Lecture

Mod-12 Lec-37 Current Control

This module focuses on current control techniques used in switched mode power converters. Understanding current control is vital for achieving optimal performance and stability in power conversion applications.

The module will cover:

  • Fundamentals of current control in DC-DC converters
  • Implementation strategies for current feedback loops
  • Impact of current control on system performance
  • Real-world applications and case studies

Additionally, students will engage with various problem sets that enhance their grasp of current regulation methods.


Course Lectures
  • Mod-01 Lec-01 Introduction to DC-DC converter
    Prof. L. Umanand, Prof. V. Ramanarayanan

    The first module introduces the fundamental principles of DC-DC converters, which are crucial in switched mode power conversion. Students will explore:

    • The basic operation and importance of DC-DC converters.
    • Key terms and definitions related to power conversion.
    • Applications of DC-DC converters in various industries.
    • The efficiency and performance metrics used to evaluate converters.

    This module sets the foundation for understanding more complex concepts in power electronics.

  • Mod-02 Lec-02 Diode
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module delves into the characteristics and functions of diodes in switching applications. Topics covered include:

    • Types of diodes and their specific applications in power converters.
    • Forward and reverse bias operation of diodes.
    • Dynamic and static characteristics of diodes.
    • Common issues and failure modes associated with diode use.

    Understanding diodes is essential for designing efficient power conversion systems.

  • Mod-02 Lec-03 Controlled Switches
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module focuses on controlled switches, which are pivotal in managing power flow in converters. Key points include:

    • Types of controlled switches: MOSFETs, IGBTs, and BJTs.
    • Switching characteristics and how they influence converter performance.
    • Control mechanisms for optimizing switch operation.
    • Applications of controlled switches in various converter topologies.

    Students will gain an understanding of how these devices enhance the functionality of power converters.

  • Mod-03 Lec-04 Prior Art
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module explores the concept of prior art in the context of power converters. It includes:

    • Historical developments in switching technology.
    • Influential designs and innovations that have shaped current practices.
    • Legal and ethical considerations in power electronics design.
    • Case studies of significant prior art in power conversion.

    Students will learn how past innovations impact current technologies and practices in power electronics.

  • Mod-04 Lec-05 Inductor
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module covers inductors used in power conversion, emphasizing their design and application. Key topics include:

    • Fundamental principles of inductance and energy storage.
    • Design considerations for inductors in various converter topologies.
    • Performance characteristics and efficiency factors.
    • Common issues encountered in inductor design and applications.

    Students will understand how inductors function within converters and their impact on overall system performance.

  • Mod-04 Lec-06 Transformer
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module examines transformers and their critical role in switched mode power conversion. Topics include:

    • Fundamentals of transformer operation and types.
    • Design principles for transformers in DC-DC converters.
    • Efficiency considerations and loss mechanisms.
    • Applications of transformers in isolated and non-isolated converters.

    By understanding transformers, students will appreciate their importance in achieving voltage regulation and isolation in power systems.

  • Mod-04 Lec-07 Capacitor
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module covers the fundamental aspects of capacitors in switched mode power conversion. Capacitors play a critical role as energy storage devices, influencing the performance and efficiency of power converters.

    Key topics include:

    • Types of capacitors and their characteristics
    • Capacitor selection criteria for various applications
    • Impact of capacitors on converter stability and transient response
    • Design considerations for capacitor circuits in power converters
  • Mod-04 Lec-08 Issues related to switches
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module focuses on the various issues related to switches in switched mode power conversion systems. Understanding these issues is vital for optimizing the performance and reliability of power converters.

    Topics covered include:

    • Switching losses and their impact on efficiency
    • Thermal management of power switches
    • Understanding switch characteristics and their effects on circuit design
    • Strategies for minimizing switch-related issues in converter designs
  • Mod-04 Lec-09 Energy storage - Capacitor
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module explores the role of capacitors as energy storage elements in switched mode power converters. Capacitors are essential for smoothing output voltage and ensuring stable operation.

    Key points include:

    • Types of capacitors used in power applications
    • Capacitor sizing and its effect on performance
    • Impact of capacitor ESR (Equivalent Series Resistance) on converter efficiency
    • Design techniques for optimizing capacitor usage in converters
  • Mod-04 Lec-10 Energy storage -- Inductor
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module emphasizes the importance of inductors as energy storage devices in switched mode power converters. Inductors help in energy transfer and regulation, making their design and selection critical.

    Topics include:

    • Types of inductors and their functions in converters
    • Inductor selection criteria based on application
    • Understanding core materials and their impact on performance
    • Design challenges and solutions for inductor circuits
  • Mod-05 Lec-11 Primitive Converter
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module introduces the concept of the primitive converter, which serves as a foundational element in understanding more complex converter designs. It provides a basic understanding of how power conversion begins.

