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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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References
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Journal ArticleDOI

Design of a Wide Input Range DC–DC Converter With a Robust Power Control Scheme Suitable for Fuel Cell Power Conversion

TL;DR: The robust features of the proposed control system ensure a constant output DC voltage for a variety of load fluctuations, thus limiting the power being delivered by the fuel cell during a load transient.
Journal ArticleDOI

Synchronisation methods for grid-connected voltage source converters

TL;DR: In this paper, four different synchronisation methods for a voltage source converter connected to a three-phase grid are investigated, and the performance of the synchronization methods is studied by response characteristics of phase-shift steps, frequency steps and low-frequency grid voltage harmonics.
Proceedings ArticleDOI

Implementation and control of grid connected AC-DC-AC power converter for variable speed wind energy conversion system

TL;DR: In this article, a variable speed wind turbine system is developed for a variable power conversion system, where a DC-DC boosting chopper is utilized to maintain constant DC link voltage.
Proceedings ArticleDOI

An Adaptive Hysteresis-Band Current Control Technique of a Voltage-Fed Pwm Inverter for Machine Drive System

TL;DR: In this article, an adaptive hysteresis-band control method where the band is modulated with the system parameters to maintain the modulation frequency to be nearly constant is described, which is applicable to general AC motor drives and other types of load, an interior permanent magnet (IPM) synchronous machine load is considered.
Proceedings ArticleDOI

A novel current tracking method for active filters based on a sinusoidal internal model

TL;DR: In this paper, a new current control method based on the internal model principle in control theory is proposed for tracking an arbitrary number of harmonics; a DC component or a fundamental frequency component signal.
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