lect27

# lect27 - Lecture 27 ECE743 3-Phase Induction Machines...

This preview shows pages 1–7. Sign up to view the full content.

Lecture 2 Lecture 2 7 7 - E - E C C E743 E743 Professor: Ali Keyhani Professor: Ali Keyhani 3-Phase Induction Machines Reference Frame Theory – Part II

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2 abc Reference Frame Fig. 1 A two-pole, 3-phase symmetrical induction machine.
3 abc Reference Frame Fig. 1 A two-pole, 3-phase symmetrical induction machine.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
4 abc Reference Frame Winding arrangement for a 2-pole, 3-phase, wye- connected symmetrical induction machine is shown in Fig.1. Stator windings are identical, sinusoidally distributed windings, displaced by120 ° , with N s equivalent turns and resistance r s . Consider the case when rotor windings are also three identical sinusoidally distributed windings, displaced by120 ° , with N r equivalent turns and resistance r r .
5 In abc reference frame, voltage equations can be written as s: denotes variables and parameters associated with the stator circuits. r: denotes variables and parameters associated with the rotor circuits. abc Reference Frame [ ] [ ] cr br ar T abcr cs bs as T abcs abcr abcr r abcr abcs abcs s abcs f f f f f f f f p i r V p i r V = = + = + = ) ( , ) ( λ

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
6 L ls and L ms are, respectively, the leakage and magnetizing inductance of the stator windings. L lr and L mr are, respectively, the leakage and magnetizing inductance of the rotor windings. abc Reference Frame = abcr abcs r T sr sr s abcr abcs i i L L L L ) ( λ , 2 1 2 1 2 1 2 1 2 1 2 1
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 07/17/2008 for the course ECE 743 taught by Professor Keyhani during the Spring '08 term at Ohio State.

### Page1 / 14

lect27 - Lecture 27 ECE743 3-Phase Induction Machines...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online