High-power spacecraft power supply system based on solar cell array maximum power point tracking technology
A technology of solar cell array and maximum power point, which is applied to control/regulate systems, instruments, and electrical variables to improve system stability, facilitate system control, and enhance system reliability.
Active Publication Date: 2021-12-14
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology
At present, there is no application of spacecraft high-power power supply system based on MPPT technology in China. This invention proposes a high-power spacecraft power supply system based on analog high-reliability MPPT technology, which solves the problem of building a high-reliability, high-power system based on MPPT technology. Issues of Safety, Scalability and High Adaptability of Spacecraft Power System
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[0014] Such as figure 1 Shown is the topological circuit diagram of the power supply system of the present invention. The present invention proposes a spacecraft power supply system based on MPPT technology, which realizes the reliable and safe establishment of the initial working state of the MPPT power supply system, facilitates flexible test applications in various working modes, and realizes Self-management of charge and discharge of battery packs, adopting hierarchical control and adjustment methods, enhances the reliability and safety of the system, facilitates the expansion of system power capacity, and enhances the adaptability of the system. The system has the ability to track the maximum working point of the solar cell array, and can adapt to temperature and light The situation where the intensity varies in a wide range satisfies the needs of deep space exploration missions represented by Mars exploration.
[0015] Concrete realization of the present invention mainly...
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The invention discloses a high-power spacecraft power supply system based on a solar cell array maximum power point tracking technology. The power supply system realizes comprehensive control of MPPT (Maximum Power Point Tracking) and SR (Shunting Regulation), real-time tracking of a maximum power point output by a solar cell array, autonomous charging management of a lithium ion storage battery pack, reliable and safe establishment of a primary bus, autonomous fault isolation and the like. The system comprises a plurality of MPPT power regulation modules, a lithium ion storage battery pack, one or more SR power regulation modules, one or more solar cell arrays and the like. The power supply system has the characteristics of high solar cell array utilization rate, autonomous charging management of the lithium ion storage battery pack, easy system power expansion, high bus quality, flexible power-up and high reliability, and is especially suitable for deep space exploration aerospace application occasions with large environment temperature change and high system specific energy requirements.
Description
technical field [0001] The invention relates to a spacecraft power supply system, in particular to a high-power-density and high-power spacecraft power supply system based on solar battery array maximum power point tracking (MPPT) technology, belonging to the field of spacecraft power supply systems. Background technique [0002] With the development of space missions, deep space exploration has become an important part of space missions. Deep space exploration missions represented by Mars exploration and asteroid exploration put forward higher requirements for spacecraft power systems. Due to the limitations of volume and weight , the power system of deep space exploration spacecraft has higher specific power requirements, and it must provide greater power under the constraints of smaller solar cell array area, smaller volume and mass, and make the weight of the power system account for the proportion of the entire star. From 30 to 40% of traditional earth orbit satellites ...
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IPC IPC(8): G05F1/67
CPCG05F1/67
Inventor 石海平刘治钢陈燕汪静穆浩朱立颖马亮井元良孟洋洋
Owner BEIJING INST OF SPACECRAFT SYST ENG