# US 2023/0412104 A1 · Multiphase winding arrangment in electric machines for mitigating short-circuit fault currents

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- Number: US 2023/0412104 A1
- Document ID: US20230412104A1
- Status: Published application
- Kind: A1
- Application number: 18/332,561
- Filed: 2023-06-09
- Published: 2023-12-21
- Earliest claimed: 2022-06-17
- Assignees: Board of Regents, The University of Texas System
- Applicants: Board of Regents, The University of Texas System
- Inventors: Matthew C. Gardner; Ahmad Daniar; Prasad Enjeti
- Web page: https://patentgrep.com/patent/US20230412104A1

## CPC

- H02P 25/22: Multiple windings; Windings for more than three phases
- H02K 3/28: Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32)
- H02P 2207/055: Surface mounted magnet motors
- H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

An electrical machine including a stator. The stator includes slots to house conductors, the conductors arranged in the slots to provide a winding arrangement where: turns of a first conductor winding are not adjacent to each other, turns of a second conductor winding are not adjacent to each other, and the turns of the first conductor winding and the turns of the second conductor winding do not share a common neutral point and are not connected to each other in series or parallel.

## Claims

### Claim 1

An electrical machine comprising:
a stator, the stator including slots to house conductors, the conductors arranged in the slots to provide a winding arrangement wherein:
turns of a first conductor winding are not adjacent to each other,
turns of a second conductor winding are not adjacent to each other, and
the turns of the first conductor winding and the turns of the second conductor winding do not share a common neutral point and are not connected to each other in series or parallel.

### Claim 2 (depends on 1)

The electrical machine of claim 1, wherein the turns of the first conductor are interleaved with the turns of the second conductor.

### Claim 3 (depends on 1)

The electrical machine of claim 1, further including a rotor wherein the stator is situated within the rotor.

### Claim 4 (depends on 1)

The electrical machine of claim 1, further including a rotor wherein the stator is situated axially beyond the rotor.

### Claim 5 (depends on 1)

The electrical machine of claim 1, further including a rotor wherein the stator is situated around the rotor.

### Claim 6 (depends on 5)

The electrical machine of claim 5, wherein the rotor includes a permanent magnet.

### Claim 7 (depends on 5)

The electrical machine of claim 5, wherein the rotor includes permanent magnets that are arranged to have opposite polarity alignments with respect to each other.

### Claim 8 (depends on 1)

The electrical machine of claim 1, wherein the electrical machine includes a motor.

### Claim 9 (depends on 1)

The electrical machine of claim 1, wherein the electrical machine includes a generator.

### Claim 10 (depends on 1)

The electrical machine of claim 1, further including a current source inverter to drive the electric machine with the winding arrangement.

### Claim 11 (depends on 1)

The electrical machine of claim 1, further including a voltage source inverter to drive the electric machine with the winding arrangement.

### Claim 12 (depends on 11)

The electrical machine of claim 11, wherein a magnitude or a phase of a voltage supplied by the voltage source inverter to one of the first conductor or to the second conductor is different from the magnitude or a phase of a voltage supplied by the voltage source inverter to the other one of the second conductor or to the first conductor.

### Claim 13 (depends on 11)

The electrical machine of claim 11, further including an inductor or a choke connected between the voltage source inverter and the first conductor or the second conductor.

### Claim 14 (depends on 11)

The electrical machine of claim 11, further including an inductor or a choke connected to a DC voltage line to the voltage source inverter.