Microsatellite energy system

Abstract

The invention discloses a microsatellite energy system which comprises a solar array, a charging management unit with MPPT (maximum power point tracking), a voltage transformation unit, a battery management unit and an electric storage unit. The charging management unit with the MPPT is connected with the solar array and is used for setting output voltage of the solar array to output maximum power; the voltage transformation unit is connected with the charging management unit with the MPPT and is used for converting the output voltage of the charging management unit with the MPPT into voltage needed by loads; the battery management is connected with the charging management unit with the MPPT and the electric storage unit respectively and is used for receiving the output voltage of the charging management unit with the MPPT and outputting the output voltage identical to the electric storage unit. The microsatellite energy system has the advantages of being simple in structure, low in energy consumption, controllable in charging and discharging and the like.

Description

technical field [0001] The invention mainly relates to the field of satellite technology, in particular to a micro-satellite energy system. Background technique [0002] The satellite power system is one of the key subsystems of the satellite, which provides energy support for other subsystems and payloads of the satellite. The power system generally has two parts: "power supply system" and "power distribution system". The power supply system part is composed of power generation system and power control equipment, while the power generation system is composed of main power supply and energy storage battery. The main power supply is the satellite's primary power generator, converting other forms of energy into electricity. The energy storage power supply is the only energy source in the shadow area of ​​the satellite, and it also provides energy when the satellite has a peak power demand. The power control equipment completes the adjustment of the output power of the solar...

AI Technical Summary

Problems solved by technology

At the same time, the bus voltage setting value is inconsistent with the maximum power point voltage value of the solar cell array, so the DET method cannot maximize the use of solar cell power

[0005] (2) The circuit structure of the common MPPT energy transmission method is complex, and the voltage conversion and tracking algorithm implementation circuits all have power consumption

However, both the converter circuit and the maximum power point algorithm implementation circuit have power consumption

[0006] In addition, in some energy systems, when the charging current is too large, the method of directly cutting off the charging circuit is adopted, which not only brings energy loss, but also uses a relatively complicated MPPT method, and there are losses in the converter circuit and the maximum power point algorithm implementation circuit.

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