1. POWER ELECTRONICS COURSE OUTLINE
DET 309
POWER ELECTRONICS COURSE OUTLINE
4/20/2017

2. LECTURERS e-mail: faridun@unimap.edu.my TEACHING ENGINEER
Mr. Mohammad Faridun Naim bin Tajuddin
Room: 1. KKF 2,Seberang Ramai, Kuala Perlis.
2. KKF 10A, Tmn Kuala Perlis, Kuala Perlis.
TEACHING ENGINEER
Mr. Mohammad Faridun Naim bin Tajuddin
4/20/2017

3. Course Synopsis
This course will introduce the students to the power electronics converters. Firstly, students will be introduced to the power electronics concept and power semiconductor devices. Then types of converters and their circuit implementation such as AC-DC, AC-AC and DC-DC will be introduced to the students. Furthermore, students also will be exposed to the circuit and waveforms analysis for each converters. Lastly students will be introduced to the application of power electronics converters as motor drives.
4/20/2017

4. Course Contents Week 1 & 2 Chapter 1: Power Electronics Concept
• DESCRIBE the power electronics concept as power conversion.
• DESCRIBE the application of power electronics.
DESCRIBE and CALCULATE peak value, rms value and average value.
4/20/2017

5. Course Contents Week 3 & 4 Chapter 2: Power Semiconductor Devices
• DESCRIBE the operation and characteristics of Power Diodes or Rectifiers.
• DESCRIBE the operation and characteristics of Thyristor such as SCR, Diac and Triac.
• DESCRIBE the operation and characteristics of Power Mosfet
• DISCUSS the controller circuit requirement for Thyristors and Mosfet and circuit implementation.
4/20/2017

6. Course Contents Week 5, 6, 7 & 8 Chapter 3: AC-DC Converters
• DESCRIBE the operation of Half-wave rectifier and Full-wave rectifier by using Power Diodes.
• DESCRIBE the operation of Controlled Half-wave rectifier and Full-wave rectifier by using Thyristors.
• CALCULATE and SOLVE problems related to the operation of Half-wave rectifier and Full-wave rectifier for both controlled and uncontrolled circuit.
• ANALYZE the waveforms of Half-wave rectifier and Full-wave rectifier for both controlled and uncontrolled circuit
• ANALYZE the effect of R Load, R-L Load and implementation of Free-wheeling diodes
4/20/2017

7. Course Contents Week 8 & 9 Chapter 4: AC-AC Converters
• DESCRIBE and COMPARE method of controlling AC Voltages such as Phase Angle Control, Integral Cycle Control etc and also circuit implementation.
• DESCRIBE and COMPARE the operation of AC Voltage Controller by using SCR, Diac and Triac .
• CALCULATE and SOLVE problems related to the operation of AC Voltage Controller.'
• ANALYZE the waveforms of AC Voltage Controller for R Load and R-L Load.
• DISCUSS and ANALYZE the effect of snubber circuit.
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8. Course Contents Week 10, 11 & 12 Chapter 5: DC-DC Converter
• DESCRIBE the principles of DC-DC Converters by using switch mode.
• DESCRIBE types of DC-DC Converters such as Buck, Boost and Buck-Boost, their operation and circuit implementation.
• CALCULATE and SOLVE problems related to the operation of DC-DC Converters.
• DESCRIBE the effect of the inductor value to the Continous Conduction Mode (CCM) and Discontinues Conduction Mode (DCM)
• ANALYZE the waveforms of Buck, Boost and Buck-Boost Converters and COMPARE between CCM and DCM .
4/20/2017

9. Course Contents
Week 13 & 14
Chapter 6: Power Electronics Converters as Motor Drives
• DESCRIBE the operation and characteristics of AC Motor and DC Motor.
• DESCRIBE and COMPARE methods of controlling speed of AC Motor and DC Motor by using power semiconductor devices.
• CALCULATE and SOLVE problems related to the controlling speed of AC Motor and DC Motor
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10. Course Contents Week 15 & 16 Week 17 STUDY WEEK (REVISION) FINAL EXAM
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11. Course Contents Laboratory Tests & Quizzes
4 lab experiments – 3rd week
1 Lab Test
1 Mini Project a) Software & Hardware
b) Report & Presentation
Tests & Quizzes
2 Tests on 8th & 14th week
Quiz - anytime
4/20/2017

