UNIVERSITY OF ENGINEERING & TECHNOLOGY LAHORE(Opposite Electronics Lab) Description This course is a continuation of ... Power Electronics Laboratory work is done by Name of Course:

Department of Electrical Engineering UET LAHORE

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UNIVERSITY OF ENGINEERING & TECHNOLOGY

LAHORE


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• To give them an ability to design and choose such systems for various

industrial applications.

Lab Equipment:

1) Scan Lab System panel equipped with

� Resistive, capacitive and inductive load

units

� One AC and one DC machine both of which

can run as motor or generator

� Brake control unit to operate with separately

excited DC machine 2) Cathode-Ray-Oscilloscopes

3) Dual DC Power Supplies (30 volts)

4) Analog Multimeter 5) Digital Multimeter 6) Pentium IV PCs (3 GHz CPU, 256 MB RAM)

Lab Staff:

� Supervisor:

Syed Mansoor Ali Shah

� Lab Assistant: Mushtaq Ahmad

Lab In Charge:

Dr. Zubair A. Khan

Power System

Simulation Laboratory

Venue:

Ground Floor Department of Electrical

Engineering (New Block) (Opposite Electronics Lab)

Description

This course is a continuation of Power Electronic Devices with an

emphasis toward industrial electronic controls. Emphasis is

placed on solid state motor controls, programmable logic

controllers, velocity control and position control. Skills emphasized

are in set up, operation, programming and testing of these

types of equipment.

Lab Objective:

• To equip students with

knowledge about operation characteristics and major

application areas of modern power semiconductor

devices and associated power converters.

• To introdue the students with the use of Scan Drive System Panel and to get

them familiar with electrical machinery at industrial level.


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Fig. 1 – Scan Drive Panel Detailed View


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Fig. 2 – Front View of Scan Drive System

Prerequisites:

1. Circuit Analysis 2. Semi-conductor devices 3. Power Electronics

Name of Course:

Industrial Electronics (EE473)

Text Book:

D.A. Bradley, Power Electronics – Tutorial Guides in Electronic

Engineering

Reference Books and

Notes:

1. Power Electronics –

Principles and

Applications, by Joseph Vithayathil, Mc Graw-Hill,

1995.

2. Rashid M.H., Power

Electronics: Circuits, Devices and Applications,

Prentice Hall, 1988.

3. Bose B., Power Electronics and AC Drives, Prentice

Hall, 1986. 4. Ermiş, M., Static Power Conversion I - Lecture Notes

5. Erickson,R.W., Fundamentals of Power Electronics – Lecture

Notes

Laboratory Work:

Laboratory work is done by

groups of five students. Each group has to carry out four

experiments. Each experiment starts with a quiz to measure

the readiness of the student to do the experiment. Report is

required for each experiment. Two Research Assistants / Lab

Engineers are allocated by the Department to supervise the

laboratory work.


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List of Experiments: 1. Study of 3-Phase Bridge Rectifier working and

characteristics (Fig. 3)

Learning Objectives

• Analyze the operation of

three phase rectifiers. • Distinguish between

half-wave and full-wave bridge three phase

rectifiers. • Construct and test three

phase half wave and full wave bridge rectifiers.

2. Speed Control of DC Motor using � field control � armature control (Fig. 4)

Learning Objectives

• Identify the need for Reduced Voltage starting of motors.

• Apply a resistance

reduced voltage starting system to a

typical three phase motor.

Fig. 3 – Three Phase Rectifier Circuit


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• Connect and test the

operation of a Reduced Voltage starting system

using the factory supplied manual as a

resource. • Identify the need for

Soft Starting of motors.

• Apply a soft starting

system to a typical three phase motor.

• Connect and test the operation of a soft

starting system using the factory supplied

manual as a resource.

Fig. 4 – Scan Drive Panel with Motor Generator Unit


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3. Power factor improvement using synchronous motor

4. Explain the basic principle of a Programmable Logic

Controller (Fig. 5)

Learning Objectives

• Identify the basic components of a PLC.

• Describe the function

of each of the basic components of a PLC.

• Explain the operation of a PLC in terms of

one complete scan cycle.

• Describe Input/Output (I/O) structure for the

SYSMAC C200HE PLC. • Describe the Memory

System Architecture of a SYSMAC C200HE

PLC. • Identify types of PLC

Input/Output devices.

• Compare the different types of digital I/O

interfaces. • Describe typical power

distribution wiring to a PLC.

Fig. 5 – SYSMAC C200HE PLC

5. PLC Trainer Software

Experiments using Mitsubishi PLC (FX MELSEC-F)

a. Control of three lamps using two push buttons

and a switch.

