Harmonic Current Analysis of the PSM HVPS Modules under Voltage Distortion

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY Fusion Engineering and Design Pub Date : 2024-10-08 DOI:10.1016/j.fusengdes.2024.114680

Hejun Hu , Junjia Wang , Jian Zhang , Rui Guan , Hui Chen , Junchuo Luo , Yiyun Huang

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Abstract

To reduce the errors caused by current superposition with many power modules in Pulse-step modulation (PSM) high-voltage power supply (HVPS), it is necessary to establish more accurate current models of the PSM power modules that are supplied by different windings. The electrical models of power modules connected by different windings (wye and delta) are established, and the current mathematical models in windings are deduced, respectively. The "correlation function" is introduced to establish the relation of the harmonic voltage among two power modules connected to different windings when calculating the harmonic superposition. The current mathematical models in windings of two power modules are verified by simulation, and the performance of the two methods of the correlation function proposed is compared to the result of the simulation. The research shows that the current waveform generated by the power module in the winding under the distorted voltage can be obtained by the mathematical models, and the more accurate current superposition by the correlation function which establishes the relationship between the mathematical models in the two windings. Besides, the current in the AC side of power modules is significantly affected by the different harmonic ratio of voltage and its phases.

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电压畸变情况下 PSM HVPS 模块的谐波电流分析

为了减少脉冲分步调制（PSM）高压电源（HVPS）中多个功率模块电流叠加造成的误差，有必要为由不同绕组供电的 PSM 功率模块建立更精确的电流模型。本文建立了由不同绕组（wye 和 delta）连接的功率模块的电气模型，并分别推导出了绕组中的电流数学模型。在计算谐波叠加时，引入了 "相关函数 "来建立连接到不同绕组的两个功率模块之间的谐波电压关系。通过仿真验证了两个功率模块绕组中的电流数学模型，并将提出的两种相关函数方法的性能与仿真结果进行了比较。研究表明，功率模块在畸变电压下绕组中产生的电流波形可以通过数学模型获得，而建立两个绕组中数学模型之间关系的相关函数可以获得更精确的电流叠加。此外，功率模块交流侧的电流受电压及其相位的不同谐波比影响很大。

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来源期刊

Fusion Engineering and Design 工程技术-核科学技术

CiteScore

3.50

自引率

23.50%

发文量

275

审稿时长

3.8 months

期刊介绍： The journal accepts papers about experiments (both plasma and technology), theory, models, methods, and designs in areas relating to technology, engineering, and applied science aspects of magnetic and inertial fusion energy. Specific areas of interest include: MFE and IFE design studies for experiments and reactors; fusion nuclear technologies and materials, including blankets and shields; analysis of reactor plasmas; plasma heating, fuelling, and vacuum systems; drivers, targets, and special technologies for IFE, controls and diagnostics; fuel cycle analysis and tritium reprocessing and handling; operations and remote maintenance of reactors; safety, decommissioning, and waste management; economic and environmental analysis of components and systems.