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 Title: |
US6046917:
Controlled rectifier bridge and system
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Gibbs, Irving A.; Fletcher, NC
Quayle, Bruce R.; Pittsburgh, PA
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| Assignee: |
Eaton Corporation, Cleveland, OH
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| Published / Filed: |
2000-04-04
/ 1999-05-03
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| Application Number: |
US1999000304480
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| IPC Code: |
Advanced:
H02M 1/00;
H02M 1/32;
H02M 7/155;
Core:
H02M 7/12;
more...
IPC-7:
H02M 5/458;
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| ECLA Code: |
H02M1/32; H02M7/155C;
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| U.S. Class: |
Current:
363/069;
363/052;
Original:
363/069;
363/052;
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| Field of Search: |
363/052,53,65,67,69,70
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| Priority Number: |
| 1999-05-03 |
US1999000304480 |
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| Abstract: |
A controlled rectifier or SCR bridge converts a plurality of alternating current voltages from a plurality of alternating current phases to a rectified voltage. The bridge includes an input interconnected with the alternating current phases and an output having the rectified voltage. The bridge has a segment for each of the positive and negative polarities of the alternating current phases. Each of the segments has an SCR responsive to a control signal in order to control current conduction within the segment between the input and the output of the bridge. A phase control circuit outputs some of the control signals to some of the segments in order to control current conduction within the segments. A phase lock loop or startup circuit detects an abnormal condition of the AC voltages of the alternating current phases. A force firing circuit repetitively and simultaneously outputs all of the control signals to the segments in response to the abnormal AC phase conditions in order that the SCR bridge emulates a diode bridge.
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| Attorney, Agent or Firm: |
Moran, Martin J. ;
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| Primary / Asst. Examiners: |
Berhane, Adolf Deneke;
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
Show legal status actions
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| Parent Case: |
CROSS REFERENCE TO RELATED APPLICATION
This Application is related to commonly assigned, copending application Ser. No. 09/304,749, filed May 03, 1999, entitled "Excitation Control System for Rotating Electrical Apparatus" by Gibbs.
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| Family: |
None
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First Claim:
Show all 20 claims |
What is claimed is:
1. A controlled rectifier bridge for converting a plurality of alternating current (AC) voltages from a plurality of alternating current phases to a rectified voltage, each of said alternating current phases having a positive polarity and a negative polarity, said controlled rectifier bridge comprising:
- an input interconnected with said alternating current phases;
- an output having said rectified voltage;
- a segment for each of the positive and negative polarities of said alternating current phases, each of said segments having an element responsive to a control signal in order to control current conduction within said segment between the input and the output of said controlled rectifier bridge;
- means for outputting some of the control signals to some of said segments in order to control current conduction within said segments;
- means for detecting an abnormal condition of the AC voltages of said alternating current phases; and
- means for repetitively and simultaneously outputting all of the control signals to said segments in response to said abnormal condition in order that said controlled rectifier bridge emulates a diode bridge.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 14 U.S. patent(s) that reference this one
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