Comprehensive Analysis and Design of LLC Resonant Converter With Magnetic Control

Wei, Yuqi; Luo, Quanming; Mantooth, Alan

doi:10.24295/cpsstpea.2019.00025

Cited by 53 publications

(9 citation statements)

References 21 publications

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“…To show the superiority of the proposed DCT, the maximum efficiency, control complexity to ensure the desired M, and cost are compared with existing converters, as summarized in Table 2. It can be seen that by comparing with the converters in References 7,12,24,27‐33, the proposed DCT can ensure the highest efficiency while guaranteeing the simple control and low cost.…”

Section: Methodsmentioning

confidence: 97%

Robust and low‐cost design of LLC‐type DC transformer in hybrid AC / DC nano‐grids to improve energy conversion ability

Sun

Tong

Huang

et al. 2021

Int Trans Electr Energ Syst

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In the hybrid AC/DC nano‐grid, the LLC‐type DC transformer (DCT) is widely utilized in the DC and AC bus connection system (BCS) with high frequency to improve the system power density. However, it always employs the simple open‐loop scheme for not increasing the control complexity of the nano‐grid system, which creates a big challenge on the inherent features of the DCT circuit for the energy efficiency and conversion ability. Therefore, a robust and low‐cost design approach of the LLC‐type DCT is put forward in this paper based on the specific requirements of hybrid AC/DC nano‐grid. First of all, the design challenges of the LLC‐type DCT are discussed by analyzing the functions of BCS in nano‐grid application. Then, the detailed parameter design approach is presented step‐by‐step to meet the energy efficiency and conversion requirements in the full power range. Finally, a 6 kW nano‐grid prototype is established to verify the effectiveness of the proposed design method. The results show that the designed DCT can enjoy good energy efficiency and conversion ability with simple control and hence accommodate the high‐frequency nano‐grid application.

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Section: Methodsmentioning

confidence: 97%

Robust and low‐cost design of LLC‐type DC transformer in hybrid AC / DC nano‐grids to improve energy conversion ability

Sun

Tong

Huang

et al. 2021

Int Trans Electr Energ Syst

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“…As aforementioned, decreasing output voltage ripple and switching noise of the power supplies improve phase stability of the magnetron These requirements can be met by increasing switching frequency of the power supplies and applying an output low pass filter (LPF). In this paper, resonant converter widely used in high frequency applications due to zero voltage switching (ZVS) characteristic, is adapted [40]- [42]. Reduced switching losses enable power supplies to operate at high switching frequency and to decrease switching noise.…”

Section: Design and Implementation Of Power Suppliesmentioning

confidence: 99%

Suppression of a Long-Term Instability of a Commercial Magnetron With Low-Ripple DC Power Supply for Heater

Kim

Jang

et al. 2022

IEEE Access

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Compact but powerful and efficient magnetrons are in service for various high-power microwave applications owing to their additional superiority of low-cost mass production. However, the magnetron's inherent instability in frequency and phase over a relatively wide spectrum limits the versatile availability of the magnetron for possible advanced applications, including a long-distance wireless power transfer system (WPTS) that employs the magnetron as a unit source of a phased array system. The authors present a methodology suppressing a long-term instability of the S-band commercial magnetron harnessed by the phase-locking-loop (PLL) injection controlling and fixing the phase and frequency of the magnetron to the extent of the precision for a WPTS. The long-term drift of the phase exactly replicating the anode voltage fluctuations is successfully suppressed by the implementation of a DC power supply to compensate the cooling effects of the heater, which contributes to extreme stabilization of the phase (peak to peak 0.2 • ) for high-power (1kW). And eligibility for the unit source of a phase-arrayed WPTS is proven by varying the output power while maintaining the phase at a constant.INDEX TERMS Magnetrons, noise, phase-locking-loop (PLL), series parallel resonant converter (SPRC), cooling effect.

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“…Main difference between LLC and CLLC [36] topology is an expansion of resonant tank up to four or more elements involved to resonance what is shown on Fig. 4.…”

Section: Cllc Dual Bridge-series-parallel Convertersmentioning

confidence: 99%

Przegląd Obecnie Wykorzystywanych Izolowanych Przetwornic Prądu Stałego

Dobrzański

2021

IAPGOS

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W artykule przedstawiono przegląd najpopularniejszych topologii izolowanych przetwornic prądu stałego. Zaprezentowane rozwiązaniapodzielone zostały na dwie główne grupy. Pierwsza- jednokierunkowe izolowane przetwornice prądu stałego pozwalające na osiągnięcie miękkiejkomutacji, druga- dwukierunkowe izolowane przetwornice prądu stałego osiągające posiadające możliwość pracy w trybie miękkiego przełączania.Zebrane wyniki badań, symulacji oraz testów poszczególnych rozwiązań przeprowadzanych przy odmiennych założeniach pozwoliły na opracowaniepodsumowania. Sformułowane wnioski mogą definiować kierunek rozwoju przetwornic rezonansowych oraz swoisty punkt wyjścia do dalszych badań nadalgorytmami sterowania jak i poprawą efektywności przetwornic prądu stałego.

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Comprehensive Analysis and Design of LLC Resonant Converter With Magnetic Control

Cited by 53 publications

References 21 publications

Robust and low‐cost design of LLC‐type DC transformer in hybrid AC / DC nano‐grids to improve energy conversion ability

Robust and low‐cost design of LLC‐type DC transformer in hybrid AC / DC nano‐grids to improve energy conversion ability

Suppression of a Long-Term Instability of a Commercial Magnetron With Low-Ripple DC Power Supply for Heater

Przegląd Obecnie Wykorzystywanych Izolowanych Przetwornic Prądu Stałego

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