
Introduce power electronics as switching power semiconductor devices that convert ac and dc power, outline applications and circuits, and explain transistor switching (saturation and cutoff) with an ac adapter example.
Explore the key semiconductor devices used in power electronics, including diodes, thyristors, MOSFETs, BJTs, IGBTs, and thyristor families, with emphasis on switching behavior, reverse recovery, and device selection via MATLAB/Simulink.
Implement semiconductor devices in MATLAB Simulink, using voltage source, diode and mosfet driven by a pulse generator; observe outputs with scopes and set powergui for continuous operation to study rectifiers.
Compute instantaneous and average power from voltage and current, derive energy as the time integral over a period, and distinguish absorbed versus supplied power in periodic circuits.
Explain rms values for ac and pulsed waveforms and show how to compute rms by integrating v^2 over a period, relating to dc power and duty ratio.
Analyze apparent, active, and reactive power, understand power factor and distortion due to harmonics from non-linear loads, and learn how displacement factor, distortion factor, and THD influence system efficiency.
Learn how rectifiers convert ac to dc using diodes and bridge circuits, and explore single and three-phase configurations, uncontrolled and controlled types, with a basic resistive-load example.
Explore uncontrolled rectifiers with a resistive load fed by a transformer to step down and isolate. Compare center-tapped and full-bridge rectifiers and compute their average output voltage.
Explore rectifier performance parameters, including efficiency, form factor, ripple factor, utilization factor, and power factor, and learn how transformer input, harmonics, and filters shape a clean rectified voltage.
Examine uncontrolled rectifiers with resistive-inductive loads, including steady-state and natural current responses and extinction angle beta. Apply freewheeling diodes and DC/LC filters to smooth output, with a Matlab Simulink example.
Discover how single-phase controlled rectifiers use delay angles and gate control to regulate output voltage for resistive and inductive loads, with example computing average load voltage, current, and input power.
Explore three phase control rectifiers and thyristor bridges for industrial power electronics up to 120 kilowatts, detailing output frequency, line-to-line voltages, delay angle, and average output voltage.
Explore the fundamentals of DC-DC converters, including stepping high voltage sources up or down for traction, electric automobiles, and renewable energy, and compare linear regulators with switching converter options.
Design a buck converter in continuous conduction mode to deliver 18 V from 40 V, meet ripple under 5%, and select inductance, capacitance, and ESR using MATLAB Simulink.
Explore transformer-based buck converters for isolated dc-dc power supplies, covering forward and push-pull as well as full-bridge topologies, their energy transfer, duty-cycle relations, and output filtering.
Learn how a boost converter raises 12 V to 30 V through switching and duty cycle, with continuous conduction mode, sizing, and a Simulink design.
Explore buck-boost and flyback converters, examining duty cycle, magnetizing inductance, and transformer coupling to derive output voltage and continuous conduction mode conditions for isolated power.
Explore pulse width modulation in power electronics by comparing a reference signal with a triangular carrier to generate transistor switching and control duty cycle and switching frequency.
Use a passive lc low-pass filter to shape a square-wave inverter output into a sinusoid, design lc for the fundamental frequency, and compare thd reduction between sine pwm and pwm.
Explain the six-switch three-phase inverter using 180-degree and 120-degree conduction modes, with PWM modulation and MATLAB Simulink verification of line-to-line and line-to-neutral voltages.
Explore ac voltage controllers for single-phase and three-phase systems, using thyristors to regulate output voltage, current, and average power with on-off and angle control.
Analyze the three phase full wave controller with six thyristors, exploring firing sequences and delay angles from 0 to 150 degrees, output voltage, current, and power factor using MATLAB Simulink.
This course was made to cover the Fundamental of Power Electronics needed for a student to understand this subject, for a researcher to start working on power electronic design, and for a curious person to satisfy them with answers to their questions. The course organized in systematic way in order to fill the gaps with logical means. The course will take the student from basic level to advanced level of understanding how different power electronic converters operate. First chapter will introduce the student to the topic with definitions and how different semiconductor work. In the second chapter, mathematical tools needed to analyze and design power converters will be covered. then in the third chapter, Rectifiers will be studied and various topologies will be shown. after that, chapter 4,5 and 6 will cover DC-DC Converters, DC-AC Converters, and AC-AC Converters respectively, and all different power converters will be implemented using MATLAB/SIMULINK software in order to give the student the opportunity to start designing converters and pursue novel converters for researchers.
Detailed information about chapters
Chapter 1: Introduction
- Introduction A
- Introduction B
- Example Design
Chapter 2: Power Computations
- Power and Energy
- Inductors,Capacitors and Energy Recovery
- Effective Values RMS
- Apparent Power and Power Factor
Chapter 3: Rectifiers
- Introduction
- Uncontrolled Rectifiers with Resistive Load
- Rectifier Performance Parameters
- Uncontrolled Three Phase Rectifiers
- Uncontrolled Rectifiers with Resistive-Inductive Load
- Controlled Single Phase Rectifier with Resistive Load
- Controller Single Phase Rectifier with RL Load
- Controlled Three Phase Rectifiers
Chapter 4: DC-DC Converters
- Introduction
- Buck Converter 1
- Buck Converter 2
- Transformer based version of Buck Converter
- Boost Converter
- Buck-Boost and Flyback Converters
- Cuk Converter
- SEPIC Converter
- Pulse Width Modulation (PWM)
Chapter 5: DC-AC Converter (Inverter)
- Introduction
- Square Wave Inverter
- Fourier Series Analysis and Total Harmonic Distortion
- Filtering and Sine PWM
- Three Phase Inverter
- Multilevel Inverter
Chapter 6: AC-AC Converter
- AC-AC Converter 1
- AC-AC Converter 2
- Single Phase Full Wave Controller with RL load
- Three Phase Full Wave Controller
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See you in the course!