Mppt control device, method and apparatus for satellite electric propulsion system

By generating and limiting the reference voltage signal, and combining it with sampling and comparison circuits, the operating point of the solar cells is adjusted in real time, solving the energy imbalance problem in the Hall electric propulsion system. This achieves maximum energy utilization and stable control of the bus voltage, ensuring the high reliability and stability of the satellite power system.

CN114977462BActive Publication Date: 2026-07-03SHANGHAI INST OF SPACE POWER SOURCES
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Patent Information

Application Number
CN202210755005.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-06-29
Publication Date
2026-07-03
Estimated Expiration
2042-06-29

AI Technical Summary

Technical Problem

The existing MPPT technology of Hall electric propulsion systems has difficulty achieving energy balance during the illumination period, the shadow period, and the entire lifespan, resulting in unstable output voltage of the solar array, which may damage the downstream power controller and lead to low system efficiency.

Method used

By employing an MPPT control device and method, a reference voltage signal is generated and limited, and combined with sampling and comparison circuits, the operating point of the solar cell is adjusted in real time to achieve maximum energy utilization and stable control of the bus voltage.

Benefits of technology

It achieves energy balance of the satellite electric propulsion system during the sunshine period, the shadow period and the entire lifespan, ensures that the bus voltage is within a certain range, and guarantees the high reliability and stable operation of the satellite power system.

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Abstract

The application discloses an MPPT control device, method and equipment applied to a satellite electric propulsion system, the MPPT control device comprising an MPPT reference voltage generating circuit and an MPPT algorithm basic circuit, the MPPT reference voltage generating circuit is used for generating a first reference voltage signal for controlling a solar cell operating point; the MPPT algorithm basic circuit is connected with the MPTT reference voltage generating circuit and a main circuit in the satellite electric propulsion system, the MPPT algorithm basic circuit is used for collecting an output voltage signal and an output current signal of the main circuit, and generating a control signal according to a second reference voltage signal after amplitude limiting processing of the first reference voltage signal, the output voltage signal and the output current signal, so as to control the MPPT reference voltage generating circuit through the control signal. The application can realize energy balance of the satellite electric propulsion system in an illumination period, a shadow period and the whole life period, realize maximum energy utilization, maintain bus voltage in a certain range, and guarantee high reliability and stable operation of the satellite power supply system.
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