Abstract
This paper introduces a new method for tuning the power filter for enhancing the stability and transient response of a droop controlled microgrid system based on inverter-interfaced Distributed Generators (DGs). To tackle the stability issue of such a microgrid, faster and more robust droop controllers are required. Thus, the delay and phase shift imposed by the Low Pass Filter (LPF), which is incorporated in the power controller of inverter-based DGs, should also be minimized. In this context, the purpose of this paper is two-fold: a) to show that a tunable power filter with a cutoff frequency below the fundamental frequency can improve the performance of an islanded droop controlled DG microgrid, and b) to suggest a filter tuning method. A comprehensive study is carried out by means of small signal analysis in order to assess the impact of the power filter on the system's eigenvalues. The mathematical analysis shows that the proposed technique results in efficient damping of oscillations following system disturbances. The simulation results verify the superior performance of the proposed approach in terms of improving the transient response and the small signal stability of the islanded DG microgrid during the startup and load excursion operations.
| Original language | English |
|---|---|
| Article number | 6939845 |
| Journal | IEEE Power and Energy Society General Meeting |
| Volume | 2014-October |
| Issue number | October |
| DOIs | |
| Publication status | Published - Oct 29 2014 |
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Keywords
- Distributed Generation
- Droop Control
- Inverter Model
- Microgrid
- Power Control
- Small-Signal Stability
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Nuclear Energy and Engineering
- Renewable Energy, Sustainability and the Environment
- Electrical and Electronic Engineering
Cite this
Enhancement of islanded droop-controlled microgrid performance via power filter design. / Nikolakakos, I. P.; Al-Zyoud, I. A.; Zeineldin, H. H.; El-Moursi, M. S.; Al-Hinai, A. S.
In: IEEE Power and Energy Society General Meeting, Vol. 2014-October, No. October, 6939845, 29.10.2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhancement of islanded droop-controlled microgrid performance via power filter design
AU - Nikolakakos, I. P.
AU - Al-Zyoud, I. A.
AU - Zeineldin, H. H.
AU - El-Moursi, M. S.
AU - Al-Hinai, A. S.
PY - 2014/10/29
Y1 - 2014/10/29
N2 - This paper introduces a new method for tuning the power filter for enhancing the stability and transient response of a droop controlled microgrid system based on inverter-interfaced Distributed Generators (DGs). To tackle the stability issue of such a microgrid, faster and more robust droop controllers are required. Thus, the delay and phase shift imposed by the Low Pass Filter (LPF), which is incorporated in the power controller of inverter-based DGs, should also be minimized. In this context, the purpose of this paper is two-fold: a) to show that a tunable power filter with a cutoff frequency below the fundamental frequency can improve the performance of an islanded droop controlled DG microgrid, and b) to suggest a filter tuning method. A comprehensive study is carried out by means of small signal analysis in order to assess the impact of the power filter on the system's eigenvalues. The mathematical analysis shows that the proposed technique results in efficient damping of oscillations following system disturbances. The simulation results verify the superior performance of the proposed approach in terms of improving the transient response and the small signal stability of the islanded DG microgrid during the startup and load excursion operations.
AB - This paper introduces a new method for tuning the power filter for enhancing the stability and transient response of a droop controlled microgrid system based on inverter-interfaced Distributed Generators (DGs). To tackle the stability issue of such a microgrid, faster and more robust droop controllers are required. Thus, the delay and phase shift imposed by the Low Pass Filter (LPF), which is incorporated in the power controller of inverter-based DGs, should also be minimized. In this context, the purpose of this paper is two-fold: a) to show that a tunable power filter with a cutoff frequency below the fundamental frequency can improve the performance of an islanded droop controlled DG microgrid, and b) to suggest a filter tuning method. A comprehensive study is carried out by means of small signal analysis in order to assess the impact of the power filter on the system's eigenvalues. The mathematical analysis shows that the proposed technique results in efficient damping of oscillations following system disturbances. The simulation results verify the superior performance of the proposed approach in terms of improving the transient response and the small signal stability of the islanded DG microgrid during the startup and load excursion operations.
KW - Distributed Generation
KW - Droop Control
KW - Inverter Model
KW - Microgrid
KW - Power Control
KW - Small-Signal Stability
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U2 - 10.1109/PESGM.2014.6939845
DO - 10.1109/PESGM.2014.6939845
M3 - Article
VL - 2014-October
JO - IEEE Power and Energy Society General Meeting
JF - IEEE Power and Energy Society General Meeting
SN - 1944-9925
IS - October
M1 - 6939845
ER -