12. Course Evaluation Final Examination – 50% Course works – 50%
Tests & Quizzes %
Lab experiments %
Lab Test %
1 Mini Project a) Software %
b) Hardware %
c) Report & Presentation %
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13. List of Textbooks & References
Mohan, Undeland, Robbins. (2002). Power Electronics: Converters, Application. 3rd ed. John Wiley & Sons.
Hart. Daniel W. (1997). Introduction to Power Electronics. Prentice Hall.
References
Muhammad H. Rashid. (2004). Power Electronics: Circuit
Devices & Application. 3rd ed. Pearson-Prentice Hall.
2. Theodore Wildi. (2006). Electrical Machines, Drives & Power
Systems. 6th ed. Prentice Hall.
3. Krein. Philip T. (1998). Elements of Power Electronics. Oxford University Press.
4/20/2017

14. POWER ELECTRONICS 1. POWER ELECTRONICS CONCEPT
DET 309
POWER ELECTRONICS 1. POWER ELECTRONICS CONCEPT
Prepared by: Mohd Faridun Naim b. Tajuddin

15. definition OF POWER ELECTRONICs
The task of power electronics is to process and control the flow of electric energy by supplying voltages and currents in a form that is optimally suited for user loads.
Power Processor
Input Power
Source
Controller
Load
Measurement
Reference
Output Power
Figure 1.1: Block diagram of a power electronic system.
Prepared by: Mohd Faridun Naim b. Tajuddin

16. definition OF POWER ELECTRONICS…cont.
PE is an interdisciplinary field:
SYSTEM & CONTROL
POWER & ENERGY
Switch control, Feedback control, System
Energy Processing, Power supplies, Motors and drives
POWER ELECTRONICS
Circuits, Magnetic, Power semiconductors
ELECTRONICS & DEVICES
Figure 1.2: Control, energy, and power electronics are related.
Prepared by: Mohd Faridun Naim b. Tajuddin

17. Power Electronics Systems
To convert electrical energy from one form to another, i.e. from the source to load with:
Highest efficiency,
Highest availability
Highest reliability
Lowest cost,
Smallest size
Least weight.
Prepared by: Mohd Faridun Naim b. Tajuddin

18. Power Electronics Applications
Static Applications
Involves non-rotating or moving mechanical components
Examples
Switch-mode (dc) power supplies and uninterruptible power supplies. Advances in microelectronics fabrication technology have led to the development of computers, communication equipment, and consumer electronics, all of which require regulated dc power supplies and often uninterruptible power supplies.
Electro-technical applications.
These include equipment for welding, electroplating, and induction heating.
Utility-related applications.
One such application is in transmission of power over high-voltage dc (HVDC) lines. At the sending end of the transmission line, line-frequency voltages and currents are converted into dc. This dc is converted back into the line-frequency ac at the receiving end of the line. Power electronics is also beginning to play a significant role as electric utilities attempt to utilize the existing transmission network to a higher capacity. Potentially, a large application is in the interconnection of photovoltaic and wind-electric systems to the utility grid.
Prepared by: Mohd Faridun Naim b. Tajuddin

19. Power Electronics Applications
Drive Applications
Intimately contains moving or rotating components such as
motors.
Examples
Electric trains
Electric vehicles
Air-conditioning System
Pumps, Compressor
Conveyer Belt (Factory automation).
Prepared by: Mohd Faridun Naim b. Tajuddin

20. Figure 1.3: DC Power Supply System
Application Examples
Static Application
DC Power Supply AC DC
Diode Rectifier
Filter
AC Line voltage
DC-DC Converter
LOAD
Figure 1.3: DC Power Supply System
Prepared by: Mohd Faridun Naim b. Tajuddin

