INVERTER FOR HIGH VOLTAGE DISCHARGE LAMP

PURPOSE: An inverter for a high voltage discharge lamp is provided to automatically vary the frequency of the inverter for generating power by sensing the brightness of the high voltage discharge lamp. CONSTITUTION: A PID(Proportional Integral Derivative) comparison controller(214) calculates a cont...

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Bibliographic Details
Main Authors HA, YOUNG CHEOL, HWANG, SUNG BUM
Format Patent
LanguageEnglish
Korean
Published 31.12.2010
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:PURPOSE: An inverter for a high voltage discharge lamp is provided to automatically vary the frequency of the inverter for generating power by sensing the brightness of the high voltage discharge lamp. CONSTITUTION: A PID(Proportional Integral Derivative) comparison controller(214) calculates a control value by using voltage difference. An adder(212) adds the voltage difference to a rated DC voltage for a reference frequency. A VVVF(Variable Voltage Variable Frequency)(204) varies an oscillation frequency according to the variable voltage of the adder. A switching driver(206) switches a primary voltage of a boosted transformer by the variable frequency. A boosting transformer(208) generates high AC power and supplies the high AC power to the high voltage discharge lamp.
Bibliography:Application Number: KR20090055955