Browsing by Author "Lumbreras Carrasco, David"
Now showing items 1-13 of 13
-
A novel three-dimensional sigma–delta modulation for high-switching-frequency three-phase four-wire active power filters
(2024-02-01)
Article
Open AccessThis article presents a new modulation technique called three-dimensional sigma–delta (3D-S¿ ) modulation for high-frequency three-leg four-wire voltage source converters (VSCs) that use wide-bandgap (WBG) semiconductors. ... -
Comprehensive analysis of hexagonal sigma-delta modulations for three-phase high-frequency VSC based on wide-bandgap semiconductors
(Institute of Electrical and Electronics Engineers (IEEE), 2021-06)
Article
Open AccessThe efficiency of wide-bandgap (WBG) power converters can be greatly improved using high-frequency modulation techniques. This article proposes using single-loop and double-loop hexagonal sigma-delta (H-S¿ and DH-S¿, ... -
Development of an active power filter based on wide-bandgap semiconductors
(Universitat Politècnica de Catalunya, 2022-07-19)
Doctoral thesis
Open AccessElectrical and electronic equipment needs sinusoidal currents and voltages to function properly. Equipment such as computers, household appliances, electric vehicle chargers, and LED lights can distort the grid and worsen ... -
Effect of the heat dissipation system on hard-switching GaN-based power converters for energy conversion
(2021-10-02)
Article
Open AccessThe design of a cooling system is critical in power converters based on wide-bandgap (WBG) semiconductors. The use of gallium nitride enhancement-mode high-electron-mobility transistors (GaN e-HEMTs) is particularly ... -
Efficiency analysis of wide band-gap semiconductors for two-level and three-level power converters
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference lecture
Open AccessPower devices based on wide band-gap materials are emerging as alternatives to silicon-based devices. These new devices allow designing and building converters with fewer power losses, and are thus more highly efficient ... -
Efficiency comparison of power converters based on SiC and GaN semiconductors at high switching frequencies
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Conference report
Open AccessHard-switching voltage source converters (VSC) based on wide-bandgap (WBG) devices surpass their silicon equivalents in every aspect. Nevertheless, at high switching frequencies, the efficiency significantly differs depending ... -
Evaluating modulation techniques in a hybrid T-type power converter based on GaN and SiC semiconductors for electric transport
(Institute of Electrical and Electronics Engineers (IEEE), 2024)
Conference report
Open AccessGallium nitride (GaN) and silicon carbide (SiC) semiconductors can improve the power converters used in electric vehicles. These devices offer significant advantages due to their ability to operate at high switching ... -
Fast-processing sigma-delta strategies for three-phase wide-bandgap power converters with common-mode voltage reduction
(Institute of Electrical and Electronics Engineers (IEEE), 2022-02-01)
Article
Open AccessThe electromagnetic compatibility of wide-bandgap (WBG) power converters can be greatly improved using spread-spectrum modulation techniques. This article proposes a family of reduced common-voltage sigma–delta modulations ... -
High-frequency spread-spectrum modulations for wide-bandgap voltage source converters
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Conference lecture
Restricted access - publisher's policyThe high efficiency and the electromagnetic com- patibility of wide-bandgap (WBG) power converters can be further improved using spread-spectrum (SS) modulations. This paper evaluates and compares the impact of SS techniques ... -
Implementing control systems to mitigate current harmonic resonances: a proportional-resonant control approach
(Institute of Electrical and Electronics Engineers (IEEE), 2024)
Conference report
Restricted access - publisher's policyShunt-connected active power filters (APF) are a well-established solution for mitigating current harmonics in electrical grids. Nevertheless, the combined impedance of the grid and connected equipment can introduce ... -
Modelització, control i simulació de xarxes VSC-HVDC per a la integració de parcs eòlics marins.
(Universitat Politècnica de Catalunya, 2017-01-12)
Bachelor thesis
Open AccessEl present treball presenta l’anàlisi, la modelització, el control i la simulació de xarxes mallades High Voltage Direct Current (HVDC) utilitzades per transmetre a la xarxa elèctrica l’energia generada a parcs eòlics ... -
Study of the design and control of a three-phase multilevel active filter
(Universitat Politècnica de Catalunya, 2019-10-24)
Master thesis
Restricted access - author's decisionThis thesis addresses the issues of filtering the harmonics in electrical grids using active power filters. Power converters are the main element of an active power filter. The performance of the filter greatly depends on ... -
Trends in power quality, harmonic mitigation and standards for light and heavy industries: a review
(2020-11-05)
Article
Open AccessThe power quality of electrical grids is becoming an important issue worldwide. The electrical grid has to deliver sinusoidal voltages and currents without frequency or amplitude variations. However, the connection of ...
