DC synchronous machine

Patent metadata

Field	Value
Publication number	US-10075106-B2
Application number	US-201514683468-A
Country	US
Kind code	B2
Filing date	Apr 10, 2015
Priority date	Apr 10, 2015
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

An assembly for a direct current (DC) synchronous machine, according to an exemplary aspect of the present disclosure includes, among other things, a stationary portion including a direct current (DC) armature winding and a rotating portion including alternating current (AC) field winding configured to supply DC output to the DC armature winding. A rotating inverter is configured to selectively communicate current to the AC field winding such that a frequency of the current is adjusted to approach synchronization with a position of the rotating portion. A method for generating DC output from a DC synchronous machine is also disclosed.

First claim

We claim:

1. A synchronous machine comprising:
a stationary portion including an armature winding;
a rotating portion including a rotating inverter coupled to a field winding, the field winding including a direct winding and a quadrature winding separated from the armature winding to define an air gap; and
wherein the rotating inverter is configured to communicate current to the field winding such that a frequency of the current is adjusted to approach synchronization with a position of the rotating portion;
wherein the field winding is a two-phase field winding, the rotating inverter includes two H-bridges, one of the two H-bridges is coupled to the direct winding, and another one of the two H-bridges is coupled to the quadrature winding.

2. The synchronous machine as recited in claim 1 , comprising a rotor energy source configured to supply current to the rotating inverter.

3. A synchronous machine comprising:
a stationary portion including an armature winding;
a rotating portion including a rotating inverter coupled to a field winding, the field winding including a direct winding and a quadrature winding separated from the armature winding to define an air gap; and
wherein the rotating inverter is configured to communicate current to the field winding such that a frequency of the current is adjusted to approach synchronization with a position of the rotating portion;
a rotor energy source configured to supply current to the rotating inverter; and
wherein the rotor energy source is a rechargeable power source.

4. The synchronous machine as recited in claim 2 , wherein the rotor energy source is one of a synchronous exciter, and a high frequency power transformer.

5. The synchronous machine as recited in claim 4 , wherein the rotating portion includes a rotating rectifier coupling the rotor energy source to the rotating inverter.

6. A method for generating output from a synchronous machine, comprising:
generating a rotating magnetic field between an field winding and an armature winding in response to communicating current from a rotating inverter to the field winding, the field winding including a direct winding and a quadrature winding; and
adjusting a frequency of the current to approach synchronization with a position of a rotating portion of the synchronous machine;
wherein the field winding is a two-phase field winding; and
wherein the rotating inverter includes a first H-bridge coupled to the direct winding and a second H-bridge coupled to the quadrature winding.

7. The method of claim 6 , further comprising:
supplying power from a rotor energy source to the rotating inverter; and
wherein the rotor energy source is one of a synchronous exciter, a high frequency power transformer, and a rechargeable power source.

8. The method of claim 7 , wherein the rotor energy source and the rotating inverter are coupled to a rotating rectifier.

9. The synchronous machine as recited in claim 1 comprising a rotor energy source configured to supply current to the rotating inverter, wherein the rotating portion includes a rotating rectifier coupling the rotor energy source to the rotating inverter.

10. The method of claim 7 , further comprising:
supplying power from a rotor energy source to the rotating inverter; and wherein the rotating portion includes a rotating rectifier coupling the rotor energy source to the rotating inverter.

11. The synchronous machine as recited in claim 2 , wherein the rotor energy source is a rechargeable power source.

12. The method of claim 7 , wherein the rotor energy source is a rechargeable power source.

13. The method of claim 8 , wherein the rotor energy source is a rechargeable power source.

14. synchronous machine as recited in claim 9 , wherein the rotor energy source is a rechargeable power source.

15. The method of claim 10 , wherein the rotor energy source is a rechargeable power source.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Rozman Gregory I
• Gieras Jacek F
• Moss Steven J

Classifications

• H02P2101/30

  for aircraft · CPC title

• H02P9/30

  using semiconductor devices · CPC title

• H02K19/365 Primary

  with a voltage regulator · CPC title

• H02P6/002 Primary

  Electricity · mapped topic

• H02P9/14

  by variation of field (H02P9/08, H02P9/10 take precedence) · CPC title