High speed generator connection assembly

Patent metadata

Field	Value
Publication number	US-11245312-B2
Application number	US-201916456369-A
Country	US
Kind code	B2
Filing date	Jun 28, 2019
Priority date	Jun 28, 2019
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

A rotor pack for a generator has an exciter rotor rotating with a shaft. A rectifier assembly is in electric communication with the exciter rotor to receive AC current and rectify the AC current into a DC voltage. Positive and negative busses extend from the rectifier assembly to a negative rail and a positive rail on a connection assembly. The negative rail is in contact with the shaft to provide a ground connection. The negative and positive rails are formed of a metal. The negative and positive rails are connected to a main field winding. A high speed generator is also disclosed.

First claim

The invention claimed is:

1. A rotor pack for a generator comprising:
an exciter rotor rotating with a shaft;
a rectifier assembly in electric communication with said exciter rotor to receive AC current and rectify the AC current into a DC voltage, a positive bus and a negative bus extending from said rectifier assembly, with said negative bus extending into a negative rail on a connection assembly, and said positive bus connecting into a positive rail on said connection assembly, said negative rail is in contact with said shaft to provide a ground connection for said negative rail, said negative and positive rails are formed of a metal;
said negative and positive rails connected to a main field winding;
wherein said positive bus is connected to a positive pin in said connection assembly, said positive pin is connected to provide a connection to a positive spring clip received in a pocket in an insulator, and a positive electric connection connected to said positive spring clip, said positive electric connection extending radially outwardly from said positive spring clip to provide a positive connection to said main field; and
wherein said negative rail including a groove receiving a plug from said insulator, and said positive spring clip received within a pocket in said plug.

2. The rotor pack as set forth in claim 1 , wherein said positive rail and said negative rail are formed of aluminium.

3. The rotor pack as set forth in claim 1 , wherein said negative bus is connected to a negative pin in said connection assembly, said negative pin is connected to provide a connection to a negative spring clip received in a pocket in said negative rail, and a negative electric connection extending radially outwardly from said negative rail to provide a negative connection to said main field winding, said negative spring clip includes a pair of loops with said negative pin extending into one of said loops and said negative electric connection being received between said loops, said loops biased toward each other and against said negative electric connection when received in said pocket.

4. The rotor pack as set forth in claim 3 , wherein said positive bus is connected to a positive pin in said connection assembly, said positive pin is connected to provide a connection to a positive spring clip received in a pocket in an insulator, and a positive electric connection connected to said positive spring clip, said positive electric connection extending radially outwardly from said positive spring clip to provide a positive connection to said main field.

5. The rotor pack as set forth in claim 4 , wherein said negative rail including a groove receiving a plug from said insulator, and said positive spring clip received within a pocket in said plug.

6. The rotor pack as set forth in claim 5 , wherein a ceramic suppression resistor is biased against said positive rail, a bias force on said ceramic suppression resistor is provided by a metal retention spring received in a bore in said negative rail, and in contact with said negative rail.

7. The rotor pack as set forth in claim 1 , wherein a ceramic suppression resistor is biased against said positive rail and a bias force on said ceramic suppression register is provided by a metal retention spring received in a bore in said negative rail, and in contact with said negative rail.

8. A rotor pack for a generator comprising:
an exciter rotor rotating with a shaft;
a rectifier assembly in electric communication with said exciter rotor to receive AC current and rectify the AC current into a DC voltage, a positive bus and a negative bus extending from said rectifier assembly, with said negative bus extending into a negative rail on a connection assembly, and said positive bus connecting into a positive rail on said connection assembly, said negative and positive rails are formed of a metal;
said negative and positive rails connected to a main field winding; and
said negative bus is connected to a negative pin in said connection assembly, said negative pin is connected to provide a connection to a negative spring clip received in a pocket in said negative rail, and a negative electric connection extending radially outwardly from said negative rail to provide a negative connection to said main field winding.

9. The rotor pack set forth in claim 8 , wherein said positive bus is connected to a positive pin in said connection assembly, said positive pin is connected to provide a connection to a positive spring clip received in a pocket in an insulator, and a positive electric connection connected to said positive spring clip, said positive electric connection extending radially outwardly from said positive spring clip to provide a positive connection to said main field.

10. The rotor pack as set forth in claim 9 , wherein said negative rail including a groove receiving a plug from said insulator, and said positive spring clip received within a pocket in said plug.

11. The rotor pack as set forth in claim 8 , wherein said positive rail and said negative rail are formed of aluminium.

12. The rotor pack as set forth in claim 11 , said negative spring clip includes a pair of loops with said negative pin extending into one of said loops and said negative electric connection being received between said loops, said loops biased toward each other and against said negative electric connection when received in said pocket.

13. A high speed generator comprising:
an exciter stator surrounding an exciter rotor and a main stator surrounding a main field winding;
said exciter rotor rotating with a shaft;
a rectifier assembly in electric communication with said exciter rotor to receive AC current and rectify the AC current into a DC voltage, a positive bus and a negative bus extending from said rectifier assembly, with said negative bus extending into a negative rail on a connection assembly, and said positive bus connecting into a positive rail on said connection assembly, said negative rail is in contact with said shaft to provide a ground connection for said negative rail, said negative and positive rails are formed of a metal;
said negative and positive rails connected to said main field winding;
wherein a ceramic suppression resistor is biased against said positive rail; and
wherein a bias force on said ceramic suppression resistor is provided by a metal retention spring received in a bore in said negative rail, and in contact within said negative rail.

14. The high speed generator as set forth in claim 13 , wherein said positive rail and said negative rail are formed of aluminium.

15. The high speed generator as set forth in claim 14 , wherein said negative bus is connected to a negative pin in said connection assembly, said negative pin is connected to provide a connection to a negative spring clip received in a pocket in said negative rail, and a negative electric connection extending radially outwardly from said negative rail to provide a negative connection to said main field winding.

16. The high speed generator as set forth in claim 15 , wherein said negative spring clip includes a pair of loops with said negative pin extending into one of said loops and said negative electric connection being received between said loops, said loops biased toward each other and against said negative electric connection when received in said pocket.

17. The high speed generator as set forth in claim 16 , wherein said positive bus is connected to a positive pin in said connection assembly, said positive pin is connected to provide a connection to a positive spring clip received

Assignees

• Hamilton Sundstrand Corp

Inventors

• Patel Dhaval
• Allen Edward C
• Wilkinson Andrew R

Classifications

• H02K11/042 Primary

  Rectifiers associated with rotating parts, e.g. rotor cores or rotary shafts · CPC title

• H02K19/16 Primary

  Synchronous generators · CPC title

• H02K11/04

  for rectification · CPC title

• H02K11/046

  Electricity · mapped topic