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Grid-Connected Power Converters - Operating Principles

Prof. V Seshadri Sravan Kumar · IIT Hyderabad

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About

Power electronic converters play a crucial role in integrating renewable energy systems into the power grid. This course focuses on the basic operating principles of grid-connected converters. It begins with an introduction to the switching pole, the fundamental building block of a grid-connected converter, and analyzes its operation under square-wave and sinusoidal pulse-width modulation. The commonly used single-phase and three-phase converter topologies are then introduced and analyzed using the switching pole as the unifying framework. The space vector modulation technique for three-phase converters is also covered. Together, these concepts lay the essential foundation for understanding the modeling and control of grid-connected converters, which are addressed in the follow-up course.

Intended audience: Third and Final Year UG students in Electrical/Electrical and Electronics Engineering, PG and PhD Students who (wish to) specialize in Power Electronics and Power Systems

Prerequisites: Anyone who has done some UG level courses related to circuit analysis, basic control systems and introductory power electronics can opt for this course.

Lectures

Week 1

  1. From Renewable Source to Grid – A System Overview YouTube
  2. Introduction to the Switching Pole YouTube
  3. Square Wave Mode of Operation of a Switching Pole YouTube
  4. Introduction to Sinusoidal Pulse Width Modulation YouTube
  5. Tutorial: Flexibility in the Square Wave Mode of Operation YouTube

Week 2

  1. SPWM: Modulation Index & Carrier Implementation YouTube
  2. Carrier Implementation of Center-Aligned Symmetric SPWM YouTube
  3. Harmonic Spectrum of Pole Voltage under SPWM YouTube
  4. Double Fourier Series of Switching Function YouTube
  5. THD Comparison in SPWM Variants YouTube
  6. Instantaneous Switching Model of Single Phase Converter - Tutorial YouTube

Week 3

  1. Single-Phase H-Bridge Converter: Structure & Bipolar Modulation YouTube
  2. Single-Phase H-Bridge Converter: Unipolar Modulation YouTube
  3. Introduction to Three-Phase Converters YouTube
  4. Three-Phase Converters: Harmonic Sequence & Line Voltage Spectrum YouTube
  5. Tutorial - Instantaneous Switching Model of Single Phase H-Bridge Converter YouTube

Week 4

  1. Introduction to Space Vector PWM YouTube
  2. Space Vector PWM - Realizing the Reference Vector YouTube
  3. Conventional Space Vector PWM YouTube
  4. CSVPWM - Carrier-Based Implementation YouTube
  5. SVPWM - DC Link Utilization YouTube
  6. Tutorial - Instantaneous Switching Model of Three-Phase Converter YouTube

Syllabus and materials

At NPTEL, as the course publishes them.

Credits and licence

Institution
IIT Hyderabad
Department
Electrical Engineering
Teacher
Prof. V Seshadri Sravan Kumar
Level
Undergraduate
Language
English
Subjects
Engineering
Source
NPTEL
Licence
CC BY-NC-SA, as NPTEL states it. Non-commercial use only. NPTEL's terms
Attribution
NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge. Coordinated by IIT Madras.
Who can watch
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