CN-122026295-A - Power supply method and power supply system for space calculation force center

CN122026295ACN 122026295 ACN122026295 ACN 122026295ACN-122026295-A

Abstract

The invention relates to the technical field of space power supply, in particular to a power supply method and a power supply system for a space computing force center, wherein the power supply method for the space computing force center comprises the following steps of receiving solar radiation energy; and controlling a power supply system for the space computation center to switch to a target power supply mode matched with the current operation working condition according to the bus voltage value and the sunlight state identifier so as to execute a power supply strategy corresponding to the target power supply mode. The invention ensures the stable voltage value of the bus and the stable and efficient operation of the space calculation center, and improves the energy utilization rate.

Inventors

WU MINGYANG
WANG CAIYUN
Ning Haoxuan

Assignees

沈阳微控飞轮技术股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260415

Claims (10)

1. A power supply method for a space computation center, characterized by being applied to a power supply system for a space computation center, the power supply system for a space computation center comprising a solar photovoltaic unit, a flywheel energy storage unit and a load unit, the power supply method comprising: Receiving solar radiation energy; obtaining a bus voltage value of a direct current bus, and determining a sunlight state identifier according to the solar radiation energy; And controlling the power supply system for the space calculation center to switch to a target power supply mode matched with the current operation working condition according to the bus voltage value and the sunlight state identifier so as to execute a power supply strategy corresponding to the target power supply mode.
2. The power supply method for a space abating center according to claim 1, characterized in that when controlling the power supply system for a space abating center to switch to a target power supply mode matched with a current operation condition according to the busbar voltage value and the solar state identification to execute a power supply strategy corresponding to the target power supply mode, comprising: When the sunlight state identifier is a first sunlight state identifier and the bus voltage value is in a preset voltage normal interval, controlling the power supply system for the space calculation force center to switch to a light period voltage-stabilizing power supply mode so as to execute a first power supply strategy, wherein the lower limit value of the preset voltage normal interval is a preset negative deviation threshold value, and the upper limit value of the preset voltage normal interval is a preset positive deviation threshold value; And when the sunlight state identifier is the first sunlight state identifier and the bus voltage value is smaller than the preset negative deviation threshold or larger than the preset positive deviation threshold, controlling the power supply system for the space calculation center to switch to a transient power supply mode in the illumination period so as to execute a second power supply strategy.
3. The power supply method for a space abating center according to claim 1, characterized in that when controlling the power supply system for a space abating center to switch to a target power supply mode matched with a current operation condition according to the busbar voltage value and the solar state identification to execute a power supply strategy corresponding to the target power supply mode, further comprising: when the sunlight state identifier is a second sunlight state identifier and the busbar voltage value is in a preset voltage normal interval, controlling the power supply system for the space calculation force center to switch to a shadow period steady-state power supply mode so as to execute a third power supply strategy; And when the sunshine state identifier is the second sunshine state identifier and the busbar voltage value is smaller than a preset negative deviation threshold value, controlling the power supply system for the space calculation force center to switch to a shadow period load limiting power supply mode so as to execute a fourth power supply strategy.
4. The power supply method for a space computation center according to claim 2, characterized by comprising, when executing the first power supply strategy: And controlling the solar photovoltaic unit to provide electric energy for the load unit, and transmitting the residual electric energy meeting the electricity consumption requirement of the load unit to the flywheel energy storage unit for charging.
5. The power supply method for a space computation center according to claim 2, characterized by comprising, when executing the second power supply strategy: When the bus voltage value is smaller than the preset negative deviation threshold value, controlling the flywheel energy storage unit to switch to a discharging mode to release electric energy so as to compensate the power supply shortage of the solar photovoltaic unit to the load unit, thereby meeting the power consumption requirement of the load unit; And when the bus voltage value is larger than the preset forward deviation threshold value, controlling the flywheel energy storage unit to switch to a charging mode so as to absorb the residual electric energy of the solar photovoltaic unit after the electricity consumption requirement of the load unit is met.
6. A power supply method for a space computation center according to claim 3, characterized in that when executing the third power supply strategy, it comprises: and controlling the solar photovoltaic unit to stop outputting electric energy, and controlling the flywheel energy storage unit to switch to a discharging mode so as to release electric energy to meet the electricity consumption requirement of the load unit.
7. A power supply method for a space computation center according to claim 3, wherein the load units include a first load unit and a second load unit, the first load unit having a higher priority of electricity than the second load unit, and when executing a fourth power supply strategy, comprising: Determining a load shedding power required by the second load unit; And sending a load shedding control instruction to the second load unit according to the load shedding power so as to control the second load unit to execute load shedding operation and keep normal power supply to the first load unit.
8. The method of supplying power for a space computation center of claim 7, wherein when determining the derating power required by the second load unit, comprising: Acquiring the current running power of the first load unit, the current running power of the second load unit, the state of charge of the flywheel energy storage unit and the expected shadow duration, wherein the expected shadow duration is determined based on the time interval from entering the second sunlight state identifier to being converted into the first sunlight state identifier when the space computation force center is in the current track running period; And determining the load shedding power by using a preset load shedding strategy according to the current running power of the first load unit, the current running power of the second load unit, the charge state and the expected shadow duration.
9. The method of power supply for a space mental center according to claim 8, wherein when determining a solar state identification from the solar radiation energy, comprising: When the solar radiation energy is greater than or equal to a preset energy threshold, generating the first sunlight state identifier for representing that the space abacus is in the illumination period in the current orbit operation period; and when the solar radiation energy is smaller than the preset energy threshold value, generating the second sunlight state identification used for representing that the space computation force center is in a shadow period in the current orbit operation period.
10. A power supply system for a space computation center, comprising: the solar photovoltaic unit is used for receiving solar radiation energy and converting the solar radiation energy into electric energy; The flywheel energy storage unit is used for realizing energy storage and release through the mutual conversion of kinetic energy and electric energy; the load unit is used for maintaining the operation of the space calculation force center; The solar photovoltaic unit, the flywheel energy storage unit and the load unit are all connected in parallel to a direct current bus; the power management control unit is respectively connected with the solar photovoltaic unit, the flywheel energy storage unit and the load unit, and is used for acquiring a bus voltage value of the direct current bus and determining a sunlight state identifier according to the solar radiation energy; And controlling the power supply system for the space calculation center to switch to a target power supply mode matched with the current operation working condition according to the bus voltage value and the sunlight state identifier so as to execute a power supply strategy corresponding to the target power supply mode.

