Method and operating device for minimizing the insulation stress of a high-pressure discharge lamp system
AssigneeOSRAM GmbH
InventorsAlois Braun, Joachim Mühlschlegel
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Abstract
A method for minimizing the insulation stress of a high-pressure discharge lamp system, with an operating device, which generates a high voltage for starting the high-pressure discharge lamp, wherein a starting voltage time sum applied during lamp starting is minimized, the starting voltage time sum is the sum of all time segments Zi during which the magnitude of the starting voltage exceeds a starting voltage limit, and the starting voltage limit is defined as the factor range of a maximum value, in terms of magnitude, of the applied high voltages.
Claims17
A method for minimizing the insulation stress of a high-pressure discharge lamp system, the method comprising:
- generating a high voltage to produce a starting voltage for starting the high-pressure discharge lamp system;
- applying a starting voltage time sum during lamp starting,
- wherein the starting voltage time sum is the sum of all time segments (Zi) during which a magnitude of the starting voltage exceeds a starting voltage limit,
- wherein the starting voltage limit is defined as a factor range of a maximum value, in terms of magnitude, of the high voltage, and
- wherein the ratio
- ∑
- i
- =
- 0
- n
-
-
- 1
-
-
- Z
- i
- ∑
- i
- =
- n
-
-
- 1
- +
- 1
- n
-
-
- 2
-
-
- Z
- i
- of the starting voltage time sum of a first time span (ta|n=0 . . . n1) to the starting voltage time sum of a second time span (tb|n=n1+1 . . . n2) is greater than ¼.
A method for minimizing the insulation stress of a high-pressure discharge lamp system, the method comprising:
- generating a high voltage to produce a starting voltage for starting the high-pressure discharge lamp system;
- applying a starting voltage time sum during lamp starting,
- wherein the starting voltage time sum is the sum of all time segments Zi during which a magnitude of the starting voltage exceeds a starting voltage limit,
- wherein the starting voltage limit is defined as a factor range of a maximum value, in terms of magnitude, of the high voltage, and
- wherein the ratio
- ∑
- i
- =
- 0
- n
-
-
- 1
-
-
- Z
- i
- ∑
- i
- =
- n
-
-
- 1
- +
- 1
- n
-
-
- 2
-
-
- Z
- i
- of the starting voltage time sum of a first time span (ta|n=0 . . . n1) to the starting voltage time sum of a second time span (tb|n=n1+1 . . . n2) is greater than ¼, and wherein the duration of the second time span (tb) is between 15 min and 25 min.
Dependencies are inferred from the claim text.