<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The problems, devoted to power quality and particularly power factor correction, are of great importance nowadays. The key requirements, which should be satisfied according to the energy efficiency paradigm, are not limited only by high quality of the output voltage (low total harmonic distortion), but also assume minimal power losses (high efficiency) in the power factor corrector (PFC). It could be satisfied by the use of quasi-resonant pulse converter (QRPC) due to its high efficiency at high switching frequency instead of the classical pulse-width modulated (PWM) boost converter. A dynamic model of QRPC with zero current switching (ZCS) is proposed. This model takes into account the main features of QRPC-ZCS as a link of a PFC closed-loop system (discreteness, sharp changes of parameters over switching period, input voltage impact on the gain). The synthesized model is also valid for conventional parallel pulse converter over an active interval of commutation. The regulator for current loop of PFC was synthesized based on digital filter using proposed model by the criterion of fast acting.</p></abstract>

The problems, devoted to power quality and particularly power factor correction, are of great importance nowadays. The key requirements, which should be satisfied according to the energy efficiency paradigm, are not limited only by high quality of the output voltage (low total harmonic distortion), but also assume minimal power losses (high efficiency) in the power factor corrector (PFC). It could be satisfied by the use of quasi-resonant pulse converter (QRPC) due to its high efficiency at high switching frequency instead of the classical pulse-width modulated (PWM) boost converter. A dynamic model of QRPC with zero current switching (ZCS) is proposed. This model takes into account the main features of QRPC-ZCS as a link of a PFC closed-loop system (discreteness, sharp changes of parameters over switching period, input voltage impact on the gain). The synthesized model is also valid for conventional parallel pulse converter over an active interval of commutation. The regulator for current loop of PFC was synthesized based on digital filter using proposed model by the criterion of fast acting.

Power Factor Corrector Based on Parallel Quasi- Resonant Pulse Converter with Fast Current Loop

Professor, Chernihiv State Technological University, Ukraine

PhD Student, Chernihiv State Technological University, Ukraine

Electrical, Control and Communication Engineering

The problems, devoted to power quality and particularly power factor correction, are of great importance nowadays. The key requirements, which should be...

Power Factor Corrector Based on Parallel Quasi- Resonant Pulse Converter with Fast Current Loop

Published Online: Sep 05, 2013

Page range: 5 - 11

DOI: https://doi.org/10.2478/ecce-2013-0008

Keywords
Control system synthesis, closed loop systems, digital filters, power conversion, zero current switching

This content is open access.

Power Factor Corrector Based on Parallel Quasi- Resonant Pulse Converter with Fast Current Loop

Published Online: Sep 05, 2013

Page range: 5 - 11

DOI: https://doi.org/10.2478/ecce-2013-0008

KeywordsControl system synthesis, closed loop systems, digital filters, power conversion, zero current switching

This content is open access.

Keywords
Control system synthesis, closed loop systems, digital filters, power conversion, zero current switching