    Topics covered include:

    • Basic principles of primitive converters
    • Operation modes and characteristics
    • Applications of primitive converters in real-world scenarios
    • Comparison with more advanced converter types
  • Mod-05 Lec-12 Non-Isolated converter - I
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module focuses on non-isolated converters, which are crucial for many applications in switched mode power conversion. These converters provide efficient voltage conversions without electrical isolation.

    Key areas of focus include:

    • Types of non-isolated converters and their applications
    • Design considerations for efficiency and performance
    • Comparison of different non-isolated converter topologies
    • Real-world examples and case studies
  • Mod-05 Lec-13 Non-Isolated converter -- II
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module delves into Non-Isolated Converters, providing an in-depth understanding of the various types and their applications. Key topics include:

    • Understanding the operation and applications of Primitive Converters.
    • Exploring Non-Isolated Converter Type I and II.
    • Analyzing the advantages and disadvantages of each converter type.

    Students will also engage in practical examples to solidify their understanding of non-isolated conversion techniques and their performance in power applications.

  • Mod-06 Lec-14 Isolated Converters - I
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module introduces students to the realm of Isolated Converters. It covers the fundamental principles and circuit topologies used in these systems. Key areas of focus include:

    • Overview of Isolated Converter types and their applications in various fields.
    • Understanding transformer operation and its significance in isolation.
    • Analyzing the efficiency and operational characteristics of Isolated Converters.

    Students will participate in hands-on activities to design and simulate isolated power converter circuits, enhancing their practical knowledge.

  • Mod-06 Lec-15 Isolated Converters -- II
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module continues the exploration of Isolated Converters, diving deeper into advanced concepts and design strategies. Key topics include:

    • Detailed analysis of Isolated Converter Type II.
    • Comparative study of different isolated converter designs.
    • Practical considerations and challenges in implementing isolated converters.

    Students will engage in problem-solving activities that involve designing and analyzing isolated converter circuits, solidifying their understanding of these complex systems.

  • Mod-07 Lec-16 Conduction Mode
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module provides a detailed examination of Conduction Modes in converters. Students will learn about:

    • The differences between Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM).
    • The impact of conduction modes on converter performance and efficiency.
    • Real-world applications and scenarios for each conduction mode.

    By analyzing practical examples, students will gain insights into the operational characteristics and design considerations of converters in various conduction modes.

  • Mod-07 Lec-17 Problem set - I
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module focuses on Problem Sets related to converter operation and design. Students will tackle various challenges that include:

    • Solving practical problems in non-isolated and isolated converters.
    • Applying theoretical knowledge to real-world scenarios.
    • Collaborative learning through group discussions and analysis of solutions.

    Through these exercises, students will enhance their problem-solving skills and gain confidence in their ability to design and analyze converters effectively.

  • Mod-07 Lec-18 Problem set -- II
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module concludes the course with an additional set of Problem Sets, reinforcing the knowledge gained throughout the course. Students will tackle:

    • Advanced problems focusing on isolated and non-isolated converters.
    • Real-world case studies to apply theoretical concepts.
    • Exercises aimed at enhancing design and analytical skills.

    By working on these problems, students will solidify their understanding and prepare for real-world applications in power conversion technologies.

  • Mod-08 Lec-19 Modeling DC-DC converters
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module focuses on modeling DC-DC converters, which are essential for efficient power management in various applications. Students will learn about:

    • The significance of modeling in power conversion.
    • Techniques for developing accurate models of DC-DC converters.
    • Real-world applications and implications of modeling in circuit design.

    Emphasis will be placed on understanding how these models can enhance performance analysis and control strategy development, ensuring students can effectively apply their knowledge in practical scenarios.

  • Mod-08 Lec-20 State space representation - I
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module introduces state space representation for switching converters, a critical tool for analyzing dynamic systems. Topics covered include:

    • The fundamentals of state space modeling.
    • Advantages of using state space representation in converter analysis.
    • Mathematical techniques to formulate state equations for various converter types.

    By the end of this module, students will be equipped with the skills to model converters using state space methods, enhancing their ability to design and control these systems.

  • Mod-08 Lec-21 State Space representation - II
    Prof. L. Umanand, Prof. V. Ramanarayanan

    Building on previous concepts, this module delves deeper into state space representation, focusing on advanced modeling techniques. Key elements include:

    • In-depth analysis of state equations for complex converter configurations.
    • Exploration of stability and controllability in power converters.
    • Application of state space models in real-world power systems.

    Students will engage in practical exercises to solidify their understanding of how to apply these concepts effectively in their projects.