Description

Power supply method and power supply system for space calculation force center Technical Field The invention relates to the technical field of space power supply, in particular to a power supply method and a power supply system for a space calculation force center. Background Driven by the explosive growth of large models of global AI (ARTIFICIAL INTELLIGENCE ), ground data centers face increasingly severe power gaps and heat dissipation bottlenecks, and a new model of 'space calculation' for deploying high calculation force nodes in orbiting satellites is generated. Compared with the traditional ground data center, the space calculation has the subversion advantages of high deployment efficiency, high energy utilization rate, low comprehensive cost and the like. In addition, flywheel energy storage is used as a power type energy storage technology, has the characteristics of high power density, million secondary cycle life, no maintenance, no chemical safety risk and the like, and the requirements of radiation heat dissipation and high-vacuum operation are perfectly matched with the space operation environment. However, current space powered systems primarily harvest energy through photovoltaics and utilize chemical batteries to store excess electrical energy to address the power requirements of track shading periods. Although the mode guarantees basic power supply to a certain extent, when facing the special long service life, high safety and dynamic load demands of space computing centers, the mode still has the defects that firstly, the chemical battery has fast performance attenuation under the extreme temperature change of space (about 100K-400K), the cycle life is only about 5 years, the hidden danger of thermal runaway is extremely large in a closed cabin, secondly, the chemical battery belongs to energy storage, the low orbit satellite 'long sunlight and short shadow' characteristics are difficult to adapt, the system is increased in redundancy, the response speed is low, the instantaneous impact of AI load cannot be met, voltage fluctuation is easily caused, and the space vacuum low-temperature environment advantage and high sunlight resource are not fully utilized, so that the energy utilization efficiency is low. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one purpose of the invention is to provide a power supply method for the space calculation center, which not only ensures the stability of the busbar voltage value, adapts to different sunlight conditions and load fluctuation scenes, but also fully utilizes the orbit characteristics of the orbit satellite, namely the high sunlight duty ratio and the short shadow duration, to optimize the energy configuration, effectively reduces the weight of a power supply system for the space calculation center and the rocket launching cost, simultaneously fully utilizes the space low-temperature environment to realize the natural cooling of a flywheel energy storage unit, eliminates the dependence on a vacuum pump by virtue of the space vacuum environment, thereby ensuring the stable and efficient operation of the space calculation center in the complex space environment, and remarkably improving the energy utilization rate. To this end, a second object of the invention is to propose a power supply system for a space mental centre. In order to achieve the aim, a first aspect of the invention discloses a power supply method for a space computation center, which is suitable for a power supply system for the space computation center according to a second aspect of the invention, and comprises the steps of receiving solar radiation energy, obtaining a busbar voltage value of a direct current busbar, determining a sunlight state identifier according to the solar radiation energy, and controlling the power supply system for the space computation center to switch to a target power supply mode matched with the current operation working condition according to the busbar voltage value and the sunlight state identifier so as to execute a power supply strategy corresponding to the target power supply mode. Further, when the power supply system for the space calculation center is controlled to be switched to a target power supply mode matched with the current operation working condition according to the bus voltage value and the sunlight state identification to execute a power supply strategy corresponding to the target power supply mode, the method comprises the steps of controlling the power supply system for the space calculation center to be switched to a light period voltage stabilizing power supply mode to execute a first power supply strategy when the sunlight state identification is a first sunlight state identification and the bus voltage value is in a preset voltage normal interval, wherein the lower limit value of the preset voltage normal interval is a preset negativ