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

Patent metadata

Field	Value
Publication number	US-2021261275-A1
Application number	US-201616328003-A
Country	US
Kind code	A1
Filing date	Oct 12, 2016
Priority date	Oct 12, 2016
Publication date	Aug 26, 2021
Grant date	—

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

1 . A Hall thruster power supply device comprising:
a spread circuit to output a spread signal obtained by performing spread spectrum on a pulse signal based on a control signal; and a voltage output circuit to output output voltage to a Hall thruster in accordance with the spread signal output by the spread circuit.

2 . The Hall thruster power supply device according to claim 1 ,
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 is stronger.

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 . (canceled)

6 . (canceled)

7 . (canceled)

8 . 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.

9 . 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.

10 . 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.

11 . 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.

12 . 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.

13 . 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.

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

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

16 . 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.

17 . 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.

18 . 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.

19 . 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.

20 . The Hall thruster power supply device according to claim 8 ,
wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of duty ratios for each reference time.

21 . The Hall thruster power supply device according to claim 9 ,
wherein the spread circuit outputs the spread signal obtained by sequentially switching a plurality of duty ratios for each reference time.

22 . A control method of a Hall thruster power supply device comprising:
outputting a spread signal obtained by performing spread spectrum on an on/off signal in accordance with a control signal; and outputting output voltage to a Hall thruster in accordance with the spread signal.

Assignees

• Mitsubishi Electric Corp

Inventors

• Osuga Hiroyuki
• Hidaka Takayuki
• Miyamoto Takashi

Classifications

• 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

• F03H1/0018

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

• F03H1/0062 Primary

  grid-less with an applied magnetic field · CPC title

• B64G1/42 Primary

  Arrangements or adaptations of power supply systems · CPC title