Results 31 to 40 of about 1,240 (203)
Adjustable unbalanced current controller for tranformerless PV generation to suppress DC voltage ripples of inverter in low‐voltage ride‐through (LVRT) operation [PDF]
IET Renewable Power Generation, 2022 Abstract Low voltage ride‐trough (LVRT) feature is compulsory for each grid‐connected inverter to support the grid by injecting reactive power in low voltage conditions. It is well known that the operation of an inverter in a normal grid condition is different from its operation in a faulty one.
Kadri, Afshin +3 more
openaire +4 more sources
Energies, 2020 Due to the increase in DC load and DC Power generation, the need for DC power system is emerging. Accordingly, FRT (fault ride through) and LVRT (low voltage ride through), which are related regulations for renewable energy sources, have been enacted ...
Sang-Jae Choi, Sung-Hun Lim
doaj +1 more source
A General Mathematical Model for LVRT Capability Assessment of DER-Penetrated Distribution Networks
IEEE Access, 2020 Low voltage ride through (LVRT) is one of the indispensable issues of recent decade in the context of grid codes. LVRT stands for the ability of a generation facility to stay connected during the voltage dip.
Pouya Salyani +4 more
doaj +1 more source
An improved low‐voltage ride‐through (LVRT) strategy for PV‐based grid connected inverter using instantaneous power theory [PDF]
IET Generation, Transmission & Distribution, 2020 Abstract This paper presents a low‐voltage ride‐through technique for large‐scale grid tied photovoltaic converters using instantaneous power theory. The control strategy, based on instantaneous power theory, can directly calculate the active and reactive component of currents using measured grid voltage and currents and generate ...
Soubhik Bagchi +3 more
openaire +2 more sources
Enhanced Low Voltage Ride Through Capability for Grid Connected Wind Energy Conversion System [PDF]
, 2021 It is obvious that the current era has received much attention in the fields of science and technology, besides the continuous endeavor to provide environmentally friendly and resource-saving alternatives for conventional energy conversion systems.
Althomali, Raed, Alsumiri, Mohammed
core +1 more source
, 2015 This paper presents a simple methodology to improve the low voltage ride-through (LVRT) capability of Doubly Fed Induction Generator (DFIG) based wind turbines in order to ride through higher voltage sags and durations.
Ahmed M. A. Haidar +6 more
core +2 more sources
Wind turbine level energy storage for low voltage ride through (LVRT) support
2014 IEEE Symposium on Power Electronics and Machines for Wind and Water Applications, 2014 Variable wind speed leads to variable wind power generation, voltage fluctuations, and frequency deviations, which are the main problems related to wind energy integration into a grid. These problems become more evident in weak grids. In addition, wind farms have to take the grid problems into consideration and have to provide support during grid ...
Ali Yousef, Adel Nasiri, Omar Abdelbaqi
openaire +2 more sources
Active Power Control of Hydraulic Wind Turbines during Low Voltage Ride-Through (LVRT) Based on Hierarchical Control [PDF]
Energies, 2019 To improve the power grid adaptability and low voltage ride-through (LVRT) capability of hydraulic wind turbines (HWT), an LVRT control method based on hierarchical control is proposed for the energy regulation of HWT. The method includes a top-level machine-controlled paddle, mid-level control based on variable motor swash plate angle, and an ...
Chao Ai +4 more
openaire +2 more sources
Energies, 2021 With an increasing share in energy production, wind turbines have to fulfill strict grid requirements to support the grid in case of discontinuities. Here LVRT (Low Voltage Ride Through) compliance is one essential part, where the turbine has to stay ...
Mathias Arbeiter +2 more
doaj +1 more source
A PRACTICAL METHOD FOR IMPROVING LOW VOLTAGE RIDE-THROUGH CAPABILITY OF INVERTER-BASED AC MICROGRID
, 2023 When the inverter-based microgrid operates in grid-tied mode, the low voltage ride-through (LVRT) capability presents a challenge in its inverter controller design to support the grid voltage.
Langella R. +3 more
core +1 more source