A microprocessor-based adaptive power factor corrector for nonlinear loads

1990 ◽  
Vol 37 (1) ◽  
pp. 77-81 ◽  
Author(s):  
H.M. El-Bolok ◽  
M.E. Masoud ◽  
M.M. Mahmoud
Keyword(s):  
Power Factor ◽  
Nonlinear Loads ◽  
Power Factor Corrector ◽  
Adaptive Power

scholarly journals One Cycle Control of a PWM Rectifier a New Approach

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5523
Author(s):  
Rodrigo De A. Teixeira ◽  
Werbet L. A. Silva ◽  
Guilherme A. P. De C. A. Pessoa ◽  
Joao T. Carvalho Neto ◽  
Elmer R. L. Villarreal ◽  
...  
Keyword(s):  
Power Factor ◽  
Digital Signal Processor ◽  
Digital Signal ◽  
Pwm Rectifier ◽  
Phase Voltage ◽  
Unity Power Factor ◽  
New Approach ◽  
Phase Current ◽  
Common Mode Voltage ◽  
Power Factor Corrector

This paper analyzes a Digital Signal Processor (DSP) based One Cycle Control (OCC) strategy for a Power Factor Corrector (PFC) rectifier with Common-mode Voltage (CMV) immunity. It is proposed a strategy that utilizes an emulated-resistance-controller in closed-loop configuration to set the dc-link voltage to achieve unity power factor (UPF). It is shown that if the PFC can achieve UPF condition and if the phase voltage is only affected by CMV, then phase current is free from CMV, as well as a lead-lag compensator (LLC) to average phase current.

Study of the Influence of Control System Parameters on the Quality of the Input Current of a Three-Phase Power Factor Corrector

2021 ◽  
Vol 2 (2) ◽  
pp. 29-35
Author(s):  
Dmitry A. Sorokin ◽  
◽  
Sergey I. Volskiy ◽  
Jaroslav Dragoun ◽  
◽  
...  
Keyword(s):  
Control System ◽  
Power Factor ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Input Current ◽  
System Operation ◽  
Error Amplifier ◽  
Three Phase ◽  
Power Factor Corrector

The paper suggests a control system of a three-phase power factor corrector. The study of the control system operation is carried out and the expressions for calculating the permissible values of error amplifier factors are obtained. The influence of the error amplifier parameters on phase current quality is investigated. The dependence of total harmonic distortion input current on a combination of error amplifier parameters is obtained at a given value of power factor. The conditions under which the total harmonic distortion input current has the minimum value are found out. This article is of interest to power electronics engineers, who are aimed at developing a three-phase power factor corrector.

A Novel High Power Factor Soft-Switching Converter

2012 ◽  
Vol 433-440 ◽  
pp. 5549-5555
Author(s):  
Yun Tao Yue ◽  
Yan Lin
Keyword(s):  
Power Factor ◽  
High Power ◽  
Power Supply ◽  
High Efficiency ◽  
Soft Switching ◽  
Switching Converter ◽  
Turn On ◽  
High Power Factor ◽  
Power Factor Corrector ◽  
Zero Voltage

A novel scheme of low power communication power supply with high power factor and soft-switching is presented, a power factor corrector and dc/dc converter of passive lossless soft-switching is based on a ML4803 IC control. DC/DC converter introduces a novel two-transistor forward soft-switching technique, which realizes zero-voltage turn-on and turn-off, with no additional switches. a communication power supply module is developed in this paper. It has the characteristics of rapid dynamic response, high power factor, high efficiency and small bulk ect.

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