ESCUELA SUPERIOR POLITÉCNICA DEL LITORAL Faculty of Electrical and Computer Engineering

COURSE SYLLABUS Power Electronics Lab

1. CODE AND NUMBER OF CREDITS CODE FIEC03145 NUMBER OF CREDITS: 3 Theoretical: 0 1 Practical: 3

2. COURSE DESCRIPTION

The main objectiveof this course isthe experimental analysisof differentpower conversionsystemsAC/DC, AC/AC, AC/DC/ACsingle and three phase powered: experimental analysis ofelectroniccircuitsfiring pulsegenerationandmodulationharmonic measurementand figures ofmerit,the study of systemsoftorqueand speedcontrolofDCandACmotorsinopen and closed loop: parameter programming, optimization ofPlDcontrollers, analysis of efficiency,power factor andharmonics; starting systemsinductionmotorsAC / AC converters; programmingmethodswithHMEndustrial drivesandcomputer assistedprogramming, intensivemeasurement equipmentcommonly usedin the area ofpower electronicsandmotor drive. Thiscourse emphasizesthe useof modem toolsofprogramming, modeling and computeraided simulation(SPICE andSimPowerSystem) to compare the results obtainedwithexperimentalanalysis.

3. PRE-REQUISITES AND CO-REQUISITES

PRE-REQUISITES FIEC01347 FIEC03251 FIEC03152

ELECTRONICS LAB B ELECTRIC MACHINERY LAB POWER ELECTRONICS II

CO-REQUISITES

4. CORE TEXT AND OTHER RE UIRED REFERENCES FOR THE TEACHING OF THE COURSE CORE TEXT 1. Alberto Larco

"Power Electronics Lab Guide" 2012, FIEC-ESPOL. REFERENCES 1. Alberto Larco "Power Electronics I Guiding Material" 2012, FIEC-ESPOL.

2. Alberto Larco "Power Electronics II Guiding Material" 2012, FIEC-ESPOL. 3. Muhammad H. Rashid, "Power Electronics: Circuits, Devices and

Applications." Third edition, 2004, Pearson-Prentice Hall.. 4. Dr. Firuz Zare, Youtube Chanel: "Laboratorio Electrónica de Potencia-

ESPOL" (Lab and projects Videos).

S. COURSE LEARNING OUTCOMES

At the end of the course, the student will be able to: 1. Usesafely andoptimallyspecializedmeasuring instrumentsfor the area ofpower conversionsystems. 2. Perform tests andharmonicanalysisandexperimentalfigures of meritofpower

conversionsystemsAC/DCandAC/AC. 3. Perform programmingandparameter inputthrough theHMIormodern analyticaltoolsand

programmingcomputer assistedparameters; intorquecontrol systemsandspeedDC and AC motors. 4. Become familiarwith the devices,design techniquesandcontrol signalsof theblocksfiring

pulsegenerationemployeesfor variouspowerconverter topologies: AC/DCandAC/AC. 5. Become familiarwith the techniques oftuningPlcontrollersforcurrent and speedcontrolsystemsand

speedtorqueDC motor. 6. Experimentallyanalyzethe optimizationof parameters incontrol loopswithPI controllersindustrial processes. 7. Understanding therole ofpower electronicsintheefficientuse ofelectricity andthe importance ofresearch and

developmentof new technologies forpower convertersused in industrial applications.

. COURSEPROGRAM I. PRACTICE No. 1:FAMILIARIZATIONWITHMEASURING INSTRUMENTSAND EQUIPMENTUSED

INPRACTICE. (3 hour session.) • Indirect measurementofinductance andcapacitanceby meansof the phase anglebetween voltage and currentinRLandRCload(voltage and current waveforms). • Gettingtachometerscurves. DCVoltagevsRPMof aDCtachometer Frequencyvs.ACRPMtachometer.