21. Adjustable Speed Drive
Application Examples
Drive Application
Motor Driven Pump
Conventional Drive
Adjustable Speed Drive
In a conventional pump system, the pump operates at essentially a constant speed, and the pump flow rate is controlled by adjusting the position of the throttling valve.
This procedure results in significant power loss across the valve at reduced flow rates where the power drawn from the utility remains essentially the same as at the full flow rate.
This power loss is eliminated in the system of Adjustable Speed Drive, where an adjustable-speed motor drive adjusts the pump speed to a level appropriate to deliver the desired flow rate.
Prepared by: Mohd Faridun Naim b. Tajuddin

22. Power Processor
For a systematic study of power electronics, it is useful to categorize the power processors, shown in the block diagram of Fig. 1.1, in terms of their input and output form or frequency. In most power electronic systems, the input is from the electric utility source. Depending on the application, the output to the load may have any of the following forms:
1. DC
(a) regulated (constant) magnitude
(b) adjustable magnitude
2. AC
(a) constant frequency, adjustable magnitude
adjustable frequency and adjustable magnitude
The utility and the AC load, independent of each other, may be single
phase or three phase.
The power flow is generally from the utility input to the output load.
There are exceptions, however. For example, in a photovoltaic system
interfaced with the utility grid, the power flow is from the photovoltaics
(a DC input source) to the AC utility (as the output load).
In some systems the direction of power flow is reversible, depending on
the operating conditions.
Prepared by: Mohd Faridun Naim b. Tajuddin

23. Energy Storage Elements
Power Converters
The power processors of Fig. 1.1 usually consist of more than one power
conversion stage (as shown in Fig. 1.3) where the operation of these stages is
decoupled on an instantaneous basis by means of energy storage elements
such as capacitors and inductors.
Therefore, the instantaneous power input does not have to equal the
instantaneous power output. We will refer to each power conversion stage as a
converter.
Thus, a converter is a basic module (building block) of power electronic
systems.
It utilizes power semiconductor devices controlled by signal electronics
(integrated circuits) and possibly energy storage elements such as inductors
and capacitors.
Energy Storage Elements
Converter 1
Converter 2
Input
Output
Figure 1.4: Power Processor Block Diagram
Prepared by: Mohd Faridun Naim b. Tajuddin

24. Power Converters…cont.
Converters can be divided into the following broad categories:
LOAD AC DC
Inverter
DC Input
AC output
DC-AC Inverter
AC-DC Rectifier AC DC
Rectifier
AC Input
DC output
Filter DC
DC-DC Converter
DC output
DC input
DC-DC Chopper
Prepared by: Mohd Faridun Naim b. Tajuddin

25. Current issues Energy scenario
Need to reduce dependence on fossil fuel
– coal, natural gas, oil, and nuclear power resource
Depletion of these sources is expected.
Tap renewable energy resources:
– solar, wind, fuel-cell, ocean-wave
Energy saving by PE applications. Examples:
– Variable speed compressor air-conditioning system:
30% savings compared to thermostat-controlled
system.
– Lighting using electronics ballast boost efficiency of
fluorescent lamp by 20%.
Prepared by: Mohd Faridun Naim b. Tajuddin

26. Current issues…cont. 2. Environment issues Nuclear safety.
– Nuclear plants remain radioactive for thousands of
years.
Burning of fossil fuel
– emits gases such as CO2, CO (oil burning), SO2, NOX (coal burning) etc.
– Creates global warming (green house effect), acid rain
and urban pollution from smokes.
Possible Solutions by application of PE. Examples:
– Renewable energy resources.
– Centralization of power stations to remote non-urban
area. (mitigation).
– Electric vehicles.
Prepared by: Mohd Faridun Naim b. Tajuddin

27. Power Electronics growth
PE rapid growth due to:
Advances in power (semiconductor) switches
Advances in microelectronics (DSP, VLSI,
Microprocessor/microcontroller
New ideas in control algorithms
Demand for new applications
Prepared by: Mohd Faridun Naim b. Tajuddin