ESCUELA SUPERIOR POLITÉCNICA DEL LITORAL Faculty of Electrical and Computer Engineering

COURSE SYLLABUS Power Electronics II

1. CODE AND NUMBER OF CREDITS CODE FIEC03152 NUMBER OF CREDITS: 4 Theoretical: 4 I Practica!: O

2. COURSE DESCRIPTION

The main objectiveof this courseis the studyand analysisofchoppers(DC/DC converters): topologies, current and voltage commutation, quadrantsof operation,continuous and discontinuousconduction, modulation techniques, torque and speedcontrolofDC motors.Inverters(DC/AC converters): single and three phasetwo-levelvoltage source inverters: topologies, PWM and space vector modulation techniques. Three-phasetwo-levelcurrent source inverters. Three phase multilevelinverters: diode neutral pointdiode clamped, flyingcapacitor, cascadedHbridgesand applications inmedium voltage drives. Resonant pulseinverters. Matrix inverters(AC/AC converters). Fourier and harmonics analysisfor power converters. This courseemphasizes the use ofmodern toolsfor programming, simulation, analysis andcomputer aideddesign(MATLAB-Simulink-SimPowerSystem andSPICE) in the control ofpower converters.

3. PRE-REQUISITES AND CO-REQUISITES

PRE-REQUISITES FIEC03129 POWER ELECTRONICS I FIEC00166ELECTRIC MACHINERY II

CO-REQUISITES

. CORE TEXT AND OTHER REQUIRED REFERENCES FOR THE TEACHING OF THE COURSE

CORE TEXT 1. Author: Muhammad H. Rashid. Power Electronics: Circuits, Devices and Applications"

Third edition 2004, Pearson-Prentice Hall.

REFERENCES 1. Autor: Mohan, Undelandand Robbins "Power Electronics: Converters, Applications and Design" Third Edition, Wiley

2. Author: Alberto Larco "Power Electronics II Guiding Material"

2012, FIEC-ESPOL.

5. COURSE LEARNING OUTCOMES

At the end of the course, the student will be able to: 1.Understandthe operationofDC/DC converters(choppers), design and selectDC/DC convertersfor industrial applications. 2.Understandthe operationofDC/AC converters(inverters), single and three phase, design and selectDC/AC convertersfor industrial applications. 3.Understandthe operationofAC/AC converters(matrix inverters), design and selectAC/AC convertersfor industrial applications. 4.Identify the modulation techniquesemployed inthe designof differenttopologiesofpower converters: DC/DC, DC/ACandAC/AC and analyzenew techniques usedinpower converters. 5. Utilize modern tools for programming, simulation and analysisofpower converters. 6.Performharmonic analysisand figures ofmerit ofDC/DC converters, DC/ACandAC/AC. 7.Understand therole ofPower Electronicsin the efficientuse ofelectricity and itsimportance in the developmentof newtechnologies for industrial applications,as well asits importancein the fieldof renewable energy andhybrid vehicles.

6. COURSEPROGRAM

L CHOPPERS (DC/DC CONVERTERS) (12 hours) • Introductionand application fieldsofchoppersin the various sectorsofthe Ecuadorian industry. • General Classification. • Class A Chopper: power circuit analysis; continuous and discontinuous conduction; current and

voltage commutation; design techniques; selection ofcomponentsand protections; circuitdesign techniquesto generatemodulation signals; torqueand speedcontrolofDCmotor drives.

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• Class B Chopper: power circuit analysis; circuitdesign techniquesofmodulationsignal generationand control.

• ClassCChopper:power circuit analysis; unipolar modulation; two-quadrant operation; circuitdesign techniquesto generatemodulation signals; DCmotor controlwithregenerative braking; applications in subsystemsforhybrid vehicletractionandrenewableenergy generation(wind and solar).

• ClassDChopper: power circuit analysis; circuitdesign techniquesofmodulationsignal generationand control.

• ClassEChopper: power circuit analysis; unipolar modulation; four-quadrant operation; circuit designtechniquesofsignal generationandmodulation; DCmotor controlwithreversingandregenerative braking; positioncontrol systemsusingDCmotors(servo-motors) fedfour quadrantchoppers.

• Programming withMatlabandsimulation with Spice and SimPowerSystem.

II. SINGLE PHASEINVERTERS(DC/ AC CONVERTERS) (12 hours) • Introduction andapplication fieldsofinvertersin the varioussectors of theEcuadorianIndustry. • General classification. • Single phase voltage source inverters: classification and applications. • Two-level Half-bridge topology (one branch): square wave modulation; PWM square wave

bipolar multiple pulse; sinusoidal PWM bipolar multiple pulse; special modulation Techniques. • Two-level Full-bridge topology (two branches): square wave modulation; PWM square wave

single pulse; PWM square wave unipolar multiple pulse; PWM square wave bipolar multiple pulse; sinusoidal PWM unipolar multiple pulse; sinusoidal PWM bipolar multiple pulse; special modulation techniques.

• Three-level Half-bridge topology (one branch): diode neutral point clamped topology; flying capacitor topology; modulation techniques.

• Three-level Full-bridge topology (two branches): diode neutral point clamped topology; flying capacitor; modulation techniques.

• Two-level Full-bridgetopologyconnected in cascade(five levels). • Regenerative inverter operation(PWM rectifierswithvoltage source). • Single phase inverterswithcurrent source: Full-bridgetopology; Regenerativeoperation of

inverter(PWM rectifierswithcurrent source). • Circuitdesign techniquesfor generatingswitching signalswithSPlCEandSimPowerSystem. • Fourier andharmonics analysis withSPlCEandSimPowerSystem simulations.

