Evaluation of a State Observer for Frequency Estimation in a Grid Tied Photovoltaic Inverter

Ana Karina Cabrera-Tobar; Oriol Gomis-Bellmunt; Joaquin  Carrasco; Mike Barnes

Evaluation of a State Observer for Frequency Estimation in a Grid Tied Photovoltaic Inverter

Ana Karina Cabrera-Tobar, Oriol Gomis-Bellmunt, Joaquin Carrasco, Mike Barnes

Universitat Politecnica de Catalunya

Research output: Contribution to conference › Paper › peer-review

Abstract

A phase locked loop (PLL) is commonly used to measure the electrical frequency deviations in PV grid tied inverters. However, this control is affected by sudden changes of power that usually happens with this type of power generation as the solar irradiance is intermittent. Thus, the aim of this paper is to estimate the frequency at the point of common coupling by using a state observer. The evaluation of the observer is developed in DIgSILENT PowerFactory under variable solar irradiance. The results show that the observer gives a more accurate frequency value than a PLL when quick changes of solar irradiance occur.

Original language	English
Publication status	Published - 12 Jun 2018
Event	18th IEEE International Conference on Environmental and Electrical Engineering. - Palermo, Italy Duration: 12 Jun 2018 → 15 Jun 2018

Conference

Conference	18th IEEE International Conference on Environmental and Electrical Engineering.
Country/Territory	Italy
City	Palermo
Period	12/06/18 → 15/06/18

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Cite this

@conference{02d8976725c140a88e365ec686908ed6,

title = "Evaluation of a State Observer for Frequency Estimation in a Grid Tied Photovoltaic Inverter",

abstract = "A phase locked loop (PLL) is commonly used to measure the electrical frequency deviations in PV grid tied inverters. However, this control is affected by sudden changes of power that usually happens with this type of power generation as the solar irradiance is intermittent. Thus, the aim of this paper is to estimate the frequency at the point of common coupling by using a state observer. The evaluation of the observer is developed in DIgSILENT PowerFactory under variable solar irradiance. The results show that the observer gives a more accurate frequency value than a PLL when quick changes of solar irradiance occur.",

author = "Cabrera-Tobar, {Ana Karina} and Oriol Gomis-Bellmunt and Joaquin Carrasco and Mike Barnes",

year = "2018",

month = jun,

day = "12",

language = "English",

note = "18th IEEE International Conference on Environmental and Electrical Engineering.<br/> ; Conference date: 12-06-2018 Through 15-06-2018",

}

TY - CONF

T1 - Evaluation of a State Observer for Frequency Estimation in a Grid Tied Photovoltaic Inverter

AU - Cabrera-Tobar, Ana Karina

AU - Gomis-Bellmunt, Oriol

AU - Carrasco, Joaquin

AU - Barnes, Mike

PY - 2018/6/12

Y1 - 2018/6/12

N2 - A phase locked loop (PLL) is commonly used to measure the electrical frequency deviations in PV grid tied inverters. However, this control is affected by sudden changes of power that usually happens with this type of power generation as the solar irradiance is intermittent. Thus, the aim of this paper is to estimate the frequency at the point of common coupling by using a state observer. The evaluation of the observer is developed in DIgSILENT PowerFactory under variable solar irradiance. The results show that the observer gives a more accurate frequency value than a PLL when quick changes of solar irradiance occur.

AB - A phase locked loop (PLL) is commonly used to measure the electrical frequency deviations in PV grid tied inverters. However, this control is affected by sudden changes of power that usually happens with this type of power generation as the solar irradiance is intermittent. Thus, the aim of this paper is to estimate the frequency at the point of common coupling by using a state observer. The evaluation of the observer is developed in DIgSILENT PowerFactory under variable solar irradiance. The results show that the observer gives a more accurate frequency value than a PLL when quick changes of solar irradiance occur.

M3 - Paper

T2 - 18th IEEE International Conference on Environmental and Electrical Engineering.<br/>

Y2 - 12 June 2018 through 15 June 2018

ER -

Evaluation of a State Observer for Frequency Estimation in a Grid Tied Photovoltaic Inverter

Abstract

Conference

UN SDGs

Fingerprint

Cite this