Results 271 to 280 of about 7,648 (314)
Some of the next articles are maybe not open access.
Nonlinear supersets to droop control
2015 IEEE 16th Workshop on Control and Modeling for Power Electronics (COMPEL), 2015This paper offers a suite of extensions to Virtual Oscillator Control — a time-domain control method for islanded inverters whereby they are controlled to emulate the dynamics of weakly nonlinear limit-cycle oscillators. First, we develop a coordinate transformation to derive the PWM switching signals from the oscillator dynamic states in a manner that
Mohit Sinha +4 more
openaire +1 more source
Droop control of a multifunctional PV inverter
2008 IEEE International Symposium on Industrial Electronics, 2008Implementation of ancillary services in photovoltaic systems could facilitate their penetration in power systems. PV converters can be designed to improve grid power quality using power conditioning functionalities. This paper presents a single-phase photovoltaic system which provides grid voltage support at fundamental frequency. The proposed topology
MASTROMAURO, ROSA ANNA +4 more
openaire +2 more sources
Distributed secondary control for droop-controlled autonomous microgrid
2015 34th Chinese Control Conference (CCC), 2015Motivated by the cooperative control theory of multi-agent systems, we study the distributed secondary voltage and frequency control problem in a lossy droop-controlled autonomous microgrid. At first, a distributed cooperative control algorithms is designed to synchronize the voltage of each generation unit to the reference value in finite time.
Chen Gang, Guo Zhijun
openaire +1 more source
Droop-free control for networked microgrids
2016 IEEE Conference on Control Applications (CCA), 2016This paper presents a frequency control strategy for networked micogrids. Applying a hierarchical control structure, the usual droop-control for AC microgrids is replaced by a droop-free paradigm that acts as a first and second level control. To control the frequency of the networked microgrid system, a third control level is introduced to control the ...
Vladimir Toro, Eduardo Mojica-Nava
openaire +1 more source
Droop controller comparison for AC microgrids
2016 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC), 2016The aim of this study is to analyze and compare three droop controller schemes to regulate the operation of a microgrid. Three droop control schemes are selected because of their capability to regulate voltage, frequency and power sharing without using communication links and complex measurement systems.
Marco Gutiérrez +4 more
openaire +1 more source
Droop control for islanded microgrids
2013 IEEE Power & Energy Society General Meeting, 2013This paper contains an explanation of droop control to distribute load changes amongst inverter-sourced generators in an islanded microgrid. As the load within the microgrid changes, the inverter-sourced generators will share this change in load but this paper shows that the change will be arbitrary and droop achieves a regulated change.
openaire +1 more source
DQ-axis current-based droop controller
2017 North American Power Symposium (NAPS), 2017During an islanding operation of a microgrid comprised of multiple distributed generation (DG) units serving a load, DG units interfaced with voltage-sourced converters (VSC) are regarded as the only energy sources. Hence, DG units should be controlled to form the frequency and voltage, pick up the full load, and respond to any load changes ...
Ibrahim Alsaleh, Lingling Fan
openaire +1 more source
Droop-Controlled Inverters are Kuramoto Oscillators
IFAC Proceedings Volumes, 2012Abstract Motivated by the recent interest in smart grid technology and by the push towards distributed and renewable energy, we study the parallel operation of DC/AC inverters in a lossless microgrid. We show that the parallel interconnection of DC/AC inverters equipped with conventional droop controllers is precisely described by the Kuramoto model ...
John W. Simpson-Porco +2 more
openaire +1 more source
2021
Aspects of non-linear droop control are described herein. In one embodiment, a system includes a first power converter or source configured to provide power to a bus, a second power converter or source configured to provide power to the bus, and a load electrically coupled to the bus.
openaire +1 more source
Aspects of non-linear droop control are described herein. In one embodiment, a system includes a first power converter or source configured to provide power to a bus, a second power converter or source configured to provide power to the bus, and a load electrically coupled to the bus.
openaire +1 more source
Various Droop Control Strategies in Microgrids
2019Droop control is a well-known strategy to control active power in power systems without internal communication. It is usually implemented on the conventional power plants to control the injected power of synchronous generators to the grid. As this strategy is local, there is no need to communication systems.
Zafari, P. +4 more
openaire +1 more source