Regulating transformer rectifier unit with multiple circuits for preventing output overvoltage

Patent metadata

Field	Value
Publication number	US-9973097-B2
Application number	US-201615188723-A
Country	US
Kind code	B2
Filing date	Jun 21, 2016
Priority date	Jun 21, 2016
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A power supply system and related method for providing a regulated DC output from an unregulated AC input includes a Vienna rectifier having power factor correction circuitry and a series resonant DC to DC converter to provide a regulated DC output. The power supply system further includes one or more compensator circuits coupled in feedback configuration to control the Vienna rectifier and/or the DC to DC converter and avoid a potentially dangerous over-voltage condition at the regulated DC output.

First claim

What is claimed:

1. A power supply system for providing a regulated DC output from an AC input comprising:
a rectifier for converting said AC input into a rectified DC output,
a DC to DC converter coupled to said rectifier for providing a regulated DC output,
a first compensator circuit coupled to monitor the output of said DC to DC converter,
a second compensator circuit coupled to monitor the output of the rectifier, said first and second compensator circuits each coupled to provide feedback control of said rectifier to prevent an over-voltage at the regulated DC output,

wherein said second compensator circuit limits the output of the rectifier when a fault occurs in said first compensator circuit.

2. The power supply system of claim 1 , wherein said first compensator circuit limits the output of the rectifier when a fault occurs in said second compensator circuit.

3. A power supply system for providing a regulated DC output from an AC input comprising:
a rectifier for converting said AC input into a rectified DC output,
a DC to DC converter coupled to said rectifier for providing a regulated DC output,
a first compensator circuit coupled to monitor the output of said DC to DC converter,
a second compensator circuit coupled to monitor the output of the rectifier, said first and second compensator circuits each coupled to provide feedback control of said rectifier to prevent an over-voltage at the regulated DC output,
a third compensator circuit to provide feedback control of the DC to DC converter to prevent an over voltage at the regulated DC output,
wherein said third compensator circuit limits the regulated DC output in case a fault in the first and second compensator circuits would produce an over voltage at the regulated DC output.

4. The power supply system of claim 3 wherein one of said first, second or third compensator circuits controls the DC output voltage to prevent an over voltage in case a fault in one or more of the other compensator circuits would produce an over voltage at the regulated DC output.

5. A power supply system for providing a regulated DC output from an AC input comprising:
a Vienna rectifier,
a series resonant DC to DC converter coupled to said Vienna rectifier for providing a regulated DC output,
a first compensator circuit coupled to monitor the output of said DC to DC converter,
a second compensator circuit coupled to monitor the output of the Vienna rectifier, said first and second compensator circuits coupled to provide feedback control of the Vienna rectifier and prevent an over-voltage at the regulated DC output,
wherein said first compensator circuit limits the output of the rectifier when a fault occurs in said second compensator circuit.

6. The power supply system of claim 5 further including a third compensator circuit to provide feedback control of the DC to DC converter to prevent an over voltage condition at the regulated DC output.

7. The power supply system of claim 6 , wherein said third compensator circuit limits the regulated DC output in case a fault in the first and second compensator circuits would produce an over voltage at the regulated DC output.

8. The power supply system of claim 6 wherein one said first, second or third compensator circuits controls the DC output voltage an over voltage in case a fault in one or more of the other compensator circuits would produce an over voltage at the regulated DC output.

Assignees

• Astronics Advanced Electronic Systems Corp

Inventors

• Wambsganss Warren J

Classifications

• H02M1/44

  Circuits or arrangements for compensating for electromagnetic interference in converters or inverters · CPC title

• H02M3/33546 Primary

  with automatic control of the output voltage or current (H02M3/33561 takes precedence) · CPC title

• B64D47/00

  Equipment not otherwise provided for · CPC title

• H02M1/4216

  operating from a three-phase input voltage (H02M1/4233 takes precedence) · CPC title

• H02M1/36

  Means for starting or stopping converters · CPC title