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• Gettingcurrentversusspeedcurvesarmature of aseparately excitedDC motorfedwithconstantarmature voltage. Using theeddy currentbrake. • Gettingvelocity curvesversusstator currentof athree phaseinduction motorwithsquirrel cage. • Obtainingcurrent and voltageoscillogramstransientphase inductionmotorwithsquirrel cage. Usingvisualization softwareoscilloscopes withPCinterfacepair. • Measurement and analysis ofharmonics inthree-phaseuncontrolledrectifiers.

II. PRACTICE No. 2: LINE COMMUTATED SINGLE PHASERECTIFIER (MAWDSLEY'S educational equipment.) (3 hour session.)

• AC-DC convertersingle phasehalf wavecontrolled. • AC-DC ConverterSingle Phasecontrolledfull wavecenter-tapped transformer. • Single-phaseAC-DC converterfull wave bridgetypesemi-controlled • Single-phaseAC-DC convertertypefull wave bridgefully controlled.

III. PRACTICE No. 3: DC MOTOR SPEED CONTROL SYSTEMS BASED ON SEMICONTROLLED SINGLE PHASE RECTIFIERS FOR OPERATION IN ONE QUADRANT (TERCO MV4200, educational equipment.) (3 hour session.)

• Identifying the basic block diagram of the electronic control of the team: Circuits of power: power armor with semi-controlled rectifier single phase bridge type and protections, field supply single phase uncontrolled rectifier bridge type, additional inductance armature for DC operation. Pickup circuit feedback signals: voltage and current collection of armor. Reference adjustment circuit dual polarity. Firing circuit: pulse generator synchronizer and insulated trigger. Current PI controllers and speed. • Trip circuit analysis and reference block. Change the shooting angle by adjusting the reference to vary the speed of the DC motor in open loop. Taking oscillograms in different parts of the trip circuit and contrast with those obtained in the simulations with SPICE. • Control current (torque). Tuning of the proportional and integral gains of the PI controller current sudden changes of torque applied to the motor shaft (constant current and variable speed). • Tachometer speed control with inner current loop. Tuning of theproportional and integral gains of the PI speed controller to sudden changes in torque applied to the motor shaft (constant speed and variable current). Change in the maximum current levet applied to the current PI controller. • Speed control by IxR compensation method with current inner loop. Tuning of the proportional and integral gains of the PI speed controller to sudden changes in torque applied to the motor shaft (constant speed and variable current). Change in the maximum current level applied to the current PI controller. Setting method of compensation IR(MAWDSLEY'S educational equipment.) • Speed control with tachometer feedback and current inner loop. The constants of the PI controllers are speed and current tune internally.

IV. PRACTICE No. 4: DC MOTOR SPEED CONTROL SYSTEMS BASED ON SINGLE PHASE FULLY CONTROLLED RECTIFIERS FOR FOUR QUADRANT OPERATION (Computer-based education variable speed drive FINCOR 2230MKII.) (3 hour session.)

• Identifying the basic block diagram of the electronic control of the team: Circuits of power: power armor with two fully controlled rectifier single phase bridge connection types and protections anti parallel, field supply single phase uncontrolled rectifier bridge type. Generation circuit supply voltages and control sections bipolar reference. Synchronizer circuit and pulse generator insulated trigger. Pickup circuit feedback signals: current collection by resistive shunt isolation block (current scaling) and armature voltage differential amplifier and scaling bridges. Control circuits acceleration and deceleration.Scaling circuit for analog tachometer.Voltage monitoring circuit and armature current.Circuit tachometer loss detection for automatic change control method IR. Current PI controllers and speed. • Control speed in four quadrants using the tachometer feedback. Line current oscillograms and armor to determine changes in diese variables during regenerative braking. • Determination of the polarity of the tachometer Variant 1: Correct polarity. Variant 2: Wrong polarity. Variant 3: Offline tachometer (control IxR). • Speed control with the method IR. LxR potentiometer calibration for optimum drive speed regulation. • Analysis of engine braking rates charged by power waveforms and DC motor speed. Option 1: No braking. Variant 2: Dynamic braking. Variant 3: Regenerative braking. • Forward pulse (JOG). Calibration of the fast forward pulse. • Outputs for monitoring voltage and armature current.

