为减小传统DC-DC变换器中存在输入电流纹波大、开关管电压应力高和电压增益低等问题,提出一种基于磁集成的零输入电流纹波可扩展高增益DC-DC变换器。该变换器将磁集成技术与耦合电感纹波抑制技术结合,仅采用一个磁芯元件,既可消除输入电流纹波,又可获得高电压增益,并可形成一系列扩展单元,进一步提升电压增益,减小开关器件的电压应力。详细分析变换器的工作原理、稳态性能、增益扩展、磁集成原理和零输入电流纹波特性。为验证所提变换器相关理论的可行性,搭建一台140 W、24 V/400 V的实验样机,实验结果基本与理论分析一致。
Abstract
High-voltage gain DC-DC converters are widely used in renewable energy systems, and problems such as large input current ripple, high switching tube voltage stress, and low voltage gain are urgently needed to be solved in this type of DC-DC converters. In this paper, a zero-input current ripple scalable high-gain DC-DC converter based on magnetic integration is proposed. The converter combines the magnetic integration technology with the coupled inductor ripple suppression technology, using only one magnetic core element, which can eliminate the input current ripple and obtain high voltage gain, and can form a series of expansion units to further enhance the voltage gain and reduce the voltage stress of the switching devices. In the paper, the operating principle, steady state performance, gain expansion, magnetic integration principle and conditions for realizing the zero input current ripple characteristics of the converter are analyzed in detail. In order to verify the feasibility of the proposed converter theory, a 140 W, 24 V/400 V experimental prototype is built, and the experimental results are basically consistent with the theoretical analysis.
关键词
DC-DC变换器 /
增益调节 /
光伏发电 /
零纹波 /
磁集成 /
扩展单元
Key words
DC-DC converter /
gain regulation /
photovoltaic power /
zero ripple /
magnetic integration /
expandable units
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参考文献
[1] HU R J, ZENG J, LIU J F, et al.An ultrahigh step-up quadratic boost converter based on coupled-inductor[J]. IEEE transactions on power electronics, 2020, 35(12): 13200-13209.
[2] 张民, 袁成功, 薛鹏飞, 等. 高增益耦合电感DC-DC变换器及其稳定性控制[J]. 太阳能学报, 2023, 44(7): 198-206.
ZHANG M, YUAN C G, XUE P F, et al.High-gain coupled inductor DC-DC converter and stability control[J]. Acta energiae solaris sinica, 2023, 44(7): 198-206.
[3] 孙孝峰, 耿晓珑, 周悦, 等. 基于开关电容的高增益双输入变换器[J]. 太阳能学报, 2021, 42(3): 268-275.
SUN X F, GENG X L, ZHOU Y, et al.Dual-input converter with high-gain based on switched-capacitor[J]. Acta energiae solaris sinica, 2021, 42(3): 268-275.
[4] QIAN W, CAO D, CINTRON-RIVERA J G, et al. A switched-capacitor DC-DC converter with high voltage gain and reduced component rating and count[J]. IEEE transactions on industry applications, 2012, 48(4): 1397-1406.
[5] SALVADOR M A, LAZZARIN T B, COELHO R F.High step-up DC-DC converter with active switched-inductor and passive switched-capacitor networks[J]. IEEE transactions on industrial electronics, 2018, 65(7): 5644-5654.
[6] LEE Y S, CHOU Z H, HUANG S S, et al.Quadratic boost converter with switched capacitor and coupled inductor for PV system applications[C]//2013 IEEE 10th International Conference on Power Electronics and Drive Systems (PEDS). Kitakyushu, Japan, 2013: 38-43.
[7] MIRZAEE A, MOGHANI J S.Coupled inductor-based high voltage gain DC-DC converter for renewable energy applications[J]. IEEE transactions on power electronics, 2020, 35(7): 7045-7057.
[8] FREITAS A A A, TOFOLI F L, SÁ E M Jr, et al. High-voltage gain DC-DC boost converter with coupled inductors for photovoltaic systems[J]. IET power electronics, 2015, 8(10): 1885-1892.
[9] TORKAN A, EHSANI M.A novel nonisolated Z-source DC-DC converter for photovoltaic applications[J]. IEEE transactions on industry applications, 2018, 54(5): 4574-4583.
[10] HAJI-ESMAEILI M M, BABAEI E, SABAHI M. High step-up quasi-Z source DC-DC converter[J]. IEEE transactions on power electronics, 2018, 33(12): 10563-10571.
[11] ZHOU L W, ZHU B X, LUO Q M, et al.Interleaved non-isolated high step-up DC/DC converter based on the diode-capacitor multiplier[J]. IET power electronics, 2014, 7: 390-397.
[12] HU X F, GONG C Y.A high gain input-parallel output-series DC/DC converter with dual coupled inductors[J]. IEEE transactions on power electronics, 2015, 30(3): 1306-1317.
[13] PAN C T, CHUANG C F, CHU C C.A novel transformer-less adaptable voltage quadrupler DC converter with low switch voltage stress[J]. IEEE transactions on power electronics, 2014, 29(9): 4787-4796.
[14] KUMAR A, SENSARMA P.Ripple-free input current high voltage gain DC-DC converters with coupled inductors[J]. IEEE transactions on power electronics, 2019, 34(4): 3418-3428.
[15] CHENG M C, PAN C T, TENG J H, et al.An input current ripple-free flyback-type converter with passive pulsating ripple canceling circuit[J]. IEEE transactions on industry applications, 2017, 53(2): 1210-1218.
[16] DO H L.Improved ZVS DC-DC converter with a high voltage gain and a ripple-free input current[J]. IEEE transactions on circuits and systems Ⅰ: regular papers, 2012, 59(4): 846-853.
基金
晋江市福大科教园区发展中心科研项目（2019-JJFDKY-37）
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