III. THREE PHASE INVERTERS(DC/AC CONVERTERS) (12 Hours) • Generalclassification and applications. • Three phase voltage source inverters: classification and applications. • Two-level Full bridge topology (three branches): square wave modulation; Modulation for 120

and 180 degree conduction; unipolar sinusoidal PWM (SPWM) modulation; bipolar sinusoidal PWM (SPWM) modulation; unipolar space vector PWM (SVPWM) modulation; special modulation techniques.

• Regenerative inverter operation(PWM rectifierswithvoltage source). • Three phase current source inverter. • Introduction to AC speed motor control systems. • Modulatorsdesign techniqueswithSPlCEandSimPowerSystems. • Fourier andharmonics analysis withSPlCEandSimPowerSystem simulations.

IV. THREE PHASE INVERTERS OF MULTIPLE LABELS (DC/AC CONVERTERS) (8 horas) • General classification and applications. • Diode neutral point clamped topology (NPC): operating principie; Three, four and five-

leveINPCInverter. • Flying capacitor topology: operating principie; three and five-level flying capacitor inverter. • Cascaded H-bridge Topology: operating principie; three and Five-level cascaded H-bridge. • Applications ofmultilevelinvertersinAC drives. • Modulator design techniques with SPICE and SimPowerSysems. • Fourierand harmonics analysis with SPICE and SimPowerSystem simulations.

IV.5. RESONANTPULSECONVERTER(DC/ AC CONVERTERS) • Series resonant inverters • Frequency response of series resonant inverters • Parallel resonant inverters • Class E resonant inverter • Zero-current switching resonant inverter • Zero-voltage switching (ZVS) resonant inverter • Two-quadrant ZVS inverter. • Modulatorsdesign techniqueswithSimPowerSystems.

(6 hours)

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V. MATRIX INVERTERS (AC/AC CONVERTERS) • Topologies. • Bidirectional switching circuit. • Switching strategies. • Control techniques for matrix converters. • Modulators design techniques with SimPowerSystems. • SimPowerSystem harmonic analysis. • Industrial Applications.

(6 hours)

7. WORKLOAD: THEORY/PRACTICE

Twoclass sessionsper weekfortwo hoursper session(56totalhoursper semester)

8. CONTRIBUTION OF THE COURSE TO THE EDUCATION OF THE STUDENT

It is amatterofprofessionaltraininghubinthe mesh of thespecializationof Electronics andIndustrialAutomationand contributesengineeringsciencesto the analysis,design and dimensioning ofpower converters forindustrial applications, enhancedwithmodern toolsandprogrammingcomputeraided simulation.

BASIC TRAINING PROFESSIONAL TRAINING

SOCIAL SKILLS DEVELOPMENT

X

9. THE RELATIONSHIP BETWEEN THE LEARNING OUTCOMES OF THE COURSE AND THE LEARNING OUTCOMES OF THE DEGREE PROGRAM

LEARNING OUTCOMES OF THE DEGREE PROGRAM*

CONTRIBUTIO N (High,

Medium, Low)

LEARNING OUTCOMES

OF THE COURSE**

THE STUDENT MUST:

a) An ability to apply knowledge of mathematics, science and engineering.

High 1, 2, 3, 6 Mathematicalanalysis and solutionsforpowerconvertersvariablesan d apply the techniquesofFourierharmonicanalysisand figures ofmerit ofthe power converters.

b) An ability to design and conduct experiments, and to analyze and interpret data

High 5 Design, analyse e interpret data collected from simulations of modulation techniques for different power conversion system topologies.

c) An ability to design a system, component or process to satisfy realistic constraints.

Medium 5 Tasksto simulate anddebug applicationswithpower conversionsystemsDC/DCandDC/ ACunderrealistic constraints.

d) An ability to function on multidisciplinary teams.

Medium 1, 2, 3, 4, 5 Tasks to analysecase studiesofengineering solutionsinvolvinggroups of threestudents.

e) An ability to identify, formulate and solve engineering problems.

Medium 1, 2, 3, 4, 5 Tasks to analysecase studiesofengineering solutionsinvolvinggroups of threestudents.

f) An understanding of ethical and professional responsibility.

Low

g) An ability to communicate effectively.

Low

h) A broad education necessary to understand the Impact of engineering solutions in a social, environmental, economic and global context.

Low

i) A recognition of the need Medium 7 Taskswithcurrentresearch topicsin the

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COURSE SYLLABUS POWER ELECTRONICS II

for, and an ability to engage in life-long learning.

area ofapplication ofconverterson modern equipmentwith advanced technology.

j) A knowledge of contemporary issues.

Low

k) An ability to use the techniques, skills, and modern tools necessary for engineering practice.

Medium 5 Tasksto usemodernprogrammingtoolsandcomput eraided simulation: SPICE, MATLAB, Simulink-SimPowerSystem.

I) Capacity to lead, manage and undertake projects.

-- O

10. EVALUATION IN THE COURSE Evaluation activities

Exams 60 Tests Homework/tasks 25 % Projects Laboratory/Experiments Class participation Multiplier task Visits 5 0/0 Seminar with project 10 %

11. PERSON RESPONSIBLE FOR THE CREATION OF THE SYLLABUS AND THE DATE OF ITS CREATION

Created by

Damián Larco Gómez Date

12. APPROVAL

ACADEMIC SECRETARY OF THE ACADEMIC DEPARTMENT

DIRECTOR OF TECHNICAL ACADEMIC SECRETARY

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13. VALIDITY,OrrHE SYLLABUS

RESOLUTION OF THE POLYTECHNIC BOARD: 13 —12 -343

DATE: 2'013-12-12

1

V.

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