Hybrid power architecture for controlling a lighting system

• US 9,468,046 B2
• Filed: 07/20/2013
• Issued: 10/11/2016
• Est. Priority Date: 07/20/2013
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Lunera Lighting, Incorporated
• Inventors: Barnetson, Donald, Zhang, John X
• Primary Examiner(s): KAPLAN, HAL IRA
• Application Number:
  US13/947,057
• Publication Number:
  US 20150021988A1
• Time in Patent Office: 1,179 Days
• Field of Search: 307/23
• US Class Current: 1/1
• CPC Class Codes: H02J 9/061 for DC powered loads
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/31 Phase-control circuits

Abstract

A hybrid power architecture for lighting system that physically separates the conversion of AC-DC constant voltage power from the conversion of DC-DC constant current needed to drive the LEDs. The hybrid power architecture comprises a power converter to generate DC volt power, a battery backup unit for providing backup in the event of power failure and control architecture for controlling the intensity of the lighting system.

Claims

1. A hybrid power architecture for controlling a lighting network in an area comprising:

a plurality of LED luminaires;

a controller mounted on the plurality of LED luminaires for varying the current input to the LED luminaires;

a power supply unit having a power converter for generating a DC voltage power, a battery connected to the power supply unit, a battery charging circuit, and a boost circuit to boost battery output and to generate a backup signal in the event of power outage; and

a multi-conductor cable to transfer the DC voltage power, the backup signal and a sensor signal to the controller on the plurality of LED luminaires.

2. The hybrid power architecture of claim 1 wherein the controller varies the current in range of 1% to 100%.

3. The hybrid power architecture of claim 1 wherein the DC voltage power generated by the power converter is less than 60 Volts DC.

4. The hybrid power architecture of claim 1 wherein the power converter is fed with 120V-277V AC power.

5. The hybrid power architecture of claim 1 wherein the battery can be connected externally or internally.

6. The hybrid power architecture of claim 1 wherein the boost circuit boosts the battery output to 12V-48V DC in the event of power outage.

7. The hybrid power architecture of claim 1 wherein the backup signal generated by the boost circuit is 10V DC signal.

8. The hybrid power architecture of claim 1 wherein the multi-conductor cable is Cat5 or cat6 cable.

9. The hybrid power architecture of claim 1 wherein the controller varies the current to 10 percent on receiving the backup signal.

10. The hybrid power architecture of claim 1 wherein the sensor signal reflects the intensity of light required.

11. A power supply unit for sending power and a dimming control signal to a lighting system comprising:

an input port to receive AC main supply, and a line for connecting a battery;

a power converter to convert power from the AC main supply into a DC voltage power, wherein the DC voltage power is used to illuminate the lighting system;

a relay switch connected to the AC main supply such that the relay switch activates a battery power in the event of AC main supply failure;

a battery backup unit to generate a control signal when a system is on the battery power;

a charger to charge the battery;

a boost circuit to boost battery output to the DC voltage power; and

a multi-port outlet for outputting the DC voltage power, and the control signal, wherein each port of the multi-port outlet is adaptable to receive class 2 multi-conductor cable.

12. The power supply unit of claim 11 wherein the power supplying unit further comprises means for reducing electromagnetic interference.

13. The power supply unit of claim 11 wherein the power supplying unit further comprises means for automatic power factor control.

14. The power supply unit of claim 11 wherein the control signal determines the intensity of light required in the area.

15. The power supply unit of claim 11 wherein the DC voltage power is in range of 12V to 48V DC.

16. The power supply unit of claim 11 wherein the control signal is 10 Volt DC signal.

17. The power supply unit of claim 11 wherein each port of the multi-port outlet is adaptable to receive RJ45 connector.

18. The power supply unit of claim 11 wherein the multi-port outlet outputs the DC voltage power and a sensor signal.

19. The power supply unit of claim 11 wherein each port on multi-port outlet has two indicators for fault detection and positive connection detection.