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ECE 522: Induction Machines

Fall 2009



Homework Solutions

HW 01
HW 02
HW 03
HW 04
HW 05
HW05a Solution (xmcd)
HW05b Solution (xmcd)
HW 06
Two Winding Toriad w/ IC (mdl)
HW 07
HW 08
HW 09

Session Materials


Session #

Topics

Overheads

Links to Resources

Links to Assignments

Review

Exam Review

Will be emailed to you.

Will be emailed to you.

None

25

Bus Transfer

S25 Overheads (pdf)

Bus Transfer (xmcd)

None

24

Constant Flux Linkages
Constant Rotor Flux Linkages( N&L 4.9 )

S24 Overheads (pdf)

Constant Flux Linkages (xmcd)

None

23

Course Project
Eigen Value Analysis
Short Circuit

S23 Overheads (pdf)

Project OC (pdf)
Project EO (pdf)

HW 7
Given during this session
Due
OC: Tues., Nov. 17 at 2300 hrs
EO: Tues., Nov. 31 at 2300 hrs

22

Per Unit
Unloaded I/M Short Circuit

S22 Overheads (pdf)

Short circuit, unloaded (xmcd)
Short circuit, loaded (xmcd)
Time constants (xmcd)

None

21

Constant Speed Eigen Analysis
Maximum Capability, Constant kVA Region

S21 Overheads (pdf)

None

None

20

Direct FOC
Maximum Capability, Constant Torque Region

S20 Overheads (pdf)

Pre-Simulation FOC Transient (m)
FOC Transient (mdl)
Plotting (m)

None

19

FOC Transients
Ignoring Stator Dynamics

S19 Overheads (pdf)

Two Winding Toriad w/ IC (mdl)
FOC Transient (mdl)

None

18

Simple Toriad Transient

S03 Overheads (pdf)

HW05a Solution (xmcd)
HW05b Solution (xmcd)
Two Winding Toriad (mdl)

HW 6
Given during this session
Not to be collected.

17

Summary FOC
Simple Toriad Transient
sigma, sigma L_s, sigma L_r

S17 Overheads (pdf)

FOC Transient Equation Summary (xmcd)
FOC SS Equation Summary (xmcd)
Simple Toriad Transient (xmcd)
Sigma (pdf)
Toriad Equation Development (xmcd)

HW 5
Given during this session
Not to be collected.

16

FOA and FOC ( N&L 6.1 & 6.2 )

S03 Overheads (pdf)

Field Orientation Eq. Development (xmcd)
FOA (xmcd)
FOC (xmcd)

None

15

Airgap Flux

S15 Overheads (pdf)

Single Phase Field (xmcd)
Rotating Field (xmcd)
Constant Toque, FOA (xmcd)

None

14

HW 4 Discussion

S14 Overheads (pdf)

Transform BSS PS (xmcd)
BSS PS (xmcd)
Transform Neq Seq (xmcd)

None

13

BSS PS IM
IM Torque vs s
IM Peak Torque
IM Starting Torque

S13 Overheads (pdf)

Performance Eq. (pdf)
Torque vs s (xmcd)
Peak Torque (xmcd)
Staring Torque (xmcd)

None

12

Turns Ratio

S12 Overheads (pdf)

Matlab & Simulink HO (pdf)
OCStator Simulink s11a (mdl)
OCStator Simulink s11b(mdl)
OCDFIG INIT s11c (m)
OCDFIG INIT s11e(m)
OCStator Simulink s11g (mdl)

None

11

MatLab & Simulink

S11 Overheads (pdf)

None

None

10

Transients
Numerical Simulation

S10 Overheads (pdf)

RL Simulink Diagram (pdf)
RL Plot (pdf)

HW 04 (xmcd)
Due
OC: Tues., Sept. 29 at 2300 hrs
OC: Tues., Oct. 13 at 2300 hrs

9

Motor & Generator Conventions
Numerical Example

S09 Overheads (pdf)

Motor Convention a (xmcd)
Motor Convention b (xmcd)
Mixed Convention (xmcd)
Generating (xmcd)

None

8

Internal Voltage
DFIG Model

S08 Overheads (pdf)

OC BSS DFIG Example (xmcd)

None

7

Session 6 Review and Corrections
Numerical Examples with MathCAD

S07 Overheads (pdf)

BSS DFIG w/ Stator Open Circuit (xmcd)

None

6

Power in dq variables ( N&L 2.10 )
Power Examples
DFIM

S03 Overheads (pdf)

None

None

5

"I/M" with DC Rotor Currents

S05 Overheads (pdf)

None

None

4

qd0 Flux Linkage Equations
Complex Variable Models

S04 Overheads (pdf)

Rotor Transformation (pdf)
abc inductances (pdf)

None

3

Complex Vector Variables ( N&L 2.5 )
Complex Variable Models ( N&L 2.6 )

S03 Overheads (pdf)

More Stator Transformation (pdf)

TBP

2

I/M Inductances ( N&L 2.4 )
Reference Frame Theory ( N&L 2.8 )

S02 Overheads (pdf)

Trig. Identities (pdf)
Paper I/M (pdf)
Paper Stator (pdf)
Paper rotor (pdf)
Stator Transformation (pdf)

None

1

Introduction

S01 Overheads (pdf)

Syllabus (pdf)
Guidelines (pdf)
I/M Physical Eq.'s (pdf)

HW #01(pdf)

Instructor

Joseph D. Law
BEL 208
Phone: 885-7230
JoeLaw@ece.uidaho.edu