輸入串聯(lián)輸出串聯(lián)型模塊化高壓電源功率變換拓?fù)涓倪M(jìn)設(shè)計(jì)
doi: 10.11999/JEIT240090
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中國(guó)科學(xué)院空天信息創(chuàng)新研究院 北京 100190
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中國(guó)科學(xué)院大學(xué) 北京 100039
基金項(xiàng)目: 國(guó)家自然科學(xué)基金(62201546)
Improved Topology of Modular High-voltage Power Converter with Input Series Output Series Configuration
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Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
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University of Chinese Academy of Sciences, Beijing 100039, China
Funds: The National Natural Science Foundation of China (62201546)
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摘要: 模塊化高壓電源具有高效率、高可靠性、可重構(gòu)性等特點(diǎn)在大功率高壓器件中得到廣泛應(yīng)用。其中基于串并聯(lián)諧振變換器的輸入串聯(lián)輸出串聯(lián)型功率變換拓?fù)溥m用于高頻高壓工作環(huán)境，具有減少功率損耗，繞組介質(zhì)損耗，利用多級(jí)變壓器寄生參數(shù)等優(yōu)勢(shì)，有廣泛的應(yīng)用前景。目前關(guān)于該拓?fù)涞难芯恐饕杏诶碚摲治龊托蕛?yōu)化，在實(shí)際高壓環(huán)境應(yīng)用中多級(jí)變壓器繞組間存在的高壓隔離問題還未得到有效解決，該文提出多級(jí)變壓器共用原邊繞組的設(shè)計(jì)，簡(jiǎn)化傳統(tǒng)變壓器單級(jí)繞制方式所存在的高壓隔離問題。然而該繞制方案會(huì)造成多級(jí)變壓器不均壓和電壓發(fā)散現(xiàn)象，因此該文同時(shí)基于利用變壓器和倍壓整流電路中二極管的寄生參數(shù)，提出改進(jìn)的拓?fù)湓O(shè)計(jì)，有效解決了分壓不均問題，進(jìn)行了仿真驗(yàn)證與試驗(yàn)驗(yàn)證。仿真結(jié)果與實(shí)驗(yàn)結(jié)果均證明了所提共用原邊繞組的高壓隔離結(jié)構(gòu)和改進(jìn)拓?fù)涞挠行浴?/div>
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關(guān)鍵詞:
- 模塊化高壓電源 /
- 高壓隔離 /
- 串并聯(lián)諧振變換器
Abstract: The modular high-voltage power supply, characterized by high efficiency, reliability, and reconfigurability, has found widespread application in high-power high-voltage devices. Among them, the input series output series topology based on the series-parallel resonant converter is suitable for high-frequency high-voltage operating environments, offering advantages such as reduced power losses, winding dielectric losses, and utilizing parasitic parameters of multi-stage transformer. It has broad prospects for application. Current research on this topology primarily focuses on theoretical analysis and efficiency optimization. In practical high-voltage environments, the high-voltage isolation issues between windings of multi-stage transformers have not been effectively addressed. In this paper, a design of shared primary windings for multi-stage transformers is proposed to simplify the high-voltage isolation issues inherent in traditional transformer single-stage winding methods. However, this winding scheme can lead to non-uniform voltage distribution and voltage divergence in multi-stage transformers. Therefore, based on utilizing the parasitic parameters of diodes in transformers and voltage doubling rectifier circuits, an improved topology design is proposed to effectively address the uneven voltage distribution issue. Simulation and experimental validations were conducted, and the results from both simulations and experiments confirm the effectiveness of the proposed high-voltage isolation structure with shared primary windings and the improved topology.表 1 不同級(jí)聯(lián)方式應(yīng)用場(chǎng)景
級(jí)聯(lián)方式 輸入串聯(lián)輸出串聯(lián) 輸入串聯(lián)輸出并聯(lián) 輸入并聯(lián)輸出串聯(lián) 輸入并聯(lián)輸出并聯(lián) 適用場(chǎng)合 高輸入、輸出電壓 高輸入電壓高輸出電流 高輸入電流高輸出電壓 高輸入、輸出電流 
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表 2 諧振變換器分類及應(yīng)用場(chǎng)景
特點(diǎn) LC串聯(lián) LC并聯(lián) LCC串并聯(lián) LLC串并聯(lián) CLL串并聯(lián) 電壓增益 0.5～1.0 1.0～10.0 0.5～3.0 1.0～2.5 1.0～2.5 傳輸效率(%) 90 90 96 97 96 適用場(chǎng)合 中壓大功率 中壓大電流 高壓大功率 中壓高效率 中壓高頻率
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表 3 電氣性能參數(shù)和諧振元件參數(shù)
參數(shù)名稱 描述 參數(shù)值 Vin 輸入電壓 70 V Vo 輸出電壓 7100 VC1, C2,···, C6n 倍壓整流電路電容 47 nF Ro 負(fù)載電阻 100 kΩ Lr 串聯(lián)諧振電感 12.5 μH Cr 串聯(lián)諧振電容 10 nF fs 開關(guān)頻率 500 kHz
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