Virtual Electronic Circuit Breaker

Inactive Publication Date: 2017-04-13
ASTRONICS ADVANCED ELECTRONICS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]Disclosed is a virtual electronic circuit breaker (VECB) having an electrical relay and a control circuit. The electrical relay is effective to control the power flow of a power line. The control circuit has a load and wire protection (“OC”) detection unit, a microprocessor and a d

Problems solved by technology

The thermal circuit breaker/power relay solution has a long service history, but this combination can be bulky and labor intensive for installation and trouble shooting.
However, SSPCs ar

Method used

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Examples

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Embodiment Construction

[0024]FIG. 1 is a schematic diagram of one embodiment of the VECB. A power bus 101, which may be a source of limited power, such as a generator on an aircraft, supplies an amount of power flow along power line 102, which is in this embodiment carrying 3-phase AC power. It should be understood that the disclosed subject matter can be utilized with 1-phase AC and 3-phase AC power, as well as other power configurations, including without limitation 28VDC and 270VDC. Electrical relay 103 is effective to control this power flow. For example, relay 103 can allow power to flow from power bus 101 to load 104 or, inversely, prevent such flow. Various electrical relays are suitable for use with the disclosed subject matter, including by way of example commercially available OTS units. Control circuit 105 includes OC detection unit 106, microprocessor 107 and driver 108. Upon receipt of a deactivation command, driver 108 is effective to cause relay 103 to stop the flow of power in power line 1...

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Abstract

A virtual electronic circuit breaker having an electrical relay and a control circuit, the control circuit including a load and wire protection (“OC”) detection unit, a microprocessor and a driver. The OC detection unit is configured to monitor a power flow and the electrical relay is effective to control it. The driver is effective to cause the relay to stop the power flow upon receipt of a deactivation command. The OC detection unit is effective to cause the driver to receive a deactivation command if the OC detection unit senses that a short circuit condition or an overload condition exists. The microprocessor of the control unit is configured so as to be capable of, at least, receiving input from the OC detection unit and sending output to the driver.

Description

FIELD OF THE DISCLOSURE[0001]The subject matter of the present disclosure generally relates to circuit control devices, and more particularly relates to virtual circuit breakers utilizing microprocessors.BACKGROUND OF THE DISCLOSURE[0002]Control devices for circuits are important in many electrical applications. For instance, various circuit breaker designs that are useful in numerous applications have been previously developed and disclosed.[0003]In current aerospace power distribution systems, electrical loads are fed through a thermal circuit breaker and a power relay connected in-series, in order to provide load and wire protection (over-current or “OC”) and load On / Off control (switching). Alternatively, a Solid State Power Controller (SSPC) may be used to perform these same functions.[0004]The thermal circuit breaker / power relay solution has a long service history, but this combination can be bulky and labor intensive for installation and trouble shooting. The SSPC solution ha...

Claims

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Application Information

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IPC IPC(8): H02H3/16H02H3/00H02H1/00
CPCH02H3/165H02H3/00H02H1/0092H02H1/06H02H3/083H02H3/105
Inventor VAZIRI, MASSOUD
Owner ASTRONICS ADVANCED ELECTRONICS SYST
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