2 >> (R2)2

 

 

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