Spacecraft power system based on superconducting magnetic energy storage and control method

Abstract

The invention discloses a spacecraft power system based on superconducting magnetic energy storage and a control method. The spacecraft power system comprises a solar cell array, a power control unit, an energy bi-directional flowing converter, a logic and control unit, and a superconducting coil. The power control unit adjust output voltage of the solar cell array, to generate stable primary bus voltage. A variable acquisition and processing module in the logic and control unit acquires the primary bus voltage and processes the primary bus voltage. After processing, the logic and control unit performs logic determination on obtained variables, and a pulse generation, driving, and protection circuit module generates a corresponding pulse signal according to logic determination result. The pulse signal controls the energy bi-directional flowing converter. The energy bi-directional flowing converter is used to realize a primary bus charging the superconducting coil, the superconducting coil discharging to the primary bus, or a freewheeling function of the superconducting coil. The spacecraft power system solves problems that a conventional space power system cannot supply power for large power pulse loads.

Description

technical field [0001] The invention belongs to the technical field of spacecraft power supplies, and in particular relates to a spacecraft power supply system and a control method based on superconducting magnetic energy storage. Background technique [0002] With the rapid development of my country's aerospace industry and the intensification of the international space competition, more and more space high-power and pulse-type payloads are used. For example, the current space electric propulsion power demand reaches 20kW, and the longest single working time is 3mins ;A certain space-based radar mission proposes a pulsed power supply requirement of 30kW, with an operating frequency of about 20kHz; the future peak power requirement of a space electromagnetic launcher is expected to reach the order of 100kW, with a duration of about 20ms; The capacity, peak power and response speed requirements are higher. Take the space-borne or station-borne laser weapon system as an example,...

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Problems solved by technology

[0006] In view of this, the present invention provides a spacecraft power supply system and control method based on superconducting magnetic energy storage, which can solve the problem that traditional space power supply systems (solar battery power generation + power regulation + storage battery energy storage) are difficult to generate large power, pulse The problem of load power supply, and high energy storage efficiency, high power density, fast dynamic response, large discharge depth, and long cycle life can reduce the cost of space power supply systems

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