عنوان مقاله:

نویسندگان:

رضا تکرلی، محمدرضا ادیب، ابوالفضل واحدی، رضا بیرانوند

High voltage converters are commonly used in various applications, namely, PFC, HVDC, water treatment, and high-voltage dc power supplies. This paper proposes a high-voltage output DC-DC LLC resonant converter, which provides some good features such as soft switching leading to low electromagnetic interference, that can enable the opportunity to achieve higher efficiency and high-frequency operation to increase the converter power density. The resonant converters are characterized by the ability to control the output voltage through switching frequency modulation within a wide range of load changes and input voltage fluctuations while maintaining soft switching. The proposed LLC is fed by the input inverter with six switches, which halves the voltage stresses on the switches. Meanwhile, on the output rectifying stage, a symmetrical multiplier boosts the resonant tank voltage by four, which significantly improves the power density, as compared to the conventional Cockcroft-Walton and full bridge diode rectifiers. It also reduces the transformer turns ratio while the output impedance remains relatively unchanged. The given converter operational principles are discussed and mathematically analyzed in detail. To validate the proposed structure, it has been simulated using OrCAD/Capture under different conditions.

DC-DC power conversion, high voltage converter, LLC resonant converter, voltage multiplier, water treatment

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تکرلی، رضا، ادیب، محمدرضا، واحدی، ابوالفضل، بیرانوند، رضا، 1401، مبدل DC-DC ولتاژ بالا رزونانسی LLC بر پایه ی مدار چند برابر کننده ولتاژ، دومین کنفرانس بین المللی موتور ها و ژنراتورهای الکتریکی، https://cnf.hsu.ac.ir/fa/archive_index.php?c=icemg2023&aid=70971