Power converter failure detection and prevention

Patent metadata

Field	Value
Publication number	US-11599176-B2
Application number	US-201916728885-A
Country	US
Kind code	B2
Filing date	Dec 27, 2019
Priority date	Dec 31, 2018
Publication date	Mar 7, 2023
Grant date	Mar 7, 2023

Abstract

A power device includes one or more electrical components, the electrical components including one or more physical attribute. The power device includes one or more sensors configured to monitor the attribute(s). The power device includes a non-transitory computer-readable storage medium including one or more alerting rule. The power device includes one or more processors configured for retrieving the one or more alerting rule from the storage medium. The processors are configured for monitoring one or more sensor value from the sensor(s), wherein the sensor values are associated with the attribute(s). The processors are configured for evaluating the at least one alerting rule during the monitoring, and when the one or more alerting rule results in a pending failure condition, sending a notification to a user.

First claim

What is claimed is:

1. A power device comprising:
a housing comprising a cover;
a printed circuit board (PCB), wherein the PCB is located inside the housing;
at least one electrical component comprising at least one attribute, wherein the at least one electrical component is located on the PCB inside the housing;
at least one sensor configured to monitor the at least one attribute, wherein the at least one sensor is located on the PCB inside the housing, wherein the at least one attribute is generated inside the housing;
a non-transitory computer-readable storage medium comprising at least one alerting rule;
at least one processor configured for:
retrieving the at least one alerting rule from the storage medium,
monitoring at least one sensor value from the at least one sensor, wherein the at least one sensor value is associated with the at least one attribute,
evaluating the at least one alerting rule during the monitoring, and
when the at least one alerting rule results in a pending failure condition, sending a notification to a user;

wherein the cover comprises at least one of a waveguide and a reflector, and wherein the waveguide or the reflector are configured to direct the at least one attribute from the at least one electrical component to the at least one sensor.

2. The power device of claim 1 , further comprising storing at least one previous sensor value on the storage medium, and the at least one previous sensor value is used for evaluating the at least one alerting rule.

3. The power device of claim 1 , wherein the at least one sensor is configured to separately monitor a plurality of attributes of the at least one electrical component, and the evaluating comprises analyzing sensor values associated with the plurality of attributes.

4. The power device of claim 1 , comprising a plurality of electrical components comprising a respective plurality of attributes, and the evaluating comprises analyzing sensor values associated with the plurality of attributes.

5. The power device of claim 1 , comprising a plurality of sensors, each sensor measuring at least one of a plurality of attributes, and wherein the evaluating comprises analyzing a plurality of sensor values associated with the plurality of attributes.

6. The power device of claim 1 , comprising a plurality of electrical components, and wherein the at least one sensor is configured to monitor a plurality of attributes of the plurality of electrical components, and wherein the evaluating comprises analyzing a plurality of sensor values associated with the plurality of attributes.

7. The power device of claim 1 , wherein the at least one attribute is at least one of an electrical property and a physical property.

8. The power device of claim 1 , wherein when the at least one alerting rule evaluation indicates the pending failure condition, the at least one processor modifies at least one operational characteristic of the power device.

9. The power device of claim 1 , wherein the at least one sensor is located at least 1 centimeter (cm) from the at least one electrical component.

10. The power device of claim 1 , wherein the at least one sensor is located at least 2 cm from the at least one electrical component.

11. The power device of claim 1 , wherein the at least one sensor is located at least 5 cm from the at least one electrical component.

12. The power device of claim 1 , wherein the storage medium is located remotely to the power device.

13. The power device of claim 1 , wherein the at least one processor is located remotely to the power device.

14. The power device of claim 1 , wherein the cover comprises the at least one sensor.

15. The power device of claim 1 , wherein the at least one electrical component is line-of-sight obscured from the at least one sensor.

16. The power device of claim 1 , wherein the at least one sensor is at last one sensor selected from the group consisting of a temperature sensor, an acoustic sensor, a motion sensor, an acceleration sensor, an optical sensor, a thermal camera, a digital camera, a photodiode, an infrared photodiode, an electromagnetic radiation sensor, a magnetic sensor, a radiofrequency transceiver, a chemical sensor, a gas spectrometer, a chromatography sensor, an ionic sensor, and a humidity sensor.

17. A method comprising:
retrieving at least one alerting rule from a storage medium;
directing, using at least one of a waveguide or a reflector, at least one attribute of an electrical component of a power device to at least one sensor of the power device, wherein the power device comprises a PCB and a housing, wherein the housing comprises a cover, wherein the electrical component and the at least one sensor are located on the PCB inside the housing, wherein the at least one attribute is generated inside the housing, wherein the cover comprises the waveguide or the reflector, and wherein the waveguide or the reflector is configured to direct the at least one attribute of the electrical component to the at least one sensor;
monitoring at least one sensor value from the at least one sensor, wherein the at least one sensor value is associated with at least one attribute of the electrical component of the power device;
evaluating the at least one alerting rule during the monitoring; and
when the at least one alerting rule results in a pending failure condition, sending a notification to a user.

18. The method of claim 17 , wherein the electrical component is line-of-sight obscured from the at least one sensor.

19. The method of claim 17 , further comprising storing at least one previous sensor value on the storage medium, and the at least one previous sensor value is used for evaluating the at least one alerting rule.

20. The method of claim 17 , wherein the at least one sensor is configured to separately monitor a plurality of attributes of the at least one electrical component, and the evaluating comprises analyzing sensor values associated with the plurality of attributes.

Assignees

• Solaredge Technologies Ltd

Inventors

• Har-Shai Liron
• Gershman Israel
• Morozov Igor
• Lachmann David
• Zlotnikov Vitaly
• Gomberg Bryon
• Galin Yoav

Classifications

• G01R31/00 Primary

  Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere ({measuring superconductive properties G01R33/1238;} testing line transmission systems H04B3/46; testing or measuring semiconductors or solid state devices during manufacture {H10P74/00}) · CPC title

• H02H3/24

  responsive to undervoltage or no-voltage {(H02H3/207 takes precedence)} · CPC title

• G08B21/185 Primary

  Electrical failure alarms · CPC title

• G08B21/18

  Status alarms (G08B21/02 takes precedence) · CPC title

• H02H11/008

  preventing unsafe switching operations in substations (Schaltfehlerschutz) · CPC title