Title :
Application of packet control method for a high power high voltage flyback converter to reduce noise influence
Author :
Kaboli, S. ; Sadriyeh, S.M.R. ; Mohammadi, A. ; Zolghadri, M.R. ; Emadi, A.
Author_Institution :
Sharif Univ. of Technol., Tehran
Abstract :
In the regulated switching power supplies, the output voltage is usually sampled across a resistive voltage divider. In high voltage applications, the resistance of the voltage divider is very high in order to reduce its power loss. Therefore, these resistors are very good receivers of environment noise. This paper introduces a new control method for a high power, high voltage flyback converter insensitive to the noise caused by ringing due to the leakage reactance of a high voltage flyback converter. In this method, output voltage is sampled in an intentionally extended cycle to be sure that all the oscillations are damped. Therefore there is no need to additional damping circuits and snubbers network and the efficiency of converter is not reduced. This method is applicable to any flyback converter in discontinues conduction mode. Mathematical concept is introduced and simulation and experimental results are presented
Keywords :
circuit oscillations; electrical faults; mathematical analysis; snubbers; switching convertors; voltage dividers; high power high voltage flyback converter; leakage reactance; noise reduction; oscillation damping circuits; packet control method; resistive voltage divider; snubbers network; switching power supplies; Circuit noise; Magnetic cores; Noise reduction; Power supplies; Pulse width modulation; Resistors; Semiconductor device noise; Transformer cores; Voltage control; Working environment noise; Converter Control; Discontinues Conduction Mode; Flyback Converter; High Voltage;
Conference_Titel :
Power Electronics and Applications, 2005 European Conference on
Conference_Location :
Dresden
Print_ISBN :
90-75815-09-3
DOI :
10.1109/EPE.2005.219342
