EE_365_200708FA_homework_08_solution

EE_365_200708FA_homework_08_solution - 1. a. i. ii. The...

Info iconThis preview shows pages 1–3. 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
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1. a. i. ii. The angular position of the reference frame is relative to the d-axis instead of the q-axis. The order of the transformed variables is different: sd sq instead of sq sd. EE 365 Fall 2007 b. sq axis sb axis sin( ) cos( ) cos( ) sd axis sa axis sin( ) isd cos( ) i = sq isa - sin( ) isd sin( ) i = sq isb cos( ) isd cos( ) sin( ) isa i = sq - sin( ) cos( ) isb 1 Homework 08 Solution Jeffrey Mayer 2005-2007. All rights reserved. 2. r = r t isa = 2 I s cos(et + is ) isb = 2 I s sin(et + is ) ira = 2 I r cos((e - r )t + ir ) irb = 2 I r sin((e - r )t + ir ) sb sa EE 365 Fall 2007 sb r sa axis s sa r (0) = r .0 = 0 r (16.66 10-3 ) = 360.9 16.66 10-3 = 6.015 rad = 344.6 sb rb axis sa sb r (33.33 10 ) = 360.9 33.33 10 -3 -3 = 12.03 rad = 689.3 = 329.3 r sa axis s sa sa ra axis r = 344.6 rb axis sb sb r s sa Jeffrey Mayer 2005-2007. All rights reserved. sa axis ra axis r = 329.3 2 Homework 08 Solution 2. (cont.) Standard windings with positive-sequence currents instantaneous phase angle: (et + is ) t =0 = is = -25.9 (et + is ) t =16.6610-3 = (377)(16.66 10-3 ) + is = 2 + is = is = -25.9 (et + is ) t =33.3310-3 = (377)(33.33 10-3 ) + is = 4 + is = is = -25.9 ((e - r )t + ir ) t =0 = ir flux vector is in the direction of the EE 365 Fall 2007 ((e - r )t + ir ) t =16.6610-3 = (377 - 360.9)(16.66 10-3 ) + ir = 0.2863 + ir = 15.37 + ir = 15.37 + 173 = 188.37 ((e - r )t + ir ) t =33.3310-3 = (377 - 360.9)(33.33 10-3 ) + ir = 0.5367 + ir = 30.75 + ir = 30.75 + 173 = 203.75 3 Homework 08 Solution Jeffrey Mayer 2005-2007. All rights reserved. ...
View Full Document

Page1 / 3

EE_365_200708FA_homework_08_solution - 1. a. i. ii. The...

This preview shows document pages 1 - 3. Sign up to view the full document.

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