Syllabus

Module 1: Fundamentals of Power Converters and Steady-State Analysis (5L)
• Focus: Introduction and steady-state operation of power converters.
• Topics:
Overview of basic power converters: Buck, Boost, and Buck-Boost.
Steady-state operation: Volt-second and charge balance principles.
CCM and DCM operation: Ripple analysis and critical conditions.
Module 2: Design and Efficiency Analysis of Non-Isolated Converters (6L)
• Focus: Practical design, component selection, and loss evaluation for non-isolated converters.
• Topics:
Inductor and capacitor design for Buck, Boost, and Buck-Boost converters.
Advance topologies: SEPIC and CUK converters.
Loss analysis: Switching, conduction, and magnetic losses.
Parasitic effects and efficiency evaluation in non-isolated converters.
Module 3: Design and Operation of Isolated Converter Topologies (6L)
• Focus: Steady-state design of transformer-based converters.
• Topics:
Flyback, Forward, Half-Bridge, and Full-Bridge converters.
High-frequency transformer design: Core selection, flux balance, and practical considerations.
Efficiency analysis and loss calculations.
Application-specific design for isolated converters.
Module 4: Dynamic Modelling of Power Converters in CCM (6L)
• Focus: Understanding the dynamic behaviour of converters through different modelling techniques operating in CCM.
• Topics:
State-space averaging and circuit averaging techniques.
Transfer function derivation: Stability and frequency response analysis.
Validating dynamic models through simulations.
Module 5: Dynamic Modelling of Power Converters in DCM (4L)
• Focus: Understanding the dynamic behaviour of converters through circuit averaging techniques operating in DCM.
• Topics:
Circuit averaging technique.
Transfer function derivation for both reduced-order and full-order models.
Validating dynamic models through simulations.
Module 6: Control Strategies for Power Converters (8L)
• Focus: Design and implementation of various control techniques.
• Topics:
Voltage Mode Control (VMC): Voltage mode control algorithm, tuning of parameters for different standard control structures such as Lead, Lag, and Lead-Lag compensators, and industry-standard structures like Type-II and Type-III using desired closed-loop specifications.
Peak Current Mode Control (PCMC): Peak current mode control algorithm, modelling, ramp compensation, and sub-harmonic oscillation mitigation.
Average Current Mode Control (ACMC): Average current mode control algorithm, modelling, design, and practical implementation.
Multi-loop Control Strategies: Enhancing performance through simulations.

Design and select power stage components for various converter topologies based on specifications

Apply modeling techniques to develop small-signal models for power converters

Tune controller parameters for different compensator structures based on performance specifications

Apply theoretical knowledge to design closed-loop power converters that meet required steady-state and dynamic performance criteria

At the end of the course students will be able to
CO1:
Explain the operation of power converters and analyze their steady-state behavior in both CCM and DCM, considering ideal and non-ideal conditions
CO2:
Design the power stage for converter topologies by selecting components based on given specifications, and loss analysis to evaluate efficiency considering non-idealities.
CO3:
Apply different modeling techniques to analyze the dynamic behavior and derive transfer functions of power converters in both CCM and DCM, validating the results through simulations.
CO4:
Evaluate and calculate tuning parameters for different compensator structures for converters to meet closed-loop performance criteria and validate through simulations.
CO5:
Analyze and evaluate multi-loop control strategies to optimize power converter performance and validate through simulations.

Erickson and Maksimovic, Fundamentals of Power Electronics, Springer

P.T.Krein, Elements of Power Electronics, Oxford University Press

N. Mohan, T Undeland and W Robbins, Power Electronics Converters, Applications, and Design, Willey

M K Kazimierczuk, Pulse width modulated dc-dc power converters, Willey