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bevrani h grid connected converters modeling stability 2022

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Textbook in PDF format Foreword Preface Acknowledgments Concepts, fundamentals, modeling, and dynamics analysis An introduction to renewable integrated power grids Modern power grids Renewable energy sources and distributed generators Grid connected converters Renewable integrated power grids: characteristics and challenges Current trends and future directions Dynamic impact of GCCs GCC-based demand response GCC-based virtual inertia Future research needs Summary References Grid connected converters: fundamentals and configurations General structure and essentials General structure and classification Reference frames The αβ-frame The dq-frame Configurations and applications Basic control loops Control system for grid-following GCC Control system for grid-forming GCC Dynamic characteristics emulation Review and applications An example: virtual resistor Relevant grid codes and standards Grid code and standards requirements Protection, power quality and synchronization Grid voltage support Grid frequency support Summary References Modeling and dynamic performance of grid connected converters A background and overview Active power and frequency response modeling Reactive power and voltage response modeling Active power and frequency response model Typical GCC and relevant control system Modeling methodology Step-response analysis and evaluation Response to active power reference change Ripple attenuation ability Experimental verification Reactive power and voltage response model Typical GCC and relevant control system Inner VI-based control Inner Q-based control Output impedance models Modeling methodology Step-response analysis and evaluation Comprehensive and reduced GCC models A comprehensive model Reduced dynamic models Example 1: focusing on LFC filter dynamics Example 2: LFC filter and a virtual resistor Example 3: LFC filter and three virtual resistors Example 4: using dq-frame Summary References Grid connected converters: stability assessment and sensitivity analysis Stability analysis methods: an overview Frequency domain Time domain Impedance-based stability analysis methods Analytical analysis method Frequency-analysis simulator Time-domain simulation-based frequency-scan method Passivity-based stability analysis Poincaré map-based stability analysis method Stability analysis using closed-loop eigenvalues/poles graph Stability analysis of P-ω model Stability analysis of Q-V model A frequency characteristics-based stability assessment Impedance matrix-based formulation Computation of frequency characteristics Preliminaries Proposed method Application example Stability analysis Perturbation impact analysis Extension of method for nonlinear function blocks Stamps of nonlinear function blocks Application example Poincaré map-based stability assessment Stability analysis methodology Averaged analysis of a linear GCC with state feedback controller Principle of the shooting method Computation of sensitivity matrix Generalized sensitivity matrix computation for analog control Generalized sensitivity matrix computation for digital control Application example State-space equations of the GCC system Control principle of the GCC with sinusoidal compensator Dedicated simulator in the MATLAB environment Stability analysis results Sensitivity analysis Summary References Dynamic impacts modeling and evaluation of grid connected converters Dynamic timescales and stability classification Dynamic timescales and stability in renewable integrated power grids Impact of GCCs on power grid stability GCC stability A dynamic model for the GCCs integration evaluation Multi-generator power grid description Unified GCC-based DGs integrated power grid model Model simplification Simulation study An updated frequency response model for a GCC-based DGs integrated power system Summary References Control synthesis for stabilizing and performance enhancement Control structure of grid connected converters Overall control structure Grid-following-based GCC Grid-forming-based GCC Main control loops and objectives P-ω droop and relevant control loops Q-V droop and relevant control loops VI-based control and Q-based control Comparison of VI-based control and Q based control Feedforward and feedback control schemes A GCC example Feedforward and feedback control loops Virtual synchronous generator Rotational inertia reduction in modern power grids Virtual synchronous generator concept and structure Summary References Stability and performance improvement of grid connected converters Oscillation damping enhancement methods Discrete state-space model of GCC Digital control scheme Damping improvement using virtual impedance Simulation and experimental results Time delay compensation Proposed method State estimation enhancement Experimental results for damping control with delay compensation Extension to a three-phase GCC Passivity-based stabilization Passivity-based stabilizing Design examples A single-phase GCC example A 3-phase GCC example Summary References Advanced control synthesis methods for grid connected converters Optimal control design Case study and dynamic modeling Optimal voltage controller design Application example Digital optimal control design Case study and discrete dynamic model Design of sinusoidal compensator and state-feedback gains Optimal tuning of control system parameters Estimation of state variables by the minimum-order observer Lyapunov-based digital control design Lyapunov-based control synthesis methodology Reference generator Simulation and experimental results Stability analysis Model predictive control-based controller design An overview Finite control set model predictive control Types of cost function Weighting factor design The proposed FCS-MPC-based VSG control Overall framework VSG control Current command generation for the FCS-MPC FCS-MPC synthesis Analysis of PLL impact on the system stability and performance Simulation and experimental results Robust damping control Case study and dynamic modeling Design methodology Theoretical background Synthesis framework Simulation and experimental results Simulation result Experimental verification Summary References Grid connected converters for grid dynamics shaping Flexible grid connected converters for dynamics emulations Virtual dynamic shaping Virtual impedance loop Experimental verification Virtual Q-droop and voltage estimator Virtual governor and inertia Virtual dynamics for power quality enhancement Control methodology Simulation results Grid ancillary service support Frequency regulation support from a motor drive system Overall control scheme VSG-based GCC control Experimental results PV-based P−ω control support Dynamic shaping in power grids with HVDC and low-frequency transmission systems Dynamic shaping in power grids with HVDC Dynamic shaping in power grids with low-frequency transmission systems LFAC system Addressed control scheme Simulation results Summary References Index

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bevrani h grid connected converters modeling stability 2022