Eaton Intelligent Power Limited

Cooper Technologies Company

Signify Holding B.v.

Liang Fang

James Moan

James Christopher Andrews

William Lee Shiley

Kenneth Dale Walma

Brian Eugene Elwell

Michael Troy Winslett

Anthony Audenzio Mangiaracina

Brian J Soderholm

Satya Kishan Ungarala

A light fixture can include a lighting circuit comprising at least one light source and at least one discrete component. The light fixture can also include a power supply coupled to the lighting circuit, where the power supply provides a setting current to the at least one light source. The light fixture can further include a sensor that measures the setting current flowing to the at least one light source. The light fixture can also include a controller coupled to the power supply and the sensor, where the controller provides, in real time, a setting current correction signal to the power supply to adjust the setting current delivered to the at least one light source. The setting current correction signal can be calibrated to an actual value of the at least one discrete component of the lighting circuit.

Setting current error reduction for light-emitting diode driver circuits

A power distribution module (PDM) can include an input portion configured to receive high-voltage (HV) power from a power source. The PDM can also include a power transfer device electrically coupled to the input portion, where the power transfer device is configured to generate at least one low-voltage signal using the HV power. The PDM can further include an output section electrically coupled to the power transfer device and including a number of output channels. The PDM can also include at least one switch disposed between the output section and the power transfer device, where the at least one switch has an open position and a closed position. The PDM can further include a controller communicably coupled to the at least one switch, where the controller operates the at least one switch between the closed position and the open position based on a power demand measured at the output section.

Shared power for power distribution modules

A distributed low voltage power system is disclosed herein. The system can include a power source generating line voltage power, and a line voltage cable having a first end and a second end, where the line voltage end is coupled to the power source. The system can also include a power distribution module (PDM) having a power transfer device and an output channel. The system can further include a communication link coupled to the output channel of the PDM. The system can also include a point-of-load (POL) control device coupled to the output channel of the PDM using the communication link, where the POL control device generates a distributed LV signal using a LV signal received from the PDM. The system can further include at least one LV device coupled to the point-of-load control device, where the distributed LV signal provides power regulation to the at least one LV device.

Distributed low voltage power systems

A distributed low voltage power system is disclosed herein. The system can include a power source generating line voltage power, and a first line voltage cable having a first line voltage end and a second line voltage end, where the first line voltage end is coupled to the power source. The system can also include a first power distribution module (PDM) comprising a first power transfer device and a first output channel. The system can further include a first LV cable having a first LV end and a second LV end, where the first LV end is coupled to the first output channel of the first PDM. The system can also include at least one first LV device operating on the first LV signal, where the second LV end of the first LV cable is coupled to the at least one first LV device.

A power distribution module for a distributed low voltage power system can include at least one input channel configured to receive line voltage power from at least one power source. The power distribution module can also include at least one receiving feature electrically coupled to the at least one input channel, where the at least one receiving feature is configured to receive at least one replaceable circuit module. The power distribution module can further include at least one output channel electrically coupled to the at least one receiving feature, where the at least one output channel is configured to send a final low voltage (LV) signal to at least one LV device.

Configurable low voltage power distribution circuit modules

Dimming or illumination control of an LED-based lighting fixture can utilize a combination of pulse width modulation and constant current reduction. A light emitting diode driver can implement pulse width modulation to control light over a first light intensity range and constant current reduction over a second light intensity range. The first light intensity range can be less intense than the second light intensity range. Thus, the driver can practice constant current reduction for dimming at higher light intensities and pulse width modulation for dimming at lower light intensities.

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Peachtree City, GA, United States of America

Liang Fang