orientation electromechanics

7/29/2019 Orientation Electromechanics

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EPPElectrical Power Processing

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OrientationElectrical Power Engineering

Courses and projects in electromechanics

Dr.ir. Henk Polinder


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Electrical Machines and Drives ET4117

1st quarter (September-October)

4 ECTS

Book: P.C. Sen, Principles of electric machines and powerelectronics

Laboratory work: 3 half days


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Electrical Machines and Drives ET4117

Overview over different types of machines and drives.

mechanical loads

Maxwell's equations

- DC machines

- induction machines

- synchronous machines

- switched reluctance machines

- brushless DC machines

- single-phase machines

- recognise

- sketch cross section

- explain principle of operation

- derive voltage equations

- derive torque equations

- steady-state performance

- power electronic converters


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AC Machines ET4121

Third quarter (Feb-March)

4 ECTS

Book: P.C. Sen, Principles of electric machines and powerelectronics

Lecture notes: M.J. Hoeijmakers Modeling AC machines

Laboratory work: 3 half days

Prerequisite: Electrical Machines and Drives

Major part: instructions, presence obliged


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AC Machines ET4121

In lecture:

- the salient pole synchronous machine

- time and space harmonics

- special properties of squirrel-cage machines

In instructions

- Modelling and simulation of the dynamic performance of ACmachines

- Deriving models of AC machines

- Simulations in Matlab Simulink


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Electromechanics for mechatronic systems

ET4245ME / ET4123

Fourth quarter (April-June)

2 ECTS

Lecture notes:

J.C. Compter Introduction to electromechanics

Handout (slides)


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Use the terminology of electromechanics. Use the principles of electric and magnetic circuits

Recognize different types of permanent-magnet machines andderive the voltage equations Recognize magnetic bearings, explain their strength and

weaknesses, calculate magnetic bearing forces Explain what are the important limitations and characteristics of

materials and machines Distinguish between the different construction forms ofpermanent-magnet machines.

Explain which criteria play an important role in choosing amachine.

Explain why linear motor are used Recognise different types of amplifiers and know their strength

and weaknesses

Electromechanics for mechatronic systemsET4245ME / ET4123


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Electrical Drives ET4124

Given by M.J. Hoeijmakers

Fourth quarter (April-June)

4 ECTS

Lecture notes: M.J. Hoeijmakers Modeling AC machines +handouts

Prerequisites

AC Machines (ET4121) and ET4117

Electronic Power Conversion (ET4119)


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1. Electrical drives with DC and AC machines, supplied by powerelectronic convertors.

2. Mechanical systems, digital simulation, thermal effects.

3. Dynamics and control of DC machines.

4. Dynamics and control of induction machines, scalar and vectorcontrol, flux orientation.

Electrical Drives ET4124


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Project examples

Direct drive wind turbines

Ocean wave energy conversion

Renewable energy for developing countries

Automotive applications

Fault tolerant drives for aerospace applications


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Large wind turbines

Source: Bundesverband WindEnergie e.V.


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Example large

wind turbine

REPower

5 MW12 rpm126 m rotor diameter100 m tower

Source: REpower Systems AG, photo: Jan Oelker.


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Example of

generator systemwith gearbox

NEG Micon



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Example of direct

drive generator

Enercon



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Examples


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Direct drive generator types

2446Active material weight (ton)

8.047.88Annual energy yield (GWh)

312447Generator cost (KEuro)

PM excitationElectrical excitation


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Fractional pitch windings

Full pitch distributedwinding-Well-known-Hardly spaceharmonics

Fractional pitchconcentrated winding(modular)-Cheaper-Significant spaceharmonics


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Wind turbine subassembly failure rates (Tavner)


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Hours lost per failure (Tavner)


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Research wind energy

Cheaper generator types

Other winding types

Transverse flux machines

Magnetic bearings

Reliability and fault tolerance

coil

magnet

flux

S

N N

S

S

N

N


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Why ocean wave energy?

Environmental concern

Huge potential:

20-70 kW/m290 GW Europe

1 TW worldwide


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Archimedes Wave

Swing (AWS)


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Linear AWS generator


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Linear generator in AWS


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Measured

quantities


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Renewable energy for developing countries


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Nuna solar car: drive optimization

World Solar Challenge

3000 km in 4 days

100 km/h 2 kW


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Range extender for electric vehicles


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FEM simulations


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Research automotive

Modelling and testing the generator (losses!)

Designing, building and testing the power electronics Comparison of different drive train options


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HISPEM: 200 kW, 45000 rpm

Twelve phase system

Power density power

electronics = 21.8kW/l


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HISPEM fault tolerant

5 or 7 phase

75 kW

60000 rpm


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Research HISPEM

Modelling and testing the generator (losses!)

Modelling, building and testing the power electronics Fault diagnosis and performance during faults

Calculate the reliability (MTBF)

Increasing reliability


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Essays

Future availability of energy: resource and consumption

assessment for the most important energy sources

Resource assessment for the most important renewable energysources and their potential for the future.

Overview of ocean wave energy converter systems

Ways to improve the reliability of wind turbines

orientation electromechanics

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