Search
Now showing items 1-10 of 57
Variable speed refrigeration system with HPF input rectifier stage
(2008-09-22)
This paper is based on the analysis and implementation of a new drive system applied to refrigeration systems, complying with the restrictions imposed by the IEC standards (Harmonic/Flicker/EMI-Electromagnetic Interference ...
A new design methodology for multipulse rectifiers with Delta auto-connected transformers and a retrofit application in Adjustable Speed Drives (ASDs)
(2012-12-01)
Multipulse rectifiers can replace a conventional six pulse three-phase rectifier (diode bridge) providing a DC voltage with low ripple, low Total Harmonic Distortion of current (THDi) and a high Power Factor (PF). In this ...
A multi-cell variable frequency interleaved ZCS boost rectifier digitally controlled by FPGA
(IEEE, 2006-01-01)
This paper presents a multi-cell single-phase high power factor boost rectifier in interleave connection, operating in critical conduction mode, employing a soft-switching technique, and controlled by Field Programmable ...
A 2kW interleaved ZCS-FM boost rectifier digitally controlled by FPGA device
(IEEE, 2005-01-01)
This paper presents a 2kW single-phase high power factor boost rectifier with four cells in interleave connection, operating in critical conduction mode, and employing a soft-switching technique, controlled by Field ...
A novel HPF voltage source rectifier for variable speed refrigeration systems
(IEEE, 2006-01-01)
A novel single-phase voltage source rectifier capable to achieve High-Power-Factor (HPF) for variable speed refrigeration system application, is proposed in this paper. The proposed system is composed by a single-phase ...
Análise da influência da freqüência de comutação e da ondulação da corrente de entrada no projeto de conversores PFC para minimização do volume de magnéticos
(Universidade Federal de Santa MariaBREngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia Elétrica, 2006-03-31)
This work investigates the relationship among the magnetic volume, switching
frequency and input current ripple of a single-phase, 1kW boost based PFC converter
with universal input voltage range, complying with the ...
Pré-regulador retificador entrelaçado (Interleaved) ZCS-FM boost, com controle digital através de dispositivo FPGA e linguagem VHDL
(Universidade Estadual Paulista (UNESP), 2005-10-27)
Este trabalho apresenta a análise, projeto e implementação de um pré-regulador retificador boost formado por células de potência entrelaçadas (interleaving), empregando técnicas de comutação não dissipativa, operando no ...