Hall thruster power supply device and control method of hall thruster power supply device

Patent metadata

Field	Value
Publication number	US-11652397-B2
Application number	US-201616328003-A
Country	US
Kind code	B2
Filing date	Oct 12, 2016
Priority date	Oct 12, 2016
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

A time average peak value of low frequency magnetic noise or low frequency conductive noise generated from a power supply device which drives a Hall thruster is suppressed without mass of a satellite significantly increased. A pulse width control circuit ( 22 ) of a Hall thruster power supply device ( 10 ) outputs a spread signal ( 58 ) obtained by performing spread spectrum on a pulse signal based on a control signal ( 54 ). A voltage output circuit ( 21 ) outputs output voltage ( 52 ) to a Hall thruster ( 50 ) in accordance with the spread signal ( 58 ) output by the pulse width control circuit ( 22 ).

First claim

The invention claimed is:

1. A Hall thruster power supply device comprising:
a spread circuit configured to output a spread signal obtained by performing spread spectrum on a pulse width signal based on a control signal; and
a voltage output circuit configured to output an output voltage to a Hall thruster in accordance with the spread signal output by the spread circuit,
wherein the pulse width signal is proportional to a comparison signal determined based on a difference between the control signal and the output voltage.

2. A Hall thruster power supply device comprising:
a spread circuit configured to output a spread signal obtained by performing spread spectrum on a pulse signal based on a control signal; and
a voltage output circuit configured to output an output voltage to a Hall thruster in accordance with the spread signal output by the spread circuit,
wherein the spread circuit outputs the spread signal depending on a magnetic field signal which controls a magnetic field of the Hall thruster.

3. The Hall thruster power supply device according to claim 2 , wherein the spread circuit outputs the spread signal which increases the output voltage as the magnetic field controlled by the magnetic field signal increases in strength.

4. The Hall thruster power supply device according to claim 1 ,
wherein the spread circuit outputs the spread signal modulated in a range between ±10% and ±50% of a basic switching frequency.

5. The Hall thruster power supply device according to claim 2 ,
wherein the spread circuit outputs the spread signal modulated in a range between ±10% and ±50% of a basic switching frequency.

6. The Hall thruster power supply device according to claim 3 ,
wherein the spread circuit outputs the spread signal modulated in a range between ±10% and ±50% of a basic switching frequency.

7. The Hall thruster power supply device according to claim 1 , wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of switching frequencies for each reference time among one or more reference times.

8. The Hall thruster power supply device according to claim 2 , wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of switching frequencies for each reference time among one or more reference times.

9. The Hall thruster power supply device according to claim 3 , wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of switching frequencies for each reference time among one or more reference times.

10. The Hall thruster power supply device according to claim 4 , wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of switching frequencies for each reference time among one or more reference times.

11. The Hall thruster power supply device according to claim 5 , wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of switching frequencies for each reference time among one or more reference times.

12. The Hall thruster power supply device according to claim 6 , wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of switching frequencies for each reference time among one or more reference times.

13. The Hall thruster power supply device according to claim 1 , wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of duty ratios for each reference time among one or more reference times.

14. The Hall thruster power supply device according to claim 2 , wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of duty ratios for each reference time among one or more reference times.

15. The Hall thruster power supply device according to claim 3 , wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of duty ratios for each reference time among one or more reference times.

16. The Hall thruster power supply device according to claim 4 , wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of duty ratios for each reference time among one or more reference times.

17. The Hall thruster power supply device according to claim 5 , wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of duty ratios for each reference time among one or more reference times.

18. The Hall thruster power supply device according to claim 6 , wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of duty ratios for each reference time among one or more reference times.

19. A control method of a Hall thruster power supply device comprising:
outputting a spread signal obtained by performing spread spectrum on a pulse width signal in accordance with a control signal; and
outputting an output voltage to a Hall thruster in accordance with the spread signal,
wherein the pulse width signal is proportional to a comparison signal determined based on a difference between the control signal and the output voltage.

Assignees

• Mitsubishi Electric Corp

Inventors

• Osuga Hiroyuki
• Hidaka Takayuki
• Miyamoto Takashi

Classifications

• F03H1/0018

  Arrangements or adaptations of power supply systems (for cosmonautic vehicles B64G1/42) · CPC title

• H02M1/08 Primary

  Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters · CPC title

• F03H1/0081

  Electromagnetic plasma thrusters · CPC title

• F03H1/0062 Primary

  grid-less with an applied magnetic field · CPC title