Search
Now showing items 1-10 of 11
Uma aplicacao da celula de comutacao ZVS-PWM-GEPAE ao conversor DC-AC
(1996-05-01)
This work presents the design and procedure of a DC-to-AC converter using a ZVS Commutation Cell developed by Barbi and Martins (1991) and applied to the family of DC-to-DC PWM converters. Firstly, we show the cell applied ...
The ZVS-PWM commutation cell applied to the DC-AC converter
(1997-12-01)
This paper presents the analysis of a dc-ac converter using a zero-voltage-switching (ZVS) commutation cell. First, we show the cell applied to the buck converter. The stages of operation are presented along with the main ...
A new family of zero-current-switching PWM converters and a novel HPF-ZCS-PWM boost rectifier
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Novel zero-current-switching PWM converters
(Institute of Electrical and Electronics Engineers (IEEE), 1997-06-01)
This paper presents a new family of pulsewidth-modulated (PWM) converters, featuring soft commutation of the semiconductors at zero current (ZC) in the transistors and zero voltage (ZV) in the rectifiers, Besides operating ...
A novel single-phase ZCS-PWM high-power-factor boost rectifier
(Institute of Electrical and Electronics Engineers (IEEE), 1999-07-01)
This paper presents a novel single-phase high-power-factor (HPF) pulsewidth-modulated (PWM) boost rectifier featuring soft commutation of the active switches at zero current (ZC), It incorporates the most desirable properties ...
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, 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 ...
Power performance evaluation of an electric home fan with triac-based automatic speed control system
(Imeko, 2009-01-01)
In order to provide a low cost system of thermal comfort, a common model of home fan, 40 cm diameter size, had its manual four-button control system replaced by an automatic speed control. The new control system has a ...
Minimization of lead and copper interferences on spectrophotometric determination of cadmium using electrolytic deposition and ion-exchange in multi-commutation flow system
(2000-12-04)
A new strategy for minimization of Cu2+ and Pb2+ interferences on the spectrophotometric determination of Cd2+ by the Malachite green (MG)-iodide reaction using electrolytic deposition of interfering species and solid phase ...
The Schrodinger and Pauli-Dirac Oscillators in Noncommutative Phase Space
(Springer/plenum Publishers, 2011-02-01)
We investigate the non-relativistic Schrodinger and Pauli-Dirac oscillators in noncommutative phase space using the five-dimensional Galilean covariant framework. The Schrodinger oscillator presented the correct energy ...