Symmetrical Angle Switched Single-Phase and Three-Phase Rectifiers: Application to Micro Hydro Power Plants

H. Bory; L. Vazquez; H. Martínez; Y. Majanne

doi:10.1016/j.ifacol.2019.08.182

Symmetrical Angle Switched Single-Phase and Three-Phase Rectifiers: Application to Micro Hydro Power Plants

H. Bory, L. Vazquez, H. Martínez, Y. Majanne

Automation Technology and Mechanical Engineering

Research output: Contribution to journal › Conference article › Scientific › peer-review

1 Citation (Scopus)

Abstract

Micro-size hydro power plants are commonly used at remote areas to supply islanded AC micro-grids. A typical way to control grid frequency is to manipulate active power dissipated in ballast loads by AC/AC converters. However, conventional asymmetrically switched thyristor controlled converters consume reactive power degrading the power factor at the generator output and transmission efficiency. In this paper the operation of a symmetric angle switched, bridged three-phase rectifier and three single-phase rectifiers connected in series with ballast load, are studied to improve the power factor of the system. The objective is to evaluate the characteristics of these two configurations to improve the power factor by reactive power compensation in the frequency control of an islanded micro hydropower system.

Original language	English
Pages (from-to)	216 - 221
Journal	IFAC-PapersOnLine
Volume	52
Issue number	4
DOIs	https://doi.org/10.1016/j.ifacol.2019.08.182
Publication status	Published - 2019
Publication type	A1 Journal article-refereed

Keywords

controlled rectifiers
switching AC/AC converters
power factor
symmetrical switching

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10.1016/j.ifacol.2019.08.182

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@article{20c28747d9d44c1f8c0b0087a6c5eece,

title = "Symmetrical Angle Switched Single-Phase and Three-Phase Rectifiers: Application to Micro Hydro Power Plants",

abstract = "Micro-size hydro power plants are commonly used at remote areas to supply islanded AC micro-grids. A typical way to control grid frequency is to manipulate active power dissipated in ballast loads by AC/AC converters. However, conventional asymmetrically switched thyristor controlled converters consume reactive power degrading the power factor at the generator output and transmission efficiency. In this paper the operation of a symmetric angle switched, bridged three-phase rectifier and three single-phase rectifiers connected in series with ballast load, are studied to improve the power factor of the system. The objective is to evaluate the characteristics of these two configurations to improve the power factor by reactive power compensation in the frequency control of an islanded micro hydropower system.",

keywords = "controlled rectifiers, switching AC/AC converters, power factor, symmetrical switching",

author = "H. Bory and L. Vazquez and H. Mart{\'i}nez and Y. Majanne",

year = "2019",

doi = "10.1016/j.ifacol.2019.08.182",

language = "English",

volume = "52",

pages = "216 -- 221",

journal = "IFAC-PapersOnLine",

issn = "2405-8963",

publisher = "IFAC Secretariat",

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TY - JOUR

T1 - Symmetrical Angle Switched Single-Phase and Three-Phase Rectifiers: Application to Micro Hydro Power Plants

AU - Bory, H.

AU - Vazquez, L.

AU - Martínez, H.

AU - Majanne, Y.

PY - 2019

Y1 - 2019

N2 - Micro-size hydro power plants are commonly used at remote areas to supply islanded AC micro-grids. A typical way to control grid frequency is to manipulate active power dissipated in ballast loads by AC/AC converters. However, conventional asymmetrically switched thyristor controlled converters consume reactive power degrading the power factor at the generator output and transmission efficiency. In this paper the operation of a symmetric angle switched, bridged three-phase rectifier and three single-phase rectifiers connected in series with ballast load, are studied to improve the power factor of the system. The objective is to evaluate the characteristics of these two configurations to improve the power factor by reactive power compensation in the frequency control of an islanded micro hydropower system.

AB - Micro-size hydro power plants are commonly used at remote areas to supply islanded AC micro-grids. A typical way to control grid frequency is to manipulate active power dissipated in ballast loads by AC/AC converters. However, conventional asymmetrically switched thyristor controlled converters consume reactive power degrading the power factor at the generator output and transmission efficiency. In this paper the operation of a symmetric angle switched, bridged three-phase rectifier and three single-phase rectifiers connected in series with ballast load, are studied to improve the power factor of the system. The objective is to evaluate the characteristics of these two configurations to improve the power factor by reactive power compensation in the frequency control of an islanded micro hydropower system.

KW - controlled rectifiers

KW - switching AC/AC converters

KW - power factor

KW - symmetrical switching

U2 - 10.1016/j.ifacol.2019.08.182

DO - 10.1016/j.ifacol.2019.08.182

M3 - Conference article

SN - 2405-8963

VL - 52

SP - 216

EP - 221

JO - IFAC-PapersOnLine

JF - IFAC-PapersOnLine

IS - 4

ER -

Symmetrical Angle Switched Single-Phase and Three-Phase Rectifiers: Application to Micro Hydro Power Plants

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Keywords

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