Spacecraft system, information processing device, and information processing method

The spacecraft system addresses inefficiencies in space solar power generation by calculating and controlling the orbit and attitude of the satellite to align the sun, satellite, and receiving equipment, enhancing power transmission efficiency and reducing fuel consumption.

JP2026028441APending Publication Date: 2026-02-20HITACHI LTD +1
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Patent Information

Application Number
JP2024130859
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-08-07
Publication Date
2026-02-20

AI Technical Summary

Technical Problem

Existing space solar power generation systems face inefficiencies due to the Earth's axial tilt causing misalignment between the sun, satellite, and receiving equipment, necessitating significant adjustments to the phased array antenna, which reduces power transmission efficiency.

Method used

A spacecraft system that calculates and controls the orbit and attitude of a solar power generation satellite based on the angle between the sun, satellite, and receiving equipment, using an information processing device to determine an ideal orbit and attitude for maximizing power transmission efficiency.

Benefits of technology

Enables highly efficient power transmission by aligning the satellite and receiving equipment closer to a straight line, reducing energy loss and fuel consumption through precise orbit and attitude control.

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  • Figure 2026028441000001_ABST
    Figure 2026028441000001_ABST
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Abstract

To provide a spacecraft system for achieving highly efficient power transmission.SOLUTION: The system includes a photovoltaic power generation satellite having a solar panel that receives sunlight to obtain electric power, an electromagnetic wave transmission device that converts the electric power into an electromagnetic wave and transmits the electromagnetic wave, and a control device that controls a trajectory and an attitude control device and a transmission angle of the electromagnetic wave transmission device and is installed on a space side, and a ground facility 3 having a reception facility and an information processing device that receives the electromagnetic wave from the electromagnetic wave transmission device and converts the electromagnetic wave into electric power and is installed on a ground side. The information processing device calculates a sun-satellite-receiving facility angle formed by the sun and the receiving facility around the solar power generation satellite based on the position of the receiving facility, the orbit information of the solar power generation satellite, and the position of the sun, calculates the amount of power received by the receiving facility based on the position of the receiving facility, the attitude of the solar power generation satellite, the orbit information of the solar power generation satellite, and the position and the angle of the sun to calculate and output the orbit or the attitude of the solar power generation satellite, and controls the orbit or the attitude using the orbit and attitude control device.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

  • Power transmission beam direction controller

    JP2004032879A