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Overview of Control and Grid Synchronization for Distributed Power Generation Systems

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TLDR
An overview of the structures for the DPGS based on fuel cell, photovoltaic, and wind turbines is given and the possibility of compensation for low-order harmonics is discussed.
Abstract
Renewable energy sources like wind, sun, and hydro are seen as a reliable alternative to the traditional energy sources such as oil, natural gas, or coal. Distributed power generation systems (DPGSs) based on renewable energy sources experience a large development worldwide, with Germany, Denmark, Japan, and USA as leaders in the development in this field. Due to the increasing number of DPGSs connected to the utility network, new and stricter standards in respect to power quality, safe running, and islanding protection are issued. As a consequence, the control of distributed generation systems should be improved to meet the requirements for grid interconnection. This paper gives an overview of the structures for the DPGS based on fuel cell, photovoltaic, and wind turbines. In addition, control structures of the grid-side converter are presented, and the possibility of compensation for low-order harmonics is also discussed. Moreover, control strategies when running on grid faults are treated. This paper ends up with an overview of synchronization methods and a discussion about their importance in the control

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Citations
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A nonlinear disturbance observer based DC bus voltage control for a hybrid AC/DC microgrid

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Impact of VSC Control Strategies and Incorporation of Synchronous Condensers on Distance Protection Under Unbalanced Faults

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Benchmarking of Constant Power Generation Strategies for Single-Phase Grid-Connected Photovoltaic Systems

TL;DR: In this paper, the perturb and observe algorithm (P&O-CPG) was proposed to achieve a constant power generation operation in grid-connected photovoltaic (PV) systems.
Journal ArticleDOI

An Integrated Trap-LCL Filter With Reduced Current Harmonics for Grid-Connected Converters Under Weak Grid Conditions

TL;DR: In this paper, a trap-LCL filter with its parallel resonant LC-trap located on the converter side, named as LT-C - L filter, is presented. And the model and analysis presented in this paper show that the LS-L filter can be the most promising trap filter due to its advantages such as high roll-off rate, robustness against parametric variations of grid impedance and passive damper, satisfactory harmonic attenuation at the switching frequency, reduction of converter current total-harmonic-distortion, and flexible design of filter components through magnetic integration.
References
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Book

Fundamentals of Power Electronics

TL;DR: Converters in Equilibrium, Steady-State Equivalent Circuit Modeling, Losses, and Efficiency, and Power and Harmonics in Nonsinusoidal Systems.
BookDOI

Wind Power in Power Systems

Thomas Ackermann
- 01 Jan 2005 - 
TL;DR: In this article, the authors focus on the generation of electricity from clean and renewable sources, and show that wind energy has become the world's fastest growing energy source, and that renewable energy is the most promising energy source.
Journal ArticleDOI

Power electronics as efficient interface in dispersed power generation systems

TL;DR: In this article, power electronics, the technology of efficiently processing electric power, play an essential part in the integration of the dispersed generation units for good efficiency and high performance of the power systems.
Journal Article

Power Electronics as Efficient Interface in Dispersed Power Generation Systems

TL;DR: In this article, power electronics, the technology of efficiently processing electric power, play an essential part in the integration of the dispersed generation units for good efficiency and high performance of the power systems.
Book

Understanding Power Quality Problems: Voltage Sags and Interruptions

Math Bollen
TL;DR: This is the first book to offer in-depth analysis of voltage sags and interruptions and to show how to apply mathematical techniques for practical solutions to these disturbances.
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