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

LECTURERS e-mail: faridun@unimap.edu.my TEACHING ENGINEER Mr. Mohammad Faridun Naim bin Tajuddin e-mail: faridun@unimap.edu.my 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

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

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

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

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

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. 4/20/2017

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

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 4/20/2017

Course Contents Week 15 & 16 Week 17 STUDY WEEK (REVISION) FINAL EXAM 4/20/2017

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

Course Evaluation Final Examination – 50% Course works – 50% Tests & Quizzes 10 % Lab experiments 10 % Lab Test 5 % 1 Mini Project a) Software 5 % b) Hardware 10 % c) Report & Presentation 10 % 4/20/2017

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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