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Micro-cathode arc propulsion system

A cathodic arc and propulsion system technology, which is applied in the field of satellite micro-propulsion, can solve problems such as increased thruster input power, high power consumption of PPU circuit, unstable thruster operation, etc., to reduce additional power consumption and improve work stability , the effect of stable

Active Publication Date: 2020-06-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the process of voltage back pressure, because the inductance has the characteristics of unstable discharge, the instability of back pressure will directly affect the instability of thruster operation
In addition, due to the back pressure characteristics of the inductor and the layout of the circuit, the power consumption of the PPU circuit will be large, resulting in an increase in the input power of the thruster and a decrease in the overall efficiency

Method used

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Embodiment 1

[0030] figure 2 It is a circuit diagram of the micro-cathode arc propulsion system in the embodiment of the present invention. Such as figure 2 As shown, the micro-cathode arc propulsion system provided by the present invention includes: a power supply, a resistor, a capacitor, a permanent magnet, an IGBT module and a micro-cathode arc thruster; the positive pole of the power supply is connected to one end of the resistor, and the other end of the resistor is respectively connected to one end of the IGBT module and one end of the capacitor Connection, the other end of the IGBT module is connected to the anode of the micro-cathode arc thruster, the cathode of the micro-cathode arc thruster, the other end of the capacitor is connected to the negative pole of the power supply, and the cathode of the micro-cathode arc thruster, the other end of the capacitor and the negative pole of the power supply are all grounded. The IGBT module includes: a pulse generator and an IGBT; the ...

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Abstract

The invention discloses a micro-cathode electric arc propelling system. An inductance circuit in a traditional micro-cathode arc propulsion system is replaced with the capacitance circuit, due to thefact that the capacitance discharging mode is stable, the working stability of the micro-cathode arc thruster can be improved, and due to the fact that the internal resistance of a capacitor is smallin the working process, extra power consumption of the circuit is reduced, and the efficiency of the system is improved. In addition, due to the fact that the pulse power supply is adopted, power is supplied in a pulse mode, and the average input power of the micro-cathode arc thruster is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of satellite micro-propulsion, in particular to a micro-cathode arc propulsion system. Background technique [0002] The microcathode arc thruster has become an ideal electric propulsion type for micro-nano-satellites due to its advantages of micro-power, high efficiency, high specific impulse, wide-range controllability, and low cost. It can be applied to the orbit maintenance and formation of micro-nano-satellites missions such as flying. Traditional micro-cathode arc propulsion system circuit such as figure 1 As shown, the function of the power processing unit (PPU) is to provide a pulse voltage of hundreds of volts for the thruster. The PPU includes an inductor, a pulse generator, an IGBT and a resistor. Its working principle is: it uses inductive energy storage and is powered by a 20V DC power , The charging and discharging of the inductor is controlled by an insulated gate bipolar transistor (IGBT). ...

Claims

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Application Information

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IPC IPC(8): B64G1/40
CPCB64G1/40B64G1/415B64G1/428H05H1/54F03H1/0018F03H1/0087H05H1/4652
Inventor 魏立秋丁永杰李鸿纪添源吴凡于达仁
Owner HARBIN INST OF TECH
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