lect8 - Lecture 8 - EE743 Lecture 8 - EE743 Direct Current...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Lecture 8 - EE743 Lecture 8 - EE743 Direct Current (DC) Machines - Part II Professor: Ali Keyhani Professor: Ali Keyhani 2 Shunt-connected DC Machine DC Machines 3 DC Machines The dynamic equations (assuming r fext =0) are: f af r a a la a a a a f ff f f f i L e dt di L i r e V dt di L i r V = + + = + = Where L ff = field self-inductance L la = armature leakage inductance L af = mutual inductance between the field and rotating armature coils e a = induced voltage in the armature coils (also called counter counter or back emf back emf ) 4 DC Machines ) ( ) 1 ( : ) 1 ( : r p m L e a a a a a a aa a f af r a a la a a a a f f f f f ff f f ff f f f J B T T e i r V r L i L e dt di L i r e V winding armature the For i r V dt d p r L dt di L i r V winding field the For + =- + + = = = + + = + = = = + = 5 DC Machines - Shunt DC Machine Shunt DC Machine Time-domain block diagram The machine equations are solved for: 1 1 1 G V p r i f f f f = + = ( 29 2 1 1 G i L V p r i f af r a a a f =- + = ( 29 f a af e L e m r i i L T G T T B p J = =- + = 3 1 6 Time domain block diagram DC Machines - Shunt DC Machine Shunt DC Machine G 1 G 3 G 2 L af X X r i a i f i f i a +- +- V a V f V f 7 State-space equations DC Machines - Shunt DC Machine...
View Full Document

Page1 / 23

lect8 - Lecture 8 - EE743 Lecture 8 - EE743 Direct Current...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online