V. PRACTICE No. 5: LINE COMMUTATED THREE PHASE RECTIFIERS (MAWDSLEY'S Educational Equipment.) (3 hour session.)

• Three-phase AC-DC converter half-wave controlled 3 pulses. • AC-DC Converter half-wave phase-controlled 6-pulse (with power six phases: connection to phase transformer center tap.) • Three-phase AC-DC converter full wave bridge type semi-controlled.

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• Three-phase AC-DC converter full wave fully controlled bridge type Variations in the experiments: Loads: R, RL load RL load and free passage diode. • Variable speed DC motor with AC/DC converter three phase full wave. K.:1) obtaining constant DC motor and experimental verification for different values of speed. Measurements: Angles shooting, driving and extinction DC voltages and currents and RMS Voltage and current waveforms Power factor and THD Harmonic analysis.

VI. PRACTICE No. 6: DC MOTOR SPEED CONTROL SYSTEMS BASED ON THREE PHASE FULLY CONTROLLED RECTIFIERS (Computer-based education variable speed drive DC motor MENTOR MP.) (3 hour session.)

• Getting to the electrical drawings and component parts of the equipment on and off procedure analyzing relay logic panel. • Drive for lighting panel programming interface power converter. • Initialization of the drive to get factory settings and parameters stored in the EEPROM of the drive. Connection to CT-SOFT software for performing the experiments. • Implementation procedure of the panel along with the engine and automatic tuning of the PI controllers power and speed. Shutdown Procedure electrical panel. • Speed adjustment by different methods. Option 1: External reference (potentiometer.) Version 2: Programming Interface (keypad.) Variant 3: Fixed speed (pad-ref). Voltage and current waveforms of three-phase power and armor for variant 3 with different levels of DC motor load. • Variable speed DC motor in open loop. • Tachometer speed control using DC. • Speed control by the compensation method IR. • Automatic selection of speed (preset speeds.) • Forward pulse (jog.) • Recording and parameters into the smart card (Smartcard.)

VII. PRACTICE No. 7: LINE COMMUTATED AC/AC CONTROLLERS (MAWDSLEY'S educational equipment.) (3 hour session.)

• Single-phase AC-AC controller unidirectional (R load and RL.) • Single-phase AC-AC controller bidirectional (R load and RL.) • Three-phase AC-DC converter unidirectional (R and RL load.) • Three-phase AC-DC Converter bidirectional (R and RL load.) • Soft start induction motor and making voltage and current waveforms at the load Measurements: Angles shooting, driving and extinction DC voltages and currents and RMS Voltage and current waveforms Power factor and THD Harmonic analysis.

/III. PRACTICE No. 8: SOFT STARTERS FOR THREE PHASE INDUCTION MOTORS (Computer-based educational soft starter, TELEMECANIQUE ALTISTAR 48.) (3 hour session.)

• Getting to the electrical drawings and component parts of the equipment on and off procedure analyzing relay logic panel. • Using the man-machine interface (HMI) of the starter. Starter initialization method with the factory settings. • Use PowerSuite software for programming the starter. • Set the starter based on the data plate and perform induction motor load starting procedures in manual mode. Analysis based manual mode relay logic panel. • Starting the engine with manual mode charge, programming and analysis of braking modes. Taking oscillograms of voltage and motor current during boot time. • Starter Programming Boot to cascade two motors in automatic mode. Automatic analysis based on the relay logic panel.

IX. PRACTICE No. 9: INDUCTION MOTOR SPEED CONTROL WITH BASIC VARIABLE SPEED DRIVES (Computer-based education drive for speed control TELEMECANIQUE ALTIVAR 31.) (3 hour session.)

• Getting to the electrical drawings and component parts of the equipment on and off procedure analyzing relay logic panel.

• Using the man-machine interface (HMI) of the drive. Drive Initialization method with default parameters.

