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Thermal modeling of large electrolytic capacitors using FEM and considering the internal geometry
(Institute of Electrical and Electronics Engineers (IEEE), 2021-06-16)
Article
Open AccessThis article focuses on developing a finite-element method (FEM) model for large capacitors’ thermal modeling and reliability analysis. Thermal modeling for capacitors is critical since the capacitor’s lifetime depends on ... -
Effect of current distortion and unbalanced loads on semiconductors reliability
(Institute of Electrical and Electronics Engineers (IEEE), 2021-01-01)
Article
Open AccessThis article presents a reliability analysis of a 4-wire grid-tied inverter under different loading conditions, considering unbalanced loads and harmonic distortion in the current consumed. The proposed power converter is ... -
Real-time optimization-based reference calculation integrated control for MMCs considering converter limitations
(Institute of Electrical and Electronics Engineers (IEEE), 2021-10-12)
Article
Open AccessThe paper addresses a real-time optimization-based reference calculation integrated with a control structure for Modular Multilevel Converters (MMC) operating under normal and constrained situations (where it has reached ... -
Optimal H-infinity control design for MMC-based HVDC links
(Institute of Electrical and Electronics Engineers (IEEE), 2021-04-06)
Article
Open AccessThe modular multilevel converter (MMC) has emerged as the preferred choice for voltage source converter (VSC)-based high voltage direct current (HVDC) systems due to its low losses, low harmonic distortion, modularity, and ... -
Improved current reference calculation for MMCs internal energy balancing control
(Institute of Electrical and Electronics Engineers (IEEE), 2021-06-22)
Article
Open AccessThe paper addresses an improved inner current reference calculation to be employed in the control of modular multilevel converters operating during either balanced or unbalanced conditions. The suggested reference calculation ... -
Methodology for interaction identification in modular multi-level converter-based HVDC systems
(2021-07-24)
Article
Restricted access - publisher's policyThis paper suggests a methodology for the identification, classification, and evaluation of various types of interactions that may occur in an HVDC link based on modular multi-level converters (MMC). The methodology ... -
New methodology to calculate DC voltage signature in n-phases TRUs under supply voltage sags
(Institute of Electrical and Electronics Engineers (IEEE), 2022-02-28)
Article
Open AccessA new methodology based on the shadow projection has been developed to study any multipulse rectifier's dynamic behavior under balanced and unbalanced conditions. The proposed methodology calculates the DC average voltage ... -
Integration of Distributed Energy Resources to Unbalanced Grids under Voltage Sags with Grid Code Compliance
(2022-01-01)
Article
Restricted access - publisher's policyThe aim of this paper is to analyze the situations in which distributed power generation systems (DPGSs) based on renewable energy sources (RESs) can be controlled when operating under voltage sags. Analytical models for ... -
An Improved hybrid DC circuit breaker with self-adaptive fault current limiting capability
(Institute of Electrical and Electronics Engineers (IEEE), 2022-04-01)
Article
Open AccessThe effective fault current limiting is very significant for the dc distribution system. However, the traditional dc fault current limiting method, i.e., directly installing dc reactor, may trigger negative impacts the ... -
Steady-state impedance mapping in grids with power electronics: What is grid strength in modern power systems?
(2022-03-01)
Article
Open AccessThe paper analyzes grid strength and grid impedance for systems with significant penetration of power electronics. The work shows that the traditionally employed Thévenin equivalent cannot capture the different saturation ... -
On-line remaining useful life estimation of power connectors focused on predictive maintenance
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-05-27)
Article
Open AccessConnections are critical elements in power systems, exhibiting higher failure probability. Power connectors are considered secondary simple devices in power systems despite their key role, since a failure in one such element ... -
Average value of the DC-link output voltage in multi-phase uncontrolled bridge rectifiers under supply voltage balance and unbalance conditions
(2021-12-01)
Article
Restricted access - publisher's policyAverage value of the DC-link output voltage is a variable of interest in multi-phase uncontrolled bridge rectifiers. The aim of this paper is to present a new, effort-saving procedure capable of providing an accurate value ...
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