IP Library Granted Patent US 12,010,768
Granted Patent B2
US 12,010,768 · App. 17/506,540 · Granted Jun 11, 2024

Hybrid power supply systems, methods, and devices for excimer lamps

Inventors: Yongduk Lee (Vernon, CT); Matthew Robert Pearson (Hartford, CT)
Assignee: GOODRICH CORPORATION
H05B41/2806A61L2/10A61L9/20H01J61/56H05B41/042A61L2202/11
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Quick Facts
Patent No.
US 12,010,768
App. No.
17/506,540
Granted
Jun 11, 2024
Kind
B2
Abstract

A sanitization apparatus includes an excimer lamp, a power converter configured to power the excimer lamp and a controller. The controller is configured to monitor an impedance of the excimer lamp and vary an output voltage waveform of the power converter based upon the impedance.

Claims (46)

1. A sanitization apparatus comprising:

an excimer lamp;

a power converter configured to power the excimer lamp; and

a controller configured to monitor an impedance of the excimer lamp and vary an output voltage waveform of the power converter based upon the impedance.

2. The sanitization apparatus of claim 1 , wherein the excimer lamp is configured to emit Far-UVC light.

3. The sanitization apparatus of claim 2 , wherein the controller is configured to vary the output voltage waveform of the power converter between a sine waveform and a nanosecond pulse voltage.

4. The sanitization apparatus of claim 2 , wherein the controller is configured to vary the output voltage waveform of the power converter between a first sine waveform comprising a first frequency and a second sine waveform comprising a second frequency, wherein the first frequency is greater than the second frequency.

5. The sanitization apparatus of claim 2 , further comprising a DC power source configured to supply an input power signal to the power converter.

6. The sanitization apparatus of claim 1 , wherein the controller is configured to receive a temperature of the excimer lamp, an output current of the power converter, and an output voltage of the power converter.

7. The sanitization apparatus of claim 6 , wherein the controller is configured to calculate a phase difference between the output current and the output voltage.

8. The sanitization apparatus of claim 7 , wherein the controller is configured to calculate the impedance based upon the phase difference.

9. The sanitization apparatus of claim 8 , wherein the controller is configured to calculate the impedance based upon the temperature of the excimer lamp.

10. A sanitization apparatus comprising:

an excimer lamp;

a power converter configured to power the excimer lamp; and

a control unit having a processor; and

a tangible, non-transitory memory configured to communicate with the processor, the tangible, non-transitory memory having instructions stored thereon that, in response to execution by the processor, cause the control unit to perform operations comprising:

generating a first voltage waveform with the power converter;

powering the excimer lamp with the first voltage waveform;

monitoring an impedance of the excimer lamp;

detecting that the impedance of the excimer lamp is outside of a threshold envelope;

generating a second voltage waveform with the power converter; and

powering the excimer lamp with the second voltage waveform.

11. The sanitization apparatus of claim 10 , wherein the excimer lamp is configured to emit Far-UVC light.

12. The sanitization apparatus of claim 10 , wherein the first voltage waveform comprises a sine waveform and the second voltage waveform comprises a nanosecond pulse voltage.

13. The sanitization apparatus of claim 10 , wherein the first voltage waveform comprises a first frequency and the second voltage waveform comprises a second frequency, wherein the first frequency is greater than the second frequency.

14. The sanitization apparatus of claim 10 , further comprising a DC power source configured to supply an input power signal to the power converter.

15. The sanitization apparatus of claim 10 , wherein the control unit further performs operations comprising:

receiving a temperature signal of the excimer lamp;

receiving an output current signal of the power converter; and

receiving an output voltage signal of the power converter;

wherein the impedance is monitored using at least one of the temperature signal, the output current signal, and the output voltage signal.

16. A method for powering an excimer lamp, comprising:

generating a first voltage waveform with a power converter;

powering the excimer lamp with the first voltage waveform;

monitoring an impedance of the excimer lamp;

detecting that the impedance of the excimer lamp is outside of a threshold envelope;

generating a second voltage waveform with the power converter; and

powering the excimer lamp with the second voltage waveform.

17. The method of claim 16 , further comprising:

receiving a temperature signal of the excimer lamp;

receiving an output current signal of the power converter; and

receiving an output voltage signal of the power converter.

18. The method of claim 17 , wherein the impedance is monitored using at least one of the temperature signal, the output current signal, and the output voltage signal.

19. The method of claim 18 , further comprising measuring a phase difference between the output current signal and the output voltage signal.

20. The method of claim 19 , wherein the impedance is monitored based upon at least one of the temperature signal of the excimer lamp and the phase difference of the excimer lamp.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 20, 2021
From: LEE, YONGDUK; PEARSON, MATTHEW ROBERT
To: GOODRICH CORPORATION
Reel/Frame 057855/0227 →
Continuity (1)
Related Publication 20230119015A1 · Apr 20, 2023