AC power transfer over self-passivating connectors

Patent metadata

Field	Value
Publication number	US-11005390-B2
Application number	US-201816200147-A
Country	US
Kind code	B2
Filing date	Nov 26, 2018
Priority date	Nov 26, 2018
Publication date	May 11, 2021
Grant date	May 11, 2021

Abstract

Methods and systems to transform an alternating current into constant-polarity constant or pulsed voltages, provide these to a first group of contacts of an electrical connector assembly such that none of the contacts is subjected to polarity reversal, receive the constant-polarity constant or pulsed voltages from a second group of contacts of the electrical connector assembly, and reconstruct the alternating current from these voltages.

First claim

What is claimed is:

1. A system for providing an alternating current (AC) or voltage over a plurality of electrical contacts, wherein one or more of the electrical contacts cannot tolerate polarity reversal, the system comprising:
an AC source;
an AC deconstruction circuit configured to receive an alternating current from the AC source, transform the alternating current from the AC source into a constant-polarity voltage signal, and provide the constant-polarity voltage signal to the electrical contacts such that none of the electrical contacts is subjected to a polarity reversal; and
an AC reconstruction circuit to reconstruct the alternating current across the load, the AC reconstruction circuit comprising a control circuit configured to control switch circuits to alternately reverse connections between first and second nodes of a load based on a signal amplitude at a first contact of the electrical contacts.

2. The system of claim 1 , wherein the control circuit includes:
a comparator configured to generate a pulse when the signal amplitude at the first contact of the electrical contacts is below a reference amplitude; and
a flip-flop to toggle states of the switch circuits in response to the pulse.

3. The system of claim 1 , further comprising an electrical connector assembly disposed between the AC deconstruction circuit and the AC reconstruction circuit, wherein the electrical contacts are part of the electrical connector assembly.

4. The system of claim 3 , wherein the electrical connector assembly includes a first connector with a first group of the electrical contacts and a second connector with a second group of the electrical contacts configured to mate with the first group of electrical contacts.

5. The system of claim 4 , wherein one or more of the electrical contacts in each of the first and second groups of electrical contacts are self-passivating electrical contacts.

6. The system of claim 5 , wherein the self-passivating electrical contacts in the first and second groups are disposed within an electrolytic environment.

7. A method for providing an alternating current over a plurality of electrical contacts, wherein one or more of the electrical contacts cannot tolerate polarity reversal, the method comprising:
transforming the alternating current into a constant-polarity voltage signal;
providing the constant-polarity voltage signal over the plurality of electrical contacts to a reconstruction circuit such that none of the electrical contacts is subjected to a polarity reversal;
receiving the constant-polarity voltage signal at the reconstruction circuit via the electrical contacts; and
reconstructing the alternating current from the constant-polarity voltage signal by controlling switch circuits to alternately reverse connections between the first and second nodes of a load based on a signal amplitude at a first contact of the electrical contacts.

8. The method of claim 7 , wherein the controlling step includes:
generating a pulse when the signal amplitude at the first contact of the electrical contacts is below a reference amplitude; and
toggling states of the switch circuits in response to the pulse.

9. The method of claim 7 , wherein the electrical contacts include a first group of self-passivating electrical contacts and a second group of self-passivating electrical contacts configured to mate with the first group, and further comprising the steps of:
mating the first group of self-passivating electrical contacts with the second group of self-passivating electrical contacts; and
disposing the first and second groups of self-passivating electrical contacts in an electrolytic environment.

Assignees

• Northrop Grumman Systems Corp

Inventors

• Windgassen James R
• Hack Harvey P

Classifications

• H02M5/458 Primary

  using semiconductor devices only · CPC title

• H01R13/523

  for use under water · CPC title

• H01R13/03

  characterised by the material, e.g. plating, or coating materials · CPC title

• H02M7/5387 Primary

  in a bridge configuration · CPC title

• H02M7/06

  using discharge tubes without control electrode or semiconductor devices without control electrode · CPC title