FAULT TOLERANT AC RECTIFICATION

• US 20190326828A1
• Filed: 04/19/2018
• Published: 10/24/2019
• Est. Priority Date: 04/19/2018
• Status: Abandoned Application

• Current Assignee: Hamilton Sundstrand Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Hamilton Sundstrand Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Fox, Brennan
• Application Number:
  US15/957,014
• Publication Number:
  US 20190326828A1
• Time in Patent Office: Days
• CPC Class Codes: H02H 7/1255 responsive to internal faults, e.g. by monitoring ripple in output voltage
• CPC Class Codes: H02M 1/32 Means for protecting converters other than automatic disconnection
• CPC Class Codes: H02M 1/325 with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
• CPC Class Codes: H02M 7/06 using discharge tubes without control electrode or semiconductor devices without control electrode

Abstract

A rectifier includes a first input, a first output, and a first pair of diodes. The first input is configured to receive a first alternating current (AC) voltage. The first pair of diodes is electrically coupled in series between the first input and the first output. The first pair of diodes is configured to rectify the first AC voltage. The first output is configured to output the first rectified AC voltage.

Claims

1. A rectifier comprising:

a first input configured to receive a first alternating current (AC) voltage;

a first output; and

a first pair of diodes electrically coupled in series between the first input and the first output, the first pair of diodes configured to rectify the first AC voltage, and

wherein the first output is configured to output the first rectified AC voltage.

2. The rectifier of claim 1, further comprising:

a second input configured to receive a second AC voltage; and

a second pair of diodes electrically coupled in series between the second input and the first output, the second pair of diodes configured to rectify the second AC voltage, and

wherein the first output is configured to output the first and second rectified AC voltage.

3. The rectifier of claim 2, further comprising:

a third input configured to receive a third AC voltage; and

a third pair of diodes electrically coupled in series between the third input and the first output, the third pair of diodes configured to rectify the third AC voltage, and

wherein the first output is further configured to output the first, second, and third rectified AC voltage.

4. The rectifier of claim 3, further comprising:

a second output; and

a fourth pair of diodes electrically coupled in series between the first input and the second output; and

a fifth pair of diodes electrically coupled in series between the second input and the second output; and

a sixth pair of diodes electrically coupled in series between the third input and the second output.

5. The rectifier of claim 1, wherein the rectifier does not include a resistor electrically coupled between the first input and the first pair of diodes.

6. An AC rectification system comprising:

a plurality of AC voltage sources configured to provide a plurality of AC voltages; and

a plurality of rectifiers of claim 1 configured to rectify the plurality of AC voltages provided by the plurality of AC voltage sources.

7. The AC rectification system of claim 6, wherein at least one of the plurality of rectifiers is a full wave rectifier.

8. The AC rectification system of claim 6, wherein at least one of the plurality of rectifiers is configured to rectify two or more AC voltages of the plurality of AC voltages provided by the plurality of AC voltage sources.

9. The AC rectification system of claim 6, further comprising a rectifier of claim 4, the rectifier configured to provide full wave rectification to at least three AC voltages provided by the plurality of AC voltage sources.

10. A system comprising:

a first alternating current (AC) voltage source configured to provide a first AC voltage;

a rectifier comprising;

a first input configured to receive a first alternating current (AC) voltage;

a first output; and

a first pair of diodes electrically coupled in series between the first input and the first output, the first pair of diodes configured to rectify the first AC voltage, and

wherein the first output is configured to output the first rectified AC voltage.

11. The system of claim 10, further comprising a second AC voltage source configured to provide a second AC voltage, and wherein the rectifier further comprises:

a second input configured to receive a second AC voltage; and

a second pair of diodes electrically coupled in series between the second input and the first output, the second pair of diodes configured to rectify the second AC voltage, and

wherein the first output is configured to output the first and second rectified AC voltage.

12. The system of claim 10, further comprising a third AC voltage source configured to provide a third AC voltage.

13. The system of claim 12, wherein the rectifier further comprises:

a third input configured to receive the third AC voltage; and

a third pair of diodes electrically coupled in series between the third input and the first output, the third pair of diodes configured to rectify the third AC voltage, and

wherein the first output is further configured to output the third rectified AC voltage.

14. The system of claim 13, wherein the rectifier further comprises:

a second output; and

a fourth pair of diodes electrically coupled in series between the first input and the second output; and

a fifth pair of diodes electrically coupled in series between the second input and the second output; and

a sixth pair of diodes electrically coupled in series between the third input and the second output.

15. The system of claim 10, wherein the rectifier does not include a resistor electrically coupled between the first input and the first pair of diodes.

16. The system of claim 10, further comprising a sensor electrically coupled to the first output.

17. The system of claim 12, wherein the sensor is configured to detect a short of the first and/or second AC voltage sources.

18. The system of claim 10, wherein the system is a system of an aircraft.