MULTI-CHANNEL WOUND-FIELD SYNCHRONOUS MACHINE

• US 20140191606A1
• Filed: 01/10/2013
• Published: 07/10/2014
• Est. Priority Date: 01/10/2013
• Status: Abandoned Application

• Current Assignee: Hamilton Sundstrand Corporation (Rtx Corporation)
• Original Assignee: Hamilton Sundstrand Corporation (Rtx Corporation)
• Inventors: Gieras, Jacek F., Rozman, Gregory I.
• Application Number:
  US13/738,481
• Publication Number:
  US 20140191606A1
• Time in Patent Office: Days
• US Class Current: 310/112
• CPC Class Codes: H02K 11/33 Drive circuits, e.g. power electronics H02K11/38 takes precedence
• CPC Class Codes: H02K 15/06 Embedding prefabricated windings in machines
• CPC Class Codes: H02K 16/00 Machines with more than one rotor or stator machines for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts H02K51/00; permanent magnet machines with multiple rotors or stators relatively rotated for vectorially combining the excitation fields or the armature voltages H02K21/029
• CPC Class Codes: H02K 19/22 having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators
• CPC Class Codes: H02K 19/38 Structural association of synchronous generators with exciting machines
• CPC Class Codes: H02K 2213/06 Machines characterised by the presence of fail safe, back up, redundant or other similar emergency arrangements
• CPC Class Codes: Y10T 29/49009 Dynamoelectric machine

Abstract

A multi-channel wound-field synchronous machine and method of assembling a multi-channel axial-flux wound-field synchronous machine are described. The machine includes an even number of stators and a plurality of field-excitation windings, each of the plurality of field-excitation windings being associated with a respective one of the stators. The machine also includes an exciter to feed all of the plurality of field-excitation windings.

Claims

1. A multi-channel axial-flux wound-field synchronous machine, comprising:

an even number of stators;

a plurality of field-excitation windings, each of the plurality of field-excitation windings being associated with a respective one of the stators; and

an exciter that feeds all of the plurality of field-excitation windings.

2. The machine according to claim 1, wherein the exciter is a brushless exciter comprising a field excitation winding and a single-phase or poly-phase armature system.

3. The machine according to claim 2, further comprising a hollow shaft configured to carry electrical connections between the single-phase or poly-phase armature system of the brushless exciter, rotating power electronics, and the plurality of field-excitation windings.

4. The machine according to claim 1, further comprising a housing configured to enclose the stators and the plurality of field-excitation windings.

5. The machine according to claim 1, further comprising one or more rotors, each of the one or more rotors associated with a respective pair of the stators.

6. The machine according to claim 1, wherein two or more of the stators may be connected in parallel to provide a redundant power supply.

7. A method of assembling a multi-channel axial-flux wound-field synchronous machine, the method comprising:

disposing an even number of poly-phase stators in a housing;

disposing a plurality of rotor field-excitation windings in the housing and associating each of the plurality of rotor field-excitation windings with a respective one of the stators; and

disposing an exciter in the housing, the exciter being coupled to the plurality of rotor field-excitation windings.

8. The method according to claim 7, wherein disposing the exciter includes disposing a brushless exciter comprising a rotor field excitation winding and a single-phase or poly-phase armature system.

9. The method according to claim 8, further comprising disposing a hollow shaft across the housing, the shaft carrying electrical connections between the single-phase or poly-phase armature system of the brushless exciter, rotating power electronics, and the plurality of rotor field-excitation windings.

10. The method according to claim 7, further comprising disposing one or more rotors in the housing, each of the one or more rotors being associated with a respective pair of the poly-phase stators.

11. The method according to claim 7, further comprising connecting two or more of the poly-phase stators in parallel to provide a redundant power supply.

12. The method according to claim 7, further comprising providing each of the poly-phase stators as an individual power supply.