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- W2783221321 abstract "In a dc pulsed power supply (PPS), its instantaneous output power is pulsed, and its input power is required to be constant. In order to balance the instantaneous power difference, a storage capacitor is usually connected to the output terminal of the PPS. However, the storage capacitor is extremely large when the pulse repetition frequency (PRF) is relatively low. In this paper, an active capacitor converter (ACC) is adopted in place of the storage capacitor. In the ACC, the storage capacitor is greatly reduced by intentionally increasing its voltage ripple. To improve the tracking ability of the terminal current of the ACC, a current reference feedforward control scheme is proposed, and it is further simplified for avoiding the use of the reciprocal and square root circuits. In order to improve the dynamic response of the PPS when the pulsed load is triggered on and terminated, several methods are proposed. The methods of imposing a negative dc bias on the current reference and peak voltage control for the ACC storage capacitor are aiming for reducing the undershoot and overshoot of the output voltage, and two fast voltage loops are incorporated for limiting the maximum and minimum voltage of the storage capacitor in the ACC. Finally, a prototype with the output peak power of 2 kW, the output average power of 300 W, and the PRF of 150–300 Hz is fabricated and tested to verify the validity of the proposed PPS and control schemes." @default.
- W2783221321 created "2018-01-26" @default.
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- W2783221321 date "2018-11-01" @default.
- W2783221321 modified "2023-09-29" @default.
- W2783221321 title "A Pulsed Power Supply Adopting Active Capacitor Converter for Low-Voltage and Low-Frequency Pulsed Loads" @default.
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- W2783221321 doi "https://doi.org/10.1109/tpel.2018.2793187" @default.
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