Fig. 6 Mitsubishi PLC Trainer Software

Fig. 7 Mitsubishi PLC Trainer Operation Switches

Fig. 8 Ladder Logic for Lamp Control


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b. To keep a lamp on by latching.

c. To keep a lamp on by SET/RST.

d. The control of (two) lights in interlocking mode.

Fig. 10 Lights in Interlocking Mode

Fig. 11 Ladder Logic for Interlocking Mode

e. The Activation of outputs at the rising/falling edge of a pulse.

Fig. 12 Output Activation at Pulse

Edges

Fig. 13 Ladder Logic for Output Activation at Pulse Edges

Fig. 8 Ladder Logic for Lamp Latching

Fig. 9 Ladder Logic for Lamp Control using SET/ RST


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Fig. 14 Alternative Ladder Logic for Output Activation at Pulse Edges

f. Use of timers to introduce delays between pressing

push buttons and opening/closing of a gate.

Fig. 15 Use of Timers for Delay Introduction

Fig. 16 Ladder Logic for Delay Introduction between opening/closing of a gate

g. Use of timers to introduce delays between pressing push buttons and turning

off lights.

Fig. 17 Ladder Logic for Delay Introduction between pressing push buttons and turning off lights

h. Use of timers to

continuously control on/off time of two interlocking

lamps.

Fig. 18 Control of On/Off Times of Interlocking Lamps


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i. Use of counters to count parts moving on a conveyer belt.

Fig. 19 Use of Counters to Count Items on a

Conveyer Belt

Fig. 20 Operation Panel to Count Items on a Conveyer Belt

Fig. 21 Ladder Logic to Count Items on a Conveyer Belt

Research Work:

Undergraduate Research Work:

1. “Design and Implementation

of PID Controller for Speed Control”

Group Members:

Mahnoor (03(f)-E-178) Aneela (03(f)-E-181)

Beenish (03(f)-E-212)

Supervisor:

Dr. Noor M. Sheikh

2. “Design and Implementation of PC based SCADA Systems

for Industrial Automation”

Group Members:

Yasir (03(f)-E-20)

Wasim (03(f)-E-66)

Waseem (03(f)-E-109)

Supervisors: Dr. Noor M. Sheikh

Dr. Asghar Saqib


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3. “Sentinel Controller Emulation with Strategic

Traffic Management and Remote Monitoring”

Group Members: Adil (03(f)-E-169)

Muneeb (03(f)-E-170) Usman (03(f)-E-171)

Saad (03(f)-E-259)

Supervisor:

Dr. Tahir Izhar

Graduate Research Work:

1. “Computerized Analysis for

Optimization of 132 KV Transmission Line Network in

LESCO”

Mahmood Ahmad (99-MS-E 23)

Supervisor: Dr. Suhail A. Qureshi

2. “Software Development for

Energy Conservation Analysis of Industrial Units”

Muhammad Farooq Umar (2000-MS-E-22)

Supervisor: Dr. Suhail A. Qureshi

3. “Load Flow Analysis of Multi-Machine Systems”

Ammad Saleem Ahmed (2001-MS-E-21)

Supervisor:

Dr. Suhail A. Qureshi

4. “Design and Analysis of Space Vector Modulation

Switching Schemes for AC Drives”

Dure Sadaf

(99-MS-E-37)

Supervisor: Dr. K. M. Hassan

5. “Design of High Efficiency

Quasi Resonant Converter”

Muhammad Shafiq

(2002 / II-MS-E-Cont-32)

Supervisor: Dr. Tahir Izhar

Publications:

1. “Optimization of Dynamic

Performance of WAPDA Power System using

Excitation Systems”

(Paper ID# PS-22)

Authors:

Hafiz Tehzeeb-ul-Hassan Muhammad Azhar

Muhammad Afzal

2. “Control of Torque in Switched Reluctance Motor”

(Paper ID# PE-19)

Authors:

Yasir Saleem

Tahir Izhar


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Laboratory Potential: • A wide range of experiments can be designed for the Power Electronics course,

making full use of the various units of the Scan

Drive system. These can

include experiments exploiting the working of

diodes, thyristors, power transistors, triac, direct

voltage converter, alternating voltage converter and

inverter DC-AC

• Evaluation of FACTS devices in Power Systems using

MATLAB

• Implementation of Numerical Relays using PIC16F87

• Complete study of four quadrant AC Drives

• Control of Induction

Generator set using Fuzzy Logic

• Transmission and Distribution System Simulator is also available to undergraduate

students

Documents

UNIVERSITY OF ENGINEERING & TECHNOLOGY LAHORE(Opposite Electronics Lab) Description This course is a continuation of ... Power Electronics Laboratory work is done by Name of Course: