Patent · US Active

Method for controlling gas discharge lamps

US8525429B2 · kind B2 · utility

2Cited by

4References

6Claims

0Family size

Assignee

Minebea Co., Ltd. · JP

Inventors

Manfred Schlenk · Augsburg, DE
Robert Weger · Wels, AT
Hans Hoffmann · Mainz, DE
Mykhaylo Raykhman · Munich, DE
Michael Herfurth · Gilching, DE
Martin Feldtkeller · Munich, DE

Key dates

Filing date	Jun 22, 2010
Grant date	Sep 3, 2013
Priority date	—
Expiry date	May 5, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH05B41/2828
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and a device for controlling gas discharge lamps using a direct current/alternating current inverter (DC/AC inverter) that is operated at a predetermined frequency and that generates an AC output voltage U for operating the gas discharge lamps from a DC input voltage which has a residual ripple.The DC/AC inverter is operated in zero voltage switching (ZVS) mode, wherein the DC input voltage is used as the control variable for the lamp current IL, wherein fluctuations in the lamp current IL caused by the residual ripple of the DC input voltage are compensated by a variation in the switch-on times and/or switch-off times of the switching elements QH, QL of the DC/AC inverter.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.