Luminaire with switch-mode converter power monitoring
First Claim
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1. A power monitoring system, comprising:
- a power subsystem including;
at least one switch-mode power converter including at least one power converter drive circuit, the switch-mode power converter electrically conductively coupled to provide an adjustable level power output to at least one solid state lighting subsystem and the power converter drive circuit to adjust the power output level of the switch-mode power supply to the at least one solid state lighting subsystem based on at least one of;
a converter drive signal frequency or a converter drive signal pulse width; and
a control subsystem communicably coupled to the power converter drive circuit, the control subsystem including;
at least one controller that determines at least an approximation of the power consumed by the power subsystem to generate the power output to the at least one solid state lighting subsystem based at least in part on at least one of;
information indicative of the converter drive signal frequency or information indicative of the converter drive signal pulse width.
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Abstract
The power consumption of a switch-mode power converter can be determined based upon at least one of a converter drive signal pulse width or a converter drive signal frequency. Such power consumption can be determined using an algorithm providing a functional relationship between switch-mode power converter power consumption and at least converter drive signal pulse width or frequency. Such algorithms can be either calculated using known component values or empirically determined. Such power consumption may also be determined using store power consumption data in a data store that is indexed by at least one of the converter drive signal pulse width or frequency.
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Citations
30 Claims
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1. A power monitoring system, comprising:
a power subsystem including; at least one switch-mode power converter including at least one power converter drive circuit, the switch-mode power converter electrically conductively coupled to provide an adjustable level power output to at least one solid state lighting subsystem and the power converter drive circuit to adjust the power output level of the switch-mode power supply to the at least one solid state lighting subsystem based on at least one of;
a converter drive signal frequency or a converter drive signal pulse width; anda control subsystem communicably coupled to the power converter drive circuit, the control subsystem including;
at least one controller that determines at least an approximation of the power consumed by the power subsystem to generate the power output to the at least one solid state lighting subsystem based at least in part on at least one of;
information indicative of the converter drive signal frequency or information indicative of the converter drive signal pulse width.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method to determine the power consumed by a power subsystem including a switch-mode power converter and a power converter drive circuit, the switch-mode power converter electrically conductively coupled to a solid-state lighting subsystem to provide an adjustable level power output to the solid state lighting subsystem based on at least one of:
- a pulse width modulated signal frequency or a pulse width modulated signal pulse width, the method comprising;
determining by at least one controller communicably coupled to at least the power converter drive circuit at least an approximation of the power consumed by the power subsystem to generate the power output to the at least one solid state lighting subsystem based on information indicative of at least one of;
the converter drive signal frequency or the converter drive signal pulse width. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
- a pulse width modulated signal frequency or a pulse width modulated signal pulse width, the method comprising;
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24. A solid state lighting power monitoring system, comprising:
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a solid state lighting subsystem including at least one solid state light source; a power subsystem including; a switch-mode power converter electrically conductively coupled to provide a power output to the solid state lighting subsystem; and a pulse width modulated power converter drive circuit to adjust the power output of the switch-mode power supply to the solid state lighting subsystem, the power converter drive circuit includes at least one output to communicate information indicative of at least one of;
a converter drive signal frequency or a converter drive signal pulse width; anda control subsystem communicably coupled to the power converter drive circuit output, at least one nontransitory storage medium, and a communications interface, the control subsystem including at least one controller that; receives from the power converter drive circuit output information indicative of at least one of the converter drive signal frequency or the converter drive signal pulse width; and determines an approximation of the power consumed to generate the power output to the at least one solid state lighting subsystem based at least in part on the received information indicative of at least one of;
the converter drive signal frequency or the converter drive signal pulse width. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification