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Novel high-power-factor ZCS-PWM preregulators
(Institute of Electrical and Electronics Engineers (IEEE), 2001-04-01)
This paper introduces novel zero-current-switching (ZCS) pulsewidth-modulated (PWM) preregulators based on a new soft-commutation cell, suitable for insulated gate bipolar transistor applications. The active switches in ...
Novel high-power-factor ZCS-PWM preregulators
(Institute of Electrical and Electronics Engineers (IEEE), 2001-04-01)
This paper introduces novel zero-current-switching (ZCS) pulsewidth-modulated (PWM) preregulators based on a new soft-commutation cell, suitable for insulated gate bipolar transistor applications. The active switches in ...
Improvements for ZCS-PWM commutation cell in high-power-factor preregulator application
(Inst Engineering Technology-iet, 2014)
Improvements for ZCS-PWM commutation cell in high-power-factor preregulator application
(Inst Engineering Technology-iet, 2006-03-01)
A Summary of different topological arrangements concerning a ZCS-PWM cell is presented, based on the analysis of its application in boost rectifying preregulators, controlled by the technique of instantaneous average values ...
Improvements for ZCS-PWM commutation cell in high-power-factor preregulator application
(Inst Engineering Technology-iet, 2006-03-01)
A Summary of different topological arrangements concerning a ZCS-PWM cell is presented, based on the analysis of its application in boost rectifying preregulators, controlled by the technique of instantaneous average values ...
Comutação automática estrela triângulo para motores de indução trifásicos
(Universidade Tecnológica Federal do ParanáCornelio ProcopioBrasilEngenharia de Controle e AutomaçãoUTFPR, 2018-06-12)
This work presents a proposal for the development and implementation of an automatic commutation system for delta-Wye connection in three-phase induction motors. The efficiency of alternating current machines can be improved ...
Health risk represented by inhaling polycyclic aromatic hydrocarbons (pah) during daily commuting involving using a high traffic flow route in bogota
(Revista de Salud Pública, 2013)
Objective Assessing the risk to health by inhaling particles and particle-bound PAH during daily commuting along a high traffic flow route/corridor in Bogota.MethodsA van was equipped with a PAS2000 photo-electric sensor ...
Novel high-power-factor isolated electronic ballast for multiple tubular fluorescent lamps
(2001-01-01)
This paper presents a novel isolated electronic ballast for multiple fluorescent lamps, featuring high power-factor, and high efficiency. Two stages compose this new electronic ballast, namely, a new voltage step-down ...
Novel high-power-factor isolated electronic ballast for multiple tubular fluorescent lamps
(2001-01-01)
This paper presents a novel isolated electronic ballast for multiple fluorescent lamps, featuring high power-factor, and high efficiency. Two stages compose this new electronic ballast, namely, a new voltage step-down ...