Course Details

Subject {L-T-P / C} : EE4201 : Modelling and Control of Power Electronics Systems {3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Somnath Maity

Syllabus

• Modeling: steady state analysis of dc/dc and dc/ac converters, dynamic analysis of converters, state space average modeling, PWM switch modeling and discrete time modeling, modeling of dc/dc converters operating in discontinuous conduction mode, dc/dc and dc/ac converters transfer functions.
• Overview of dc/dc power electronics circuits: Voltage-mode control, current-mode control, complexity of operation, complex behavior in power electronics computer and laboratory techniques for studying nonlinear behavior in switching power converters.
• Modeling of switching power converters for nonlinear dynamical analysis: Discrete-time modeling, general procedure for derivation of discrete-time iterative maps, method of averaging analysis of period-doubling bifurcation – CCM and DCM operations, smooth versus non-Smooth bifurcations, nonlinear dynamics of free-running converter systems, fast-scale analysis of power-factor-correction boost converters, intermittent chaotic operation in switching power converters.
• Nonlinear control of dc/dc Converters: Practical design of conventional hysteresis modulation-based sliding mode controllers for power converters, General approach of deriving fixed-frequency PWM-based sliding mode controller for power converters in discontinuous conduction mode, Design and implementation of fixed-frequency PWM-based sliding mode controller for power converters, Model predictive control of converters and inverters systems
• Control of power inverters: Power Quality Control - Current H8 repetitive control, voltage and current h8 repetitive control, Voltage H8 repetitive control with a frequency-adaptive mechanism, Voltage H8 repetitive control with a frequency-adaptive mechanism, Control of inverter output impedance, Power Flow Control-Current proportional–integral control, Current proportional-resonant control, Robust droop control with improved voltage quality, Synchronisation Conventional synchronisation techniques, Sinusoid-locked loops.

Course Objectives

  1. Understand various methods to analyse power electronics circuits and Systems

Course Outcomes

Gain skills to understand operational issues and limitations of practical converters in industrial applications

Essential Reading

  1. John G. Kassakian, Martin F. Schlecht, George C. Verghese, Principles of Power Electronics, Addison-Wesley Series
  2. Qing-Chang Zhong, Tomas Hornik, Control of Power Inverters in Renewable Energy and Smart Grid Integration, Wiley-IEEE Press

Supplementary Reading

  1. S.C. Tan, Y.M. Lai and C.K. Tse, Sliding Mode Control of Switching Power Converters: Techniques and Implementation, Boca Raton: CRC Press
  2. Soumitro Banerjee and George C. Verghese, Nonlinear Phenomena in Power Electronics: Bifurcations, Chaos, Control, and Applications, Wiley-IEEE Press