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Voltage Regulation Control Method of Ion Thruster Screen Grid Power Supply
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Qian CUI, Jiemin ZHOU, Zhengdao DING, Jina QIN, Yiqing GAO, Pengchuan JIANG
Electric Drive | 2024, 54(3) : 38 - 45
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Electric Drive | 2024, 54(3): 38-45
Voltage Regulation Control Method of Ion Thruster Screen Grid Power Supply
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Qian CUI, Jiemin ZHOU, Zhengdao DING, Jina QIN, Yiqing GAO, Pengchuan JIANG
Affiliations
  • College of Civil Aviation，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，Jiangsu，China
Published: 2024-03-20 doi: 10.19457/j.1001-2095.dqcd24693
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In order to solve the problem of overvoltage and overcurrent in the process of load sudden change for ion thruster screen grid power supply， the phase shift pulse frequency modulation （PS-PFM） was used to stabilize the output voltage of the LLC resonant converter. When the sampling voltage is lower than the lower limit of the set value， it enters into the frequency control mode， and when the sampling voltage is higher than the upper limit of the set value， it enters into the phase shift control mode. The experiment proves that， compared with the common frequency control， the addition of phase shift control can solve the problem of high voltage drift in light load or no-load mode， and through the adjustment of PID parameters， it can achieve stable and fast adjustment when the load jumps， so that the output voltage remains at the set value. Through the PCB layout and magnetic components optimization design， the developed principle prototype efficiency reaches 98.9% under rated conditions， and the power density reaches 6.47 × 10 6   W / m 3， which is advantageous in the same level of power supply products.

ion thruster  /  screen grid power supply  /  phase shift pulse frequency modulation（PS-PFM）  /  full-bridge LLC resonant converter  /  load sudden change
Qian CUI, Jiemin ZHOU, Zhengdao DING, Jina QIN, Yiqing GAO, Pengchuan JIANG. Voltage Regulation Control Method of Ion Thruster Screen Grid Power Supply[J]. Electric Drive, 2024 , 54 (3) : 38 -45 . DOI: 10.19457/j.1001-2095.dqcd24693
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doi: 10.19457/j.1001-2095.dqcd24693
  • Receive Date：2022-10-19
  • Online Date：2025-12-12
  • Published：2024-03-20
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  • Received：2022-10-19
  • Revised：2022-12-02
Affiliations
    College of Civil Aviation，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，Jiangsu，China
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