  • Mod-08 Lec-22 Circuit Averaging - I
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module focuses on circuit averaging techniques, which are essential for analyzing switching converters' behavior over time. Students will learn:

    • The principles of circuit averaging and its importance in converter analysis.
    • How to apply averaging techniques to simplify complex switching waveforms.
    • Real-life examples of circuit averaging in converter design.

    By mastering these techniques, students will be better prepared to tackle dynamic performance issues in their designs.

  • Mod-08 Lec-23 Circuit Averaging - II
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module continues the exploration of circuit averaging, providing further insights into its applications in converter analysis. Key topics include:

    • Advanced circuit averaging methods.
    • Applications in predicting converter performance.
    • Hands-on exercises to reinforce theoretical knowledge.

    Students will work on practical problems, ensuring they can apply averaging techniques effectively in their own designs and analyses.

  • Mod-08 Lec-24 State Space Model of Boost Converter
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module introduces students to the state space model of the boost converter, a crucial component in power electronics. Topics include:

    • The fundamentals of boost converter operation and its significance.
    • State space modeling techniques specifically tailored for boost converters.
    • Performance analysis using the state space model.

    Through this module, students will gain insights into the operation and modeling of boost converters, preparing them for advanced design projects.

  • Mod-09 Lec-25 DC-DC converter controller
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module focuses on the fundamentals of DC-DC converter controllers, essential for regulating output voltage and current in switching power converters.

    Key topics include:

    • Understanding the role of controllers in DC-DC converters.
    • Types of controllers used for different applications.
    • The importance of feedback in maintaining stability.

    By the end of this module, students will grasp how various controller configurations impact converter performance and efficiency.

  • Mod-09 Lec-26 Controller Structure
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module delves into the structure of controllers for DC-DC converters, emphasizing the design principles and components that ensure optimal performance.

    Topics covered include:

    • Components of controller architecture.
    • Feedback loops and their significance.
    • Different controller types and their applications.

    Students will learn how to design a controller that meets specific performance criteria while maintaining system stability.

  • Mod-09 Lec-27 PID Controller - I
    Prof. L. Umanand, Prof. V. Ramanarayanan

    The first part of the PID Controller module introduces the Proportional-Integral-Derivative control strategy, a fundamental approach in control systems.

    In this module, students will explore:

    • Theoretical foundations of PID control.
    • How each component (Proportional, Integral, Derivative) contributes to system behavior.
    • Application examples in DC-DC converters.

    This foundational knowledge will prepare students for more advanced PID control strategies in subsequent modules.

  • Mod-09 Lec-28 PID Controller - II
    Prof. L. Umanand, Prof. V. Ramanarayanan

    Building on the previous module, this part of the PID Controller series focuses on the advanced concepts and tuning of PID controllers for optimal performance.

    Key areas of study include:

    • Advanced tuning methods for PID controllers.
    • Common challenges and solutions in PID control.
    • Practical applications and case studies.

    The module aims to equip students with the skills to implement and fine-tune PID controllers in real-world scenarios.

  • Mod-09 Lec-29 PID Controller - III
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module continues the exploration of PID controllers, focusing on the final aspects of PID design and implementation techniques.

    Topics will include:

    • Implementation challenges in real systems.
    • Testing and validation of PID control strategies.
    • Integration with DC-DC converters.

    Students will gain hands-on experience and knowledge to confidently implement PID controllers in various applications.

  • Mod-09 Lec-30 Implementation of PID controller
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module provides practical insights into implementing PID controllers in DC-DC converters, focusing on real-world challenges and solutions.

    Key learning objectives include:

    • Understanding real-world constraints in controller design.
    • Applying theoretical knowledge to practical scenarios.
    • Evaluating the performance of implemented controllers.

    Students will work on sample projects that reinforce their understanding of PID controller implementation.

  • Mod-10 Lec-31 Pulse Width Modulator
    Prof. L. Umanand, Prof. V. Ramanarayanan

    The Pulse Width Modulator (PWM) module provides a comprehensive overview of PWM techniques utilized in switched mode power converters. It covers the fundamental principles of PWM, including its significance in regulating output voltage and current. Key topics include:

    • Understanding the operation of PWM in controlling power delivery.
    • Various PWM techniques and their applications in DC-DC converters.
    • Design considerations for implementing PWM in practical circuits.
    • Examples of PWM signal generation and modulation strategies.

    Students will gain insights into how PWM can enhance the performance and efficiency of power conversion applications.

  • Mod-11 Lec-32 Controller Design - I
    Prof. L. Umanand, Prof. V. Ramanarayanan

    The Controller Design - I module introduces students to the fundamental principles of designing controllers for DC-DC converters. It emphasizes the importance of control in achieving desired performance metrics such as stability, transient response, and accuracy. Key focus areas include:

    • Overview of controller structures and their roles in power conversion.
    • Introduction to various controller types used in switched-mode power supplies.
    • Performance criteria for effective controller design.
    • Techniques for tuning controllers to optimize converter performance.

