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A sensor-less sliding mode control scheme for a stand-alone wound rotor synchronous generator under unbalanced load conditions
(2004-09)
Article
Restricted access - publisher's policyThis paper presents a sliding mode control for a wound rotor synchronous machine acting as an isolated generator connected to an unbalanced load. In order to simplify the control methodology, the standard dq-model of the ... -
Flicker mitigation by reactive power control in wind farm with doubly fed induction generators
(2014-02)
Article
Restricted access - publisher's policyThis paper presents a novel wind farm control with the purpose to mitigate the flicker emission of doubly fed induction generators. The presented control strategy is implemented in a wind farm connected to a distribution ... -
Digital control of a power conditioner for fuel cell/super-capacitor hybrid system
(Taylor & Francis, 2014-01-25)
Article
Restricted access - publisher's policyThis article proposes a digital control scheme to operate a proton exchange membrane fuel cell module of 1.2 kW and a super-capacitor through a DC/DC hybrid converter. A fuel cell has been proposed as a primary source of ... -
Bioelectrochemical systems for energy storage: a scaled-up power-to-gas approach
(2019-01-01)
Article
Restricted access - publisher's policyThe development and implementation of energy storage solutions is essential for the sustainability of renewable energy penetration in the electrical system. In this regard, power-to-gas technologies are useful for seasonal, ... -
Experimental study of the corona performance of aged sand-cast substation connectors
(2020-06-01)
Article
Open AccessSubstation connectors, like many other high-voltage products, are tested once manufactured. However, the corona behavior of aged specimens can differ from that exhibited by newer ones, thus generating detrimental technical ... -
Stability analysis of systems with high VSC penetration: where is the limit?
(Institute of Electrical and Electronics Engineers (IEEE), 2019-12-16)
Article
Restricted access - publisher's policyThe paper addresses the stability of modern voltage-source-converter-dominated power systems, which are experiencing a progressive phase-out of conventional generation. An essential system model is used to capture the ... -
International tendencies on energy security: a review on national energy policies in the electrical sector
(2019-05-03)
Article
Open AccessEnergy security constitutes a priority within national energy policies. The international trend of energy transitions has fostered electrification of the energy systems, so it results imperative to study how the concept ... -
Run to failure: aging of commercial battery cells beyond their end of life
(2020-04-11)
Article
Open AccessThe aim of this work is to age commercial battery cells far beyond their expected lifetime. There is a gap in the literature regarding run to failure tests of lithium-ion batteries that this work intends to address. ... -
Voltage sag influence on controlled threephase grid-connected inverters according to the Spanish grid code
(2020-02-03)
Article
Open AccessTo ensure the safe operation of the grid, there are some requirements to be taken into consideration to connect power converters. During abnormal conditions – e.g. during voltage sags –, the control of the converters is a ... -
Robust decentralized approach to interaction mitigation in VSC-HVDC grids through impedance minimization
(2020-01-01)
Article
Restricted access - publisher's policyAn interconnection of independently designed voltage source converters (VSCs) and their control in high voltage DC grids can result in network-level detrimental interactions and even instability. In many cases, vendors are ... -
Energy-based control of a DC Modular Multilevel Converter for HVDC grids
(Institute of Electrical and Electronics Engineers (IEEE), 2019-11-22)
Article
Open AccessDC-DC converters are expected to interconnect High Voltage Direct Current (HVDC) grids with different configurations or voltage levels, which will increase reliability and operational flexibility. The DC Modular Multilevel ... -
Flexible converters for meshed HVDC grids: From Flexible AC Transmission Systems (FACTS) to Flexible DC grids
(Institute of Electrical and Electronics Engineers (IEEE), 2020-02-01)
Article
Open AccessFlexible Alternating Current Transmission Systems (FACTS) have achieved to enhance the flexibility of modern AC power systems, by providing fast, reliable and controllable solutions to steer the power flows and voltages ...
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