Wheel drive system for aircraft

Patent metadata

Field	Value
Publication number	US-9950784-B2
Application number	US-201514673315-A
Country	US
Kind code	B2
Filing date	Mar 30, 2015
Priority date	Apr 1, 2014
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

Provided is a wheel drive system for aircraft RS including a motor 2 that is connected to a wheel 12 , and provided with two voltage supply lines L 1 and L 2 for supplying the voltages Vta and Vpr with varying the length of a winding 21 to be energized; a voltage supply unit for supplying the voltage Vta and Vpr to the two voltage supply lines L 1 and L 2 ; and a control unit 8 for controlling the voltage supply unit, wherein the control unit 8 is configured to select one of the two voltage supply lines L 1 and L 2 , and supply the voltage Vta or Vpr, by controlling the voltage supply unit.

First claim

What is claimed is:

1. A wheel drive system for aircraft, comprising
a motor that is connected to a wheel, and has a first voltage supply line having a first winding length and a second voltage supply line having a second winding length different from the first winding length such that voltage is varied when either receives a supply;
a voltage supply unit that supplies a voltage to the first voltage supply line and the second voltage supply line; and
a control unit for controlling the voltage supply unit, wherein
the control unit is configured to select one of the first voltage supply line and the second voltage supply line and supply a voltage to the selected voltage supply line, by controlling the voltage supply unit.

2. The wheel drive system for aircraft according to claim 1 , wherein
a winding provided in the motor includes a dividing point inside, and
the first voltage supply line is connected to one end and the other end of the winding, and the second voltage supply line is connected to the one end and the dividing point.

3. The wheel drive system for aircraft according to claim 2 , wherein
the winding is configured by connecting a plurality of winding elements in series, and the dividing point is set in any one of connecting portions of adjacent winding elements.

4. The wheel drive system for aircraft according to claim 2 , wherein
the voltage supply unit comprises a first voltage supply unit for supplying a voltage to the first voltage supply line, and a second voltage supply unit for supplying a voltage to the second voltage supply line, and
a circuit opening and closing unit for opening and closing an electrical circuit configured between the first voltage supply unit and the winding is provided on the first voltage supply line.

5. The wheel drive system for aircraft according to claim 3 , wherein
the voltage supply unit comprises a first voltage supply unit for supplying a voltage to the first voltage supply line, and a second voltage supply unit for supplying a voltage to the second voltage supply line, and
a circuit opening and closing unit for opening and closing an electrical circuit configured between the first voltage supply unit and the winding is provided on the first voltage supply line.

6. The wheel drive system for aircraft according to claim 4 , wherein
the motor has multiple phases, and has the winding for each phase, one end of each winding is connected to each other at a neutral point, and further connected to a power supply line through the neutral point, and
the wheel drive system further comprises a neutral point connecting and disconnecting unit that enables an electrical connection and disconnection between the neutral point and one end of each winding.

7. The wheel drive system for aircraft according to claim 5 , wherein
the motor has multiple phases, and has the winding for each phase, one end of each winding is connected to each other at a neutral point, and further connected to a power supply line through the neutral point, and
the wheel drive system further comprises a neutral point connecting and disconnecting unit that enables an electrical connection and disconnection between the neutral point and one end of each winding.

Assignees

• Sinfonia Technology Co Ltd
• Ihi Aerospace Co Ltd
• Sumitomo Precision Prod Co

Inventors

• Saito Hiroshi
• Nakanishi Nobuyuki
• Oyori Hitoshi
• Takada Masayuki

Classifications

• B64C25/40

  the elements being rotated before touch-down · CPC title

• B64C25/405 Primary

  Powered wheels, e.g. for taxing · CPC title

• Y02T50/823

  Cross-Sectional Technologies · mapped topic

• B64C25/34

  wheeled type, e.g. multi-wheeled bogies · CPC title

• Y02T50/80

  Energy efficient operational measures, e.g. ground operations or mission management · CPC title