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Energy Balancing Improvement of Modular Multilevel Converters under Unbalanced Grid Conditions
(Institute of Electrical and Electronics Engineers, 2017-08)
This paper presents a feedback/feed-forward control strategy to improve the voltage balancing of modular multilevel converters (MMCs) under unbalanced grid conditions. The inclusion of a feed-forward compensation improves ...
Analysis of Dynamic Voltage Support Schemes for PV Generators Implemented in Latin America
(Institute of Electrical and Electronics Engineers, 2020-04)
The levels of renewable power, particularly PV, injected into different electrical systems in Latin America, bring with them a series of fundamental technical changes that need to be addressed. Among them, power quality ...
Active Current Mirrors for Low-Voltage Analog Circuit Design
(Birkhauser Boston Inc, 2017-12)
In this work, active current mirrors using sensing resistors and a pass transistor in a feedback loop will be examined in detail. First, several non-idealities in this family of circuits, such as offset, noise, output ...
Current density-voltage characteristics in thin film Cu/CuO/Cu sandwich structure
(Facultad Experimental de Ciencias de la Universidad del Zulia, 2011)
Adaptive Control Strategy for VSC-Based Systems under Unbalanced Network Conditions
(Institute of Electrical and Electronics Engineers, 2010-12)
A new adaptive control strategy, intended to improve the ride-through capability of HVDC systems under unbalanced network conditions and parameter uncertainties, is introduced. The proposed strategy resorts to a model ...
Current-voltage curves of eutectic In-Sb-Te thin films for phase change memory devices
(Emerald, 2019-10)
Purpose: The purpose of this paper is to investigate electrical properties of eutectic In8Sb8Te84 and In10Sb51Te39 as made thin films to evaluate their potential for non-volatile phase-change memories, once the thermal ...
The Impact of the Use of Large Non-Linear Lighting Loads in Low-Voltage Networks
(IntechOpen, 2019)
The principal numerical and experimental results obtained by the authors on the harmonicpower losses in low-voltage networks in the lighting area have been summarizedin this review. Light-emitting diodes (LEDs) and compact ...
Observer-Based Grid-Voltage Sensorless Synchronization and Control of a VSI-LCL Tied to an Unbalanced Grid
(Institute of Electrical and Electronics Engineers, 2019-07)
This paper proposes an observer-based grid-voltage sensorless strategy that allows to implement the synchronization and control of an LCL grid-tied voltage source inverter. By using exclusively the measurement of the current ...
Low Computational Burden Grid Voltage Sensorless Current Controller
(IET, 2013-09)
This study proposes a grid voltage sensorless reduced order generalised integrator-based current controller. The proposal takes advantage of the controller structure to avoid the grid voltage measurement, avoiding the need ...
Impact of nonlinear lighting loads on the neutral conductor current of low voltage residential grids
(MDPI AG, 2020-09)
In the last decade, mainly due to political incentives towards energy efficiency, the share of lamps with power electronic interfaces, like Compact Fluorescent Lamps (CFL) and Light Emitting Diode (LED) lamps, has significantly ...