Power on-off control method of direct-current voltage-stabilized power supplies for spacecraft
A DC stabilized power supply and control method technology, which is applied in the field of spacecraft testing, can solve the problems of limited output power of a single DC stabilized power supply and cannot be connected in parallel to supply power to it, and achieve the effect of avoiding current backflow and ensuring the input voltage of the load
Active Publication Date: 2013-07-31
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology
[0002] During spacecraft testing, due to the limited output power of a single DC regulated power supply, a single DC regulated power supply often cannot meet the test requirements of certain types of spacecraft. Therefore, it is necessary to use multiple DC regulated power supplies to centrally supply power to spacecraft A commonly used power supply method for spacecraft, the usual solution is to use multiple power supplies to supply power to the spacecraft at the same time, that is, the parallel connection method for power supply, but due to the special power supply requirements of the spacecraft, simple parallel connection cannot be used to supply power to it
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[0027] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0028] The invention provides a method for controlling the power on and off of a spacecraft by a DC stabilized power supply, comprising the following steps:
[0029] Step 1. Use N sets of DC regulated power supplies in parallel at both ends of the power input interface of the spacecraft. The specific method is:
[0030] Such as figure 1 As shown, the positive output terminals of N DC regulated power supplies are respectively connected to a power output switch and a diode and connected in parallel to the positive input terminal of the spacecraft, and the negative output terminals of N DC regulated power supplies are connected in parallel to the negative input terminal of the spacecraft;
[0031] A sampling switch is connected in series through a sampling line between the positive voltage sampling interfaces of N DC regulated power supplies and the positive...
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The invention discloses a power on-off control method of direct-current voltage-stabilized power supplies for a spacecraft. Sampling wires are connected with a load input end to obtain voltage of a load directly, so that the stabilization of load input voltage is ensured; the cathode sampling wires are powered on in advance; the stabilization of near-end voltage is ensured under the condition that the anode sampling wires are not powered on; voltage at a load end is approximately equal to a set voltage value; the on-off of the anode sampling wires of the direct-current voltage-stabilized power supplies is controlled independently; the anode sampling wires are not connected with each other under the condition that power wires are not powered on; power outputs of the direct-current voltage-stabilized power supplies are outputted in parallel after connected in series with diodes; current reverse among the power supplies is avoided; when load power is increased, the direct-current voltage-stabilized power supplies output power sequentially according to the magnitude of set voltage; the stabilization of the load input voltage is ensured; the direct-current voltage-stabilized power supplies work independently; a failure of any one power supply cannot lead to the failures of the other power supplies; and the other power supplies can output the power automatically to recover the power lost by the failed power supply.
Description
technical field [0001] The invention relates to the field of spacecraft testing, in particular to a method for controlling power on and off of a spacecraft by a DC stabilized power supply. Background technique [0002] During spacecraft testing, due to the limited output power of a single DC regulated power supply, a single DC regulated power supply often cannot meet the test requirements of certain types of spacecraft. Therefore, it is necessary to use multiple DC regulated power supplies to centrally supply power to spacecraft A commonly used power supply method for spacecraft, the usual solution is to use multiple power supplies to supply power to the spacecraft at the same time, that is, the parallel connection method for power supply. However, due to the special power supply requirements of the spacecraft, simple parallel connection cannot be used for power supply. Contents of the invention [0003] In view of this, the present invention provides a method for controll...
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IPC IPC(8): H02J1/10
Inventor 王少林宋世民胡勇王勇
Owner BEIJING INST OF SPACECRAFT SYST ENG