Design and Optimization of a Magnetron DC–DC Isolated Power Supply With High Efficiency

Zhang, Junkun; Gao, Bin; He, Zhixing; Wang, Lei; Hou, Renjie; Yang, Liu; Luo, An; Chen, Yandong; Han, Rong

doi:10.1109/tpel.2022.3155257

Cited by 10 publications

(1 citation statement)

References 36 publications

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“…However, high-efficiency phase locking still encounters some issues, and one of them is the problem of unsynchronized high-voltage power supplies, which has not been analyzed by anyone so far. In experiments, magnetrons are driven by the high-voltage pulses of power supplies [23][24][25]: If one power supply cannot provide sufficient current, then two or more power supplies are required. The repetition rate of the power supplies is usually above 1000 Hz.…”

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confidence: 99%

Particle-in-Cell Simulations on High-Efficiency Phase-Locking Millimeter-Wave Magnetrons with Unsynchronized High-Voltage Pulses

Song,

Meng,

Wang

et al. 2023

Electronics

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Phase locking is an essential choice for building a coherent array, and a system of phase-locked magnetrons is relatively compact and cheaper than other microwave sources. Previous theoretical and experimental studies on phase locking are conducted using synchronized high-voltage pulses. Here, we investigate the characteristics of two phase-locked magnetrons using particle-in-cell (PIC) simulation software (CST STUDIO SUITE 2020) when two high-voltage pulses have delays. The results show that the magnetrons produced two-level RF signals because the operation could be divided into two stages. The first stage happened when one cathode emitted electrons; then, the electrons formed one spoke, traveling in synchronism with the 0-phase difference mode. Two output ports both produced half the output power of a free-running magnetron. The second stage happened after another cathode started to emit electrons, which were instantly pre-modulated by the electromagnetic field of the 0-phase difference mode produced during the first stage. In the second stage, simulations showed that pre-modulation accelerated the process of electron bunching. Eventually, two magnetrons were phase-locked, and the total output power of the two identical magnetrons nearly doubled the output power of the free-running magnetron, which demonstrated that the magnetrons were phase-locked in the high-efficiency phase-locking regime.

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confidence: 99%

Particle-in-Cell Simulations on High-Efficiency Phase-Locking Millimeter-Wave Magnetrons with Unsynchronized High-Voltage Pulses

Song,

Meng,

Wang

et al. 2023

Electronics

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A multi‐objective optimization approach for modeling and analyzing the impact of drive parameters in SiC power converters

Liu,

et al. 2024

Circuit Theory & Apps

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SummaryThis paper introduces an equivalent model including the parasitic parameters analysis of silicon carbide (SiC) MOSFETs in order to enhance their performance for high‐power density applications. The model is used to establish a mechanism that evaluates the effect of drive parameters on switching losses and electrical stress of power devices, providing a theoretical basis for optimizing the design of drive parameters. The paper finds the Pareto solution of the multi‐objective optimization model through iterative calculation of design variables, using this mechanism. The methodology is validated through experimental results from an SiC power prototype, showing an efficiency of 98.9% and safe electrical stress levels under 1500 V/100 kW operating conditions.

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Design And Implementation Of Luo Converter For Renewable Application

Bharani¹,

Elango²,

Harshavarshini³

et al. 2023

2023 9th International Conference on Electrical Energy Systems (ICEES)

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Design and Optimization of a Magnetron DC–DC Isolated Power Supply With High Efficiency

Cited by 10 publications

References 36 publications

Particle-in-Cell Simulations on High-Efficiency Phase-Locking Millimeter-Wave Magnetrons with Unsynchronized High-Voltage Pulses

Particle-in-Cell Simulations on High-Efficiency Phase-Locking Millimeter-Wave Magnetrons with Unsynchronized High-Voltage Pulses

A multi‐objective optimization approach for modeling and analyzing the impact of drive parameters in SiC power converters

Design And Implementation Of Luo Converter For Renewable Application

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