UNIVERSITY OF ENGINEERING & TECHNOLOGY LAHORE 1
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. 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: Syed Mansoor Ali Shah Lab Assistant: Mushtaq Ahmad Lab In Charge: Dr. Zubair A. Khan 2
Fig. 1 Scan Drive Panel Detailed View 3
Reference Notes: 1. Power 2. 3. 4. 5. 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 4 Books and Electronics Principles and Applications, by Joseph Vithayathil, Mc Graw-Hill, 1995. Rashid M.H., Power Electronics: Circuits, Devices and Applications, Prentice Hall, 1988. Bose B., Power Electronics and AC Drives, Prentice Hall, 1986. Ermiş, M., Static Power Conversion I - Lecture Notes 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.
1. Study of 3-Phase Bridge Rectifier working and characteristics (Fig. 3) 2. Speed Control of DC Motor using field control armature control (Fig. 4) Learning Objectives Learning Objectives List of Experiments: 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. 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 5
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 6
3. Power factor improvement using synchronous motor 4. Explain the basic principle of a Programmable Logic Controller (Fig. 5) 5. PLC Trainer Software Experiments using Mitsubishi PLC (FX MELSEC-F) 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. 6 Mitsubishi PLC Trainer Software Fig. 7 Mitsubishi PLC Trainer Operation Switches a. Control of three lamps using two push buttons and a switch. Fig. 5 SYSMAC C200HE PLC Fig. 8 Ladder Logic for Lamp Control 7
b. To keep a lamp on by latching. Fig. 11 Ladder Logic for Interlocking Mode Fig. 8 Ladder Logic for Lamp Latching c. To keep a lamp on by SET/RST. e. The Activation of outputs at the rising/falling edge of a pulse. Fig. 9 Ladder Logic for Lamp Control using SET/ RST d. The control of (two) lights in interlocking mode. Fig. 12 Output Activation at Pulse Edges Fig. 10 Lights in Interlocking Mode Fig. 13 Ladder Logic for Output Activation at Pulse Edges 8
g. Use of timers to introduce delays between pressing push buttons and turning off lights. 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. 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. 15 Use of Timers for Delay Introduction Fig. 16 Ladder Logic for Delay Introduction between opening/closing of a gate Fig. 18 Control of On/Off Times of Interlocking Lamps 9
i. Use of counters to count parts moving on a conveyer belt. Fig. 21 Ladder Logic to Count Items on a Conveyer Belt Research Work: Fig. 19 Use of Counters to Count Items on a Conveyer Belt 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) Dr. Noor M. Sheikh 2. Design and Implementation of PC based SCADA Systems for Industrial Automation Fig. 20 Operation Panel to Count Items on a Conveyer Belt 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 10
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) 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) Dr. Suhail A. Qureshi 2. Software Development for Energy Conservation Analysis of Industrial Units Muhammad Farooq Umar (2000-MS-E-22) Dr. Suhail A. Qureshi 3. Load Flow Analysis of Multi- Machine Systems Ammad Saleem Ahmed (2001-MS-E-21) Dr. Suhail A. Qureshi 4. Design and Analysis of Space Vector Modulation Switching Schemes for AC Drives Dure Sadaf (99-MS-E-37) Dr. K. M. Hassan 5. Design of High Efficiency Quasi Resonant Converter Muhammad Shafiq (2002 / II-MS-E-Cont-32) 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 11
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 12