Power conversion system and flight vehicle

Patent metadata

Field	Value
Publication number	US-2024258930-A1
Application number	US-202318399814-A
Country	US
Kind code	A1
Filing date	Dec 29, 2023
Priority date	Jan 26, 2023
Publication date	Aug 1, 2024
Grant date	—

Abstract

A power conversion system incorporated in a flight vehicle includes a power converter having a semiconductor element stored therein. An energy storage is disposed above the power converter in the vertical direction, the energy storage storing a solid or liquid energy source containing a neutron attenuating material. The power converter is provided with a movable mechanism that moves to shift in position according to a tilt of the flight vehicle. The movable mechanism includes slider rails and a slider movable unit.

First claim

What is claimed is:

1 . A power conversion system incorporated in a flight vehicle, the power conversion system comprising a module having a semiconductor element stored therein, wherein
an energy storage is disposed above the module in a vertical direction, the energy storage storing a solid or liquid energy source containing a neutron attenuating material.

2 . The power conversion system according to claim 1 , wherein at least either the module or the energy storage is provided with a movable mechanism that moves to shift in position according to a tilt of the flight vehicle.

3 . The power conversion system according to claim 1 , wherein a shock-absorber is disposed between the energy storage and the module.

4 . The power conversion system according to claim 3 , wherein the shock-absorber has a ventilation function.

5 . The power conversion system according to claim 1 , comprising an adjustment mechanism that adjusts a barycenter of the energy storage.

6 . The power conversion system according to claim 5 , wherein the adjustment mechanism causes the energy storage to tilt at various angles.

7 . The power conversion system according to claim 1 , wherein a neutron attenuating material reduces intensity of neutrons carrying energy (1 MeV<E<20 MeV).

8 . The power conversion system according to claim 1 , wherein the energy storage is provided as at least one of a lithium ion battery, a fuel tank, and a fuel cell.

9 . The power conversion system according to claim 1 , wherein the semiconductor element is disposed such that a plane thereof with a largest area is parallel to a vertical direction.

10 . A flight vehicle comprising:
a main body; a propulsion device that generates a propulsive force for allowing the main body to fly; and the power conversion system incorporated in the main body, the power conversion system being set forth in claim 1 .

Assignees

• Hitachi Ltd

Inventors

• Gao Hangxian
• Kamizuma Hiroshi

Classifications

• B64D27/35 Primary

  Arrangements for on-board electric energy production, distribution, recovery or storage · CPC title

• B64D27/355

  using fuel cells · CPC title

• B64D27/357

  using batteries · CPC title

• B64D27/02 Primary

  Aircraft characterised by the type or position of power plants · CPC title

• H02M7/537

  using semiconductor devices only, e.g. single switched pulse inverters · CPC title