Results 31 to 40 of about 167,660 (319)
IET Generation, Transmission & Distribution, 2023 The virtual synchronous generator (VSG) is a good solution for stabilizing the power system with high penetration of renewable energy. However, in case of serious unbalanced voltage disturbance/fault, the conventional VSG may lose voltage, inertia, and ...
Yu Wang +7 more
doaj +1 more source
PI-based controller for low-power distributed inverters to maximise reactive current injection while avoiding over voltage during voltage sags [PDF]
, 2018 This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright.
Camacho Santiago, Antonio +4 more
core +2 more sources
IET Power Electronics, 2023 The operational stability of grid‐connected converters is affected by unbalanced grid voltage, which often leads to overcurrent. The traditional control method maintains the grid‐into current within the rated limit by adjusting the current reference ...
Qi Wang, Peng Yu, Peng Wang
doaj +1 more source
IET Generation, Transmission & Distribution, 2021 This paper proposes an effective fault management scheme for medium‐voltage direct current (MVDC) networks, which includes a virtual‐impedance‐based fault current limiter (VI‐FCL) on the DC side and a positive‐negative‐sequence (PNS) control scheme on ...
Dongsen Sun +3 more
doaj +1 more source
Demonstration of sustained and useful converter responses during balanced and unbalanced faults in microgrids [PDF]
, 2012 In large power grids where converter penetration is presently low and the network impedance is predominantly reactive, the required response from converters during faults is presently specified by phrases such as “maximum reactive output”.
Burt, Graeme +4 more
core +1 more source
Power control strategies during voltage sags according to Spanish grid code [PDF]
, 2018 In order to connect any power converters into the grid there are some grid requirements to insure the safe operation of the grid. So, the control of the converters especially during abnormal condition e.g. during voltage sags is
Bakkar, Mostafa +4 more
core +1 more source
Direct power control of voltage source inverters with unbalanced grid voltages
IET Power Electronics, 2008 A new approach of direct power control (DPC) of a voltage source inverter for achieving symmetrical grid currents under unbalanced grid voltage conditions is presented. In these situations, negative sequence components appear on the grid voltage vector, leading to distorted currents if the power is maintained constant. Nevertheless, sinusoidal balanced
J. Eloy-García +2 more
openaire +1 more source
Power Quality Improvement Wind Energy System Using Cascaded Multilevel Inverter [PDF]
, 2013 In this paper, a wind energy conversion system based on a cascaded H-bridge multilevel inverter (CHBMLI) topology has been proposed to be used for the grid interface of large split winding alternators (SWAs).
A. S., Kumar, J.S., Sathiyanarayanan
core +2 more sources
Voltage Profile Improvement in Unbalanced Distribution Grids by Sequential Quadratic Programming
2023 IEEE AFRICON, 2023 The implementation of renewable energy resources (RERs) such as photovoltaic (PV) units and wind turbines (WTs) has been intensively used on active distribution networks (ADNs) due to their significant environmental, technical, and economic benefits.
Bamatraf, M +3 more
openaire +3 more sources
Adaptive Vectorial Filter for Grid Synchronization of Power Converters Under Unbalanced and/or Distorted Grid Conditions [PDF]
, 2014 This paper presents a new synchronization scheme for detecting multiple positive-/negative-sequence frequency harmonics in three-phase systems for grid-connected power converters.
Carrasco Solís, Juan Manuel +4 more
core +1 more source