    This module will prepare students for more advanced controller design concepts in subsequent lessons.

  • Mod-11 Lec-33 Controller Design -- II
    Prof. L. Umanand, Prof. V. Ramanarayanan

    The Controller Design - II module builds upon the foundations laid in the previous module, delving deeper into advanced control strategies for DC-DC converters. This module covers:

    • In-depth analysis of PID controllers and their design.
    • Advanced tuning methods for PID controllers, including Ziegler-Nichols and other techniques.
    • Implementation challenges and solutions in real-world applications.
    • Case studies demonstrating effective controller design and optimization.

    Students will enhance their skills in controller design and learn how to apply theoretical knowledge to practical scenarios.

  • Mod-12 Lec-34 Controllers and Sensing Circuit
    Prof. L. Umanand, Prof. V. Ramanarayanan

    The Controllers and Sensing Circuit module examines the integration of sensing circuits with control systems for switched mode power converters. This vital module covers:

    • The role of sensing circuits in feedback control systems.
    • Common sensing methods and their applications in power regulation.
    • Design considerations for effective sensing circuit implementation.
    • Real-world examples of controllers paired with sensing circuits for enhanced control performance.

    Students will gain practical insights into how sensing circuits support stable and efficient power conversion.

  • Mod-12 Lec-35 Regulation of Multiple outputs - I
    Prof. L. Umanand, Prof. V. Ramanarayanan

    Regulation of Multiple Outputs - I module focuses on techniques and methods for regulating multiple outputs from a single power converter. It covers:

    • Challenges associated with multiple output regulation in power converters.
    • Design strategies for achieving balanced output voltages.
    • Control techniques that ensure stability and performance across multiple outputs.
    • Case studies demonstrating successful multiple output designs.

    This module prepares students to tackle complex converter designs that require multiple regulated outputs.

  • Mod-12 Lec-36 Regulation of Multiple outputs - II
    Prof. L. Umanand, Prof. V. Ramanarayanan

    The Regulation of Multiple Outputs - II module continues from the previous module, offering advanced insights into effective techniques for managing multiple outputs in power converters. This module includes:

    • Advanced control algorithms specifically designed for multi-output converters.
    • Analysis of load sharing among outputs to ensure uniform performance.
    • Techniques for fault tolerance and reliability in multi-output designs.
    • Hands-on projects that allow students to apply learned techniques to real-world scenarios.

    By the end of this module, students will be equipped with the skills to design robust and efficient multi-output power converters.

  • Mod-12 Lec-37 Current Control
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module focuses on current control techniques used in switched mode power converters. Understanding current control is vital for achieving optimal performance and stability in power conversion applications.

    The module will cover:

    • Fundamentals of current control in DC-DC converters
    • Implementation strategies for current feedback loops
    • Impact of current control on system performance
    • Real-world applications and case studies

    Additionally, students will engage with various problem sets that enhance their grasp of current regulation methods.

  • Mod-12 Lec-38 Unity Power Factor Converter
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module delves into Unity Power Factor Converters (UPFC), which are essential for improving the efficiency of power systems. UPFCs help reduce energy losses and improve the stability of electrical networks.

    Key topics include:

    • Principles of unity power factor operation
    • Design considerations for UPFCs
    • Control strategies to maintain unity power factor
    • Applications in renewable energy systems

    Through this module, students will learn the significance of maintaining a unity power factor and how it can be achieved in various power applications.

  • Mod-13 Lec-39 Magnetic Design
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module emphasizes magnetic design principles critical to the performance of switched mode power converters. Proper magnetic design ensures efficiency and reliability of the power conversion process.

    The topics covered include:

    • Types of magnetic components: inductors, transformers
    • Design methodologies for magnetic components
    • Core materials and their impact on performance
    • Simulation tools for magnetic design

    Students will engage in hands-on design projects that illustrate the intricacies of magnetic component design and its implications on overall system efficiency.

  • Mod-14 Lec-40 DC-DC Converter Design
    Prof. L. Umanand, Prof. V. Ramanarayanan

    This module covers the design aspects of DC-DC converters, emphasizing practical implementation and optimization techniques. Students will learn how to design converters that meet specific voltage and current requirements.

    Main areas of focus include:

    • Design principles for different DC-DC converter topologies
    • Selection of components based on performance criteria
    • Simulation and prototyping of converter designs
    • Testing and validation of designs against specifications

    By the end of this module, students will have the skills to design and construct efficient DC-DC converters suitable for a variety of applications.