Wide-Output Range Power Processing Unit for 6-kW Hall Thruster

Matsunaga, Yoshio; Takahashi, Toru; Watanabe, Hiroki; Goto, Daisuke; Cho, Shinatora; Kusawake, Hiroaki; Kurokawa, Fujio; Kajiwara, Kazuhiro; Funaki, Ikkoh

doi:10.1109/taes.2021.3117520

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…Therefore, JAXA aims to increase both the thrust and Isp of this thruster to meet future needs [17,18]. JAXA has developed a new power supply unit, a "widerange" PPU, for a future 6 kW Hall thruster [19,20]. It has a variable output of 175 V to 800 V and 4 A to 34 A.…”

Section: Introductionmentioning

confidence: 99%

Control algorithm for a 6 kW hall thruster

et al. 2022

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This paper presents a control algorithm for ensuring the stable operation of a 6 kW Hall thruster. The Japan Aerospace Exploration Agency is developing a “wide-range” power processing unit (PPU) to power a 6 kW Hall thruster system, a candidate for all-electric satellites. The PPU provides discharge oscillation, power, and discharge current control. The increments in the control loop are fixed, so the PPU digital controller does not need to calculate them, and the algorithm’s computational complexity is minimal. Results of integration tests on the 6 kW Hall thruster and the PPU breadboard model showed that the three control functions run correctly. The total controlled PPU power was adjusted in the range of 3.45–3.55 kW under constant power control with a target of 3.5 kW. Oscillations of ± 0.05 kW around the target power are acceptable. 70% of the peaks in the discharge current acquired for 100 ms exceeded the limit of 1.5A. Discharge oscillation control varied the coil magnetic field and reduced them to 0%. The PPU successfully controlled the coil current, reducing the discharge current from 13.7 A to 13 A. The propulsion efficiency increased from 59% to 60.5%.

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Section: Introductionmentioning

confidence: 99%

Control algorithm for a 6 kW hall thruster

et al. 2022

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Amplitude detection system for 6 kW Hall thruster

Matsunaga,

Takahashi,

Watanabe

et al. 2023

Acta Astronautica

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Control Algorithm for 6 kW Hall Thruster

Matsunaga

Watanabe

Cho

et al. 2022

Preprint

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This paper presents a control algorithm for ensuring the stable operation of a 6 kW Hall thruster. The Japan Aerospace Exploration Agency is developing a “wide-range” power processing unit (PPU) to power a 6 kW Hall thruster system, a candidate for all-electric satellites. The PPU provides discharge oscillation, power, and discharge current control. The increments in the control loop are fixed, so the PPU digital controller does not need to calculate them, and the algorithm's computational complexity is minimal. Results of integration tests on the 6 kW Hall thruster and the PPU breadboard model showed that the three control functions run correctly. The total controlled PPU power was adjusted in the range of 3.45–3.55 kW under constant power control with a target of 3.5 kW. Oscillations of ±0.05 kW around the target power are acceptable. Discharge oscillation control decreased the number of 0.1 ms segments with amplitudes exceeding 1.5 A from 700 to 0 by changing the coil current. The PPU successfully controlled the coil current, reducing the discharge current from 13.7 A to 13 A. The propulsion efficiency increased from 59% to 60.5%.

show abstract

Wide-Output Range Power Processing Unit for 6-kW Hall Thruster

Cited by 3 publications

References 23 publications

Control algorithm for a 6 kW hall thruster

Control algorithm for a 6 kW hall thruster

Amplitude detection system for 6 kW Hall thruster

Control Algorithm for 6 kW Hall Thruster

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