JNTUK R19 3-1 Power Electronics Material/Notes PDF Download

JNTUK R19 3-1 Power Electronics Material/Notes PDF Download

Students those who are studying JNTUK R19 EEE Branch, Can Download Unit wise R19 3-1 Power Electronics Material/Notes PDFs below.

JNTUK R19 3-1 Power Electronics Material/Notes PDF Download

Preamble: The usage of power electronics in day to day life has increased in recent years. It is important for student to understand the fundamental principles behind all these converters. This course covers characteristics of semiconductor devices, ac/dc, dc/dc, ac/ac and dc/ac converters. The importance of using pulse width modulated techniques to obtain high quality power supply (dc/ac converter) is also discussed in detail in this course.

OBJECTIVES:

• To study the characteristics of various power semiconductor devices and to design firing circuits for SCR.
• To understand the operation of single phase full–wave converters and analyze harmonics in the input current.
• To study the operation of three phase full–wave converters.
• To understand the operation of different types of DC-DC converters.
• To understand the operation of inverters and application of PWM techniques for voltage control and harmonic mitigation.
• To analyze the operation of AC-AC regulators.

UNIT-1

Introduction Basic Theory of Operation – Static Characteristics-Two Transistors analogy -Turn on and Turn off Methods – Methods of SCR Triggering – Dynamic & Gate Characteristics of SCR – Series and Parallel Operation – Snubber circuit – Characteristics of Power MOSFET and IGBT.

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UNIT–2:

Single Phase AC-DC Converters Single Phase half wave controlled rectifiers – R load and RL load with and without freewheeling diode – Single Phase fully controlled bridge converter with R load, RL load and RLE load – Continuous and Discontinuous conduction – Effect of source inductance in 1-phase fully controlled bridge rectifier with continuous conduction – Expression for output voltages – Single Phase semi Converter with R load, RL load and RLE load – Continuous and Discontinuous conduction – Harmonic Analysis – Single Phase Dual Converters – Numerical Problems

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UNIT–3:

Three Phase AC-DC Converters & AC – AC Converters Three Phase half wave Rectifier with R and RL load -Three Phase fully controlled rectifier with R and RL load – Three Phase semi converter with R and RL load – Expression for Output Voltage – Harmonic Analysis – Three Phase Dual Converters – Numerical Problems.

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AC-AC power control by phase control with R and RL loads – Three phase AC voltage regulator with R load – Single phase step down Cycloconverter – Numerical Problems.

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UNIT–4:

DC–DC Converters Operation of Basic Chopper – Classification – Control Techniques – Analysis of Buck, Boost and Buck-Boost converters in Continuous Conduction Mode (CCM) and Discontinuous Conduction Modes (DCM) – Output voltage equations using volt-sec balance in CCM & DCM – Expressions for output voltage ripple and inductor current ripple- Numerical Problems.

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UNIT-5:

DC–AC Converters Introduction – Classification – Single Phase half bridge and full bridge inverters with R and RL loads – Unipolar & Bipolar Switching – Quasi-square wave pulse width modulation – Three Phase square wave inverters – 1200 conduction and 1800 conduction modes of operation – PWM inverters – Sinusoidal Pulse Width Modulation – Current Source Inverter (CSI) – Numerical Problems.

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TEXT BOOKS:

1. Power Electronics: Converters, Applications and Design by Ned Mohan, Tore M Undeland, William P Robbins, John Wiley & Sons.
2. Power Electronics: Circuits, Devices and Applications – by M. H. Rashid, Prentice Hall of India, 2nd edition, 1998
3. Power Electronics: Essentials & Applications by L.Umanand, Wiley, Pvt. Limited, India, 2009.

REFERENCE BOOKS:

1. Elements of Power Electronics–Philip T.Krein.oxford.
2. Power Electronics – by P.S.Bhimbra, Khanna Publishers.
3. Thyristorised Power Controllers – by G. K. Dubey, S. R. Doradla, A. Joshi and R. M. K.Sinha, New Age International (P) Limited Publishers, 1996.
4. Power Electronics: by Daniel W.Hart, Mc Graw Hill.

OUTCOMES:

• Explain the characteristics of various power semiconductor devices and analyze the static and dynamic characteristics of SCR’s.
• Design firing circuits for SCR.
• Explain the operation of single phase full–wave converters and analyze harmonics in the input current.
• Explain the operation of three phase full–wave converters.
• Analyze the operation of different types of DC-DC converters.
• Explain the operation of inverters and application of PWM techniques for voltage control and harmonic mitigation.
• Analyze the operation of AC-AC regulators.