scispace - formally typeset
Search or ask a question
Topic

Power optimizer

About: Power optimizer is a research topic. Over the lifetime, 10525 publications have been published within this topic receiving 199245 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, the effect of typically required fault ridethrough (FRT) and post-FRT measures of VSC-HVDC-connected offshore WPPs on the combined ac and HVDC system dynamics is investigated.
Abstract: Future power systems will contain more converter-based generation, among which are the voltage-source converter–high-voltage direct-current (VSC-HVDC)-connected offshore wind power plants (WPP). Their interaction with the onshore system influences power system dynamics in the transient stability timeframe. The respective protection and control methods which cause this interaction must be taken into account in grid-integration studies performed today. This paper gives insight into the effect of typically required fault ridethrough (FRT) and post-FRT measures of VSC-HVDC-connected offshore WPPs on the combined ac and HVDC system dynamics. Several important sensitivities are addressed, among which are: 1) FRT implementation, 2) the postfault active power-recovery rates, 3) the ac network dynamic characteristics, and 4) the HVDC topology. The analysis is first performed as a proof of concept on a small benchmark system, and subsequently generalized to a realistic dynamic model of the future Northwestern European power system. The results of this paper can be used as a reference for understanding the effects of large-scale VSC-HVDC-connected offshore WPPs on the stability of the onshore interconnected power systems.

59 citations

Proceedings ArticleDOI
24 Dec 2012
TL;DR: Comparison of different performance parameters such as: tracking efficiency and response time of the system shows that the proposed method gives higher efficiency and better performance than the conventional perturbation and observation method.
Abstract: Maximum power point trackers are so important in photovoltaic systems to increase their efficiency. Many methods have been proposed to achieve the maximum power that the PV modules are capable of producing under different weather conditions. This paper proposed an intelligent method for maximum power point tracking based on fuzzy logic controller. The system consists of a photovoltaic solar module connected to a DC-DC Buck-boost converter. The system has been experienced under disturbance in the photovoltaic temperature and irradiation level. The simulation results show that the proposed maximum power tracker could track the maximum power accurately and successfully in all condition tested. Comparison of different performance parameters such as: tracking efficiency and response time of the system shows that the proposed method gives higher efficiency and better performance than the conventional perturbation and observation method.

59 citations

Journal ArticleDOI
TL;DR: In this paper, a medium-voltage solid-state transformer (SST)-interfaced permanent magnet synchronous generator system with integrated active power management and reactive power compensation functions is presented.
Abstract: The higher penetration of wind energy poses increasing demand for grid support and power management functions of a wind energy conversion system (WECS). This paper investigates a medium-voltage solid-state transformer (SST)-interfaced permanent magnet synchronous generator system with integrated active power management and reactive power compensation functions. Specifically, a WECS consisting of wind turbines, SSTs, and dc loads is presented. In addition, a distributed power management algorithm is proposed for a dc network with local wind turbine controls incorporated to achieve a self-contained power-balanced condition without the need for energy storage or communication devices. Scenarios considered include the grid-connected mode, the islanding mode, and the mode transitions. Simulation results are provided to verify the effectiveness of the proposed strategy. Additionally, the concept is experimentally verified using a scaled-down laboratory prototype.

59 citations

Journal ArticleDOI
TL;DR: In this article, a case study of a wind farm composed of four wind turbines based on synchronous generators is presented, where it is shown that the variable frequency wind farm concept with a single power converter obtains 92% of the total available power.

59 citations

Patent
05 Jul 2007
TL;DR: In this article, a method for operating a wind energy installation was proposed, where the wind energy system is switched off following the release of a deactivation signal by a safety cut-out device (20) which logically overrides a management system.
Abstract: The invention relates to a method for operating a wind energy installation, whereby said wind energy installation (10) is especially switched off following the release of a deactivation signal by a safety cut-out device (20) which logically overrides a management system. Said method is improved in that, following a safety cut-out, the wind energy installation (10) is reactivated by means of an operating device (41) which is spatially separated from the wind energy installation (10). The invention further relates to an energy supply system comprising at least one wind energy installation (10), to a safety chain on a wind energy installation, and to a wind energy installation.

58 citations


Network Information
Related Topics (5)
Electric power system
133K papers, 1.7M citations
94% related
Wind power
99K papers, 1.5M citations
89% related
Voltage
296.3K papers, 1.7M citations
86% related
Capacitor
166.6K papers, 1.4M citations
85% related
Control theory
299.6K papers, 3.1M citations
85% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202363
2022144
202112
202017
201924
201850