基于新型升压单元的零纹波高增益DC/DC变换器

doi:10.16628/j.cnki.2095-8188.2021.04.012

电器与能效管理技术 ›› 2021, Vol. 0 ›› Issue (4): 63-69.doi: 10.16628/j.cnki.2095-8188.2021.04.012

• 分布式电源及并网技术 • 上一篇下一篇

基于新型升压单元的零纹波高增益DC/DC变换器

孙毓璞, 徐玉珍

福