• Use PowerSuite software for programming the starter. • Drive Programming based on the data plate of the induction motor, speed variation start and open

loop. Analysis of relay logic and decision panel voltage and current waveforms in the motor. • Effects of the variation of parameters: Tracking the speed ramp (FLG) transient state speed ramp

(STA), Variation of the pair (FLG and STA), Elimination of overshoot (SRF, SLF, STA and UFT), Ramps at S and U (RPT).

• Modify equipment connections and to program the drive to control the output voltage of a DC generator mobilized by the induction motor whose speed is controlled by the drive. Closed loop operation by the PI control voltage generated by controlling the speed of the group. Analysis of

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the electronic circuit for conditioning the controlled variable. • Procedures tuning proportional and integral gains of the PI controller to sudden changes in the

electrical charge of the DC generator.

X. PRACTICE No. 10: INDUCTION MOTORS SPEED CONTROL FOR DRIVES WITH PROGRAMMING I/O AND PI CONTROL LOOP (Computer-based educational drive speed control FC302 DANFOSS.) (3 hour session.)

• Features electrical panel and on-off procedure thereof, analyzing relay logic panel. • Using the drive user interface. Initialization of the drive to get factory settings. Protection of

programming and parameter entry password. • Connect the drive to your PC using the software MCT10. • Connections to electrical panel programming and initial parameter input drive based on motor

nameplate induction, starting and speed variation in open loop. Analysis of relay logic and decision panel voltage and current waveforms of the motor.

• Employing intelligent logic sequence using the software flowchart MCT10 simulating a bottle filling process.

• Modify equipment connections and to program the drive to control the output voltage of a DC generator mobilized by the induction motor whose speed is controlled by the drive. Closed loop operation by the PI control voltage generated by controlling the speed of the group. Analysis of the electronic circuit for conditioning the controlled variable.

7. WORKLOAD: THEORY/PRACTICE

Oneclass sessionper weekforthree hoursper session(14 total sessions, 10 sessionsfor the 10practices and4 sessionsforproject implementation).

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

It is amatterofprofessionaltrainingaxismeshspecializationElectronics andIndustrialAutomationand contributesengineeringsciencesto the analysisandexperimentaltestingof power converters: AC /DC, AC / ACandcontrol systemsspeed andtorqueofAC and DCmotorsfor industrial applicationsenhancedwith the use ofspecialized measuringinstrumentsandmodernprogrammingtoolsandcomputer-assistedmonitoring .

BASIC TRAINING PROFESSIONAL TRAINING

SOCIAL SKILLS DEVELOPMENT

X

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

LEARNING OUTCOMES OF THE DEGREE PROGRAM*

CONTRIBUTION (High, Medium,

Low)

LEARNING

OUTCOMES OF THE

COURSE**

THE STUDENT MUST:

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

Low

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

High 1, 2, 3, 5, 6 Design, analyzeand interpret dataobtained fromthe experimentsofpower conversionsystemsAC/DCandAC/ACandt orquecontrol systemsand speed ofDC and ACmotors.

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

High 3, 4, 5, 6 Final projectwhere students design, analyze and buildan application in thepower electronicsareato solve areal problem ofLocallndustry

d) An ability to function on multidisciplinary teams.

Medium 1, 2, 3, 4, 5, 6 Lab sessions areheld in groupsof three studentsand reportsare madein groups.

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

Medium 2, 3, 4, 5, 6 Identify,formulate and solveengineering problemsin local industryduring the developmentof the final project.

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f) An understanding of ethical and professional responsibility.

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

Medium 7 Lab reportswithcurrentresearch topicsin the area ofapplication ofpower convertersAC/DCandAC/ACon 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 3 Usemodernprogrammingtoolsand introduction ofcomputer- assistedparametersfor systems oftorqueand speedcontrolofDCandACmotors.

I) Capacity to lead, manage and undertake projects.

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10. EVALUATION IN THE COURSE Evaluation activities

Exams Tests 30 0/0 Homework/tasks Projects 40 0/0 Laboratory/Experiments Class participation Visits Report 30 0/0

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 OF THE SYLLABUS

RESOLUTION OF THE -I 5--'12--,,i; -; POLYTECHNIC BOARD:

DATE: 2015-12-12

ORAL

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