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A Secondary Power Supply with High Conversion Efficiency for Satellite

A secondary power supply, high conversion technology, applied in emergency power supply arrangement, output power conversion device, conversion of DC power input to DC power output, etc., can solve the problems of less components, increased cost, redundant design, etc. The effect of weight, increased safety, and reduced self-loss

Active Publication Date: 2022-04-08
AEROSPACE DONGFANGHONG SATELLITE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the secondary power conversion for commercial micro-nano satellites has begun to use non-isolated converters built with commercial devices. However, because the devices have less experience in orbit, quality assurance screening will greatly increase the cost, and the concentration of micro-nano satellites Power supply mode, one secondary power supply output supplies power to multiple devices, which requires higher reliability, so its redundant design becomes particularly important

Method used

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  • A Secondary Power Supply with High Conversion Efficiency for Satellite
  • A Secondary Power Supply with High Conversion Efficiency for Satellite
  • A Secondary Power Supply with High Conversion Efficiency for Satellite

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] The basic idea of ​​the present invention is: use commercial TPS54 series integrated circuits and other peripheral devices to build a non-isolated secondary power converter, and realize input undervoltage protection and input delay through the enable control terminal (EN pin) of TPS54 series integrated circuits. The main power supply and the backup power supply are designed with warm backup redundancy, the main backup power supply is connected in parallel with ideal diode isolation, the ideal diode controller for the main power supply is LTC4359, and the ideal diode controller for the backup power supply is LTC4364- 2. Both can realize output overvoltage protection, and at the same time eliminate the transient lower limit of output voltage when switching between active and standby; when used for centralized power supply of micro-nano satellites, a 3-red...

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Abstract

A high-conversion-efficiency secondary power supply for satellites uses commercial TPS54 series integrated circuits and other peripheral devices to build a non-isolated secondary power converter, which improves integration, reduces weight, and reduces costs; the main power supply is used It has a redundant design of warm backup with the backup power supply. The main backup is connected in parallel with an ideal diode for isolation, which reduces the self-loss of the secondary power supply and improves the conversion efficiency. When used for centralized power supply of micro-nano satellite platform equipment, the three-redundant design of 1 main and 2 backup is adopted to improve reliability; input under-voltage and delay circuits, and output over-voltage protection circuit are designed to increase the safety of equipment use. .

Description

technical field [0001] The invention relates to a high-efficiency non-isolated secondary power supply for satellites. Background technique [0002] According to the size of the satellite and the power level of electricity consumption, there are two types of power distribution methods for satellites: centralized power distribution and decentralized power distribution. Decentralized power distribution means that the primary bus of the satellite is distributed to each subsystem, and each subsystem or each stand-alone device will convert it to its own required voltage; centralized power supply means that the satellite power supply and distribution system will uniformly change the voltage to provide large Different secondary supply voltages required by most devices. [0003] The platform part of the micro-nano satellite usually adopts a centralized power supply method, that is, the +12V power consumption equipment and the +5V power consumption equipment of the platform part (usu...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/158H02M1/32H02J9/06
CPCH02M3/158H02M1/32H02J9/061Y04S20/20Y02B70/30
Inventor 张勇黄涛彭健颉萌周萌
Owner AEROSPACE DONGFANGHONG SATELLITE