Learning Electric Machine Design

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Oct 8, 2012 ... The SPEED Design Book. # How to design and optimize machine geometry and dimensions, including tolerances. # Frequent interjections of.
SPEED Workshop

Electric Machine Design using SPEED Prof. Tim Miller



Training in latest versions for SPEED users



Introduction to SPEED for new users



Special focus on machine design

ELECTRIC MACHINE DESIGN using SPEED

OCTOBER 8-12, 2012

NEW design book

At the Gideon Putnam Hotel Saratoga Springs, N.Y., USA

ELECTRIC MACHINE DESIGN USING SPEED

Tim Miller Emeritus Professor Founder of SPEED IEEE Tesla Award Recipient, 2008

—will be introduced and used at this workshop

Contact Sherie@ masoft-flux.com for registration details

www.speedlab.co.uk

The SPEED Design Book ELECTRIC MACHINE DESIGN

# Instead of course notes, this time a complete book # You get course notes too, with the SPEED software as free PDF files

using SPEED

TimMiller Emeritus Professor Founder of SPEED IEEE TeslaAward Recipient, 2008

www.speedlab.co.uk

# How to design and optimize machine geometry and dimensions, including tolerances # Frequent interjections of "design wisdom" # Hundreds of rules and guidelines

# System configuration # How motors work with inverters and electronics # Just enough theory to explain what we're doing

# Windings # Classic formulas for estimating and checking

Overview # Aims — Learn how to design modern electric machines with SPEED — Discover new features in SPEED # What type of electric machine? — Brushless permanent-magnet N All types : BLDC, BLAC, IPM, SPM, Radial and Axial-flux N Special attention to generators and regeneration — Wound-field AC generators — Induction machines — Synchronous reluctance machines — Switched reluctance machines — Drives & Controls are covered for all machine types — Generating operation covered for all machine types The SPEED software system # Why is this type of course important? P We're on a historic boundary between classical analysis and modern numerical methods P We need to understand how these are related and how to make them work together # Is this course about design, or theory, or SPEED software? P The SPEED software is used to practice design and illustrate theory P It works for new engineers as well as experienced engineers # Who presents it? — Prof. Tim Miller, FIEE, founder of SPEED — In the industry since 1967 # Will I get a SPEED training certificate? — Yes # What kind of engineer is this course designed for? — Electrical and mechanical engineers involved in design and manufacturing electric machines will WINDING EDITOR

NUMERICAL ANALYSIS

(PC-WFC)

280mm

30mm

24 strips 700 T coils

Epstein square

Scripting/ Automation Manual repetition

Concept

FC-IVCONTROLLER

MACHINE INVERTER

Gatedrives

49 0 9

Current

LOAD INVERTER

6 00 3

SPEED Laboratory FCIV

1

3

2

4

SPEED Reference

Motor performance requirement

20 1 0

Resolver

TORQUE

SPEED

Test Machine

Load Machine

Ldc

VCdc

Q1

D3

Q3

Q4

Q6

Mfg Database

Q2

D4

R_s

D6

D2

iRec

iB

iA

Motor performance data

PERFORMANCE GRAPHS

Leads

Rac

vAB

v1

A

B

i1

i2

C

i3

Lph

Rph

e1

Design sheet + graphs

iC

Lac

e2

e3

WAVEFORMS

Frame



Numerical Analysis

DESIGN SHEET

D5

Q5

Cdc

DRIVE CIRCUIT

Performance calculation

Result

D1

Vt

ICdc

0

Rdc

Design Parameters

iDC

iLdc

Vs

Material property data

get instruction that is directly useable in their work Managers, control engineers, power-electronics engineers will also get a deep insight

Learning Electric Machine Design P Shortage of electric machine engineers  Few universities teach this subject  experienced engineers are retiring

Learning for work in the factory

P New types of motor — difficult to calculate P Electronics is included P Textbooks are written by academics, not designers Ivory tower Fundamental theory

# Old system has long ago run dry # The drips have stopped # This does not work anymore

# We can't find the talent # So what can we do? — Forget the search for specialists — Get good people in any discipline — Learn on the job, in the factory — Keep the learning experience going — Do all this with SPEED

Motor engineer Motor engineer Motor engineer

# # # # # # # # # # #

SPEED is designed to meet this need... Excellent training tool The real thing, not only a training tool Proven on thousands of products Computer-based, as it must be Improves and grows continuously Can be used to communicate Is extremely efficient Improves productivity, consistency Detailed documentation Can be used by mechanical engineers and control engineers as well

Program # MONDAY # October 8 # Brushless PM machines

# TUESDAY # October 9 # Brushless PM

# WEDNESDAY # October 10 # Synchronous & switched reluctance

machines

# THURSDAY # October 11 # Induction and wound-field machines

# FRIDAY # October 12 # DC and AC Commutator motors

# Design session: # Brushless SPM motor

# Design session: # IPM motor + control

# Design session: # Synchronous reluctance motor

# Design session: # Induction motor

# Design session: # PM DC brush motor

# No. of slots & poles # Basic sizing # Winding design # EMF calculation # MMF harmonic effects # Advanced loss calculations including harmonic losses, slotmodulation losses, magnet losses. Elements table method for iron losses. # Cogging torque # Drive & current control # Temperature-rise calculations

# IPM geometry — Magnet material requirements # Reluctance torque # Sinewave drive # Phasor and voltage locus diagram # Flux-weakening # Inductance # Saturation effects. # i- psi GoFER and embedded FE solver # Demagnetization calculations # Drive & current control # Temperature-rise calculations

# # # # #

# Equivalent circuit # Torque/speed curve # Control of efficiency and power-factor # Doubly-fed machines # Single-phase motors

# Machine geometry # Equivalent circuit # Torque/speed curve & performance # Commutation # 3rd- brush motors

# Design session: # Switched reluctance motor

# Design session: # Wound-field AC generator

# Design session: # Universal motor

# SR geometry # Maximising saliency # Performance comparison with AC motors # Drive & current control

# Machine geometry # OCC and SCC # Excitation control; IEEE & ASA methods # Transient and subtransient effects: fault calculations

# Equivalent circuit # Torque/speed curve & performance # Control of efficiency and power-factor # Commutation; effect of brush-shifting

Synchrel geometry Maximising saliency Comparison with IPM Loss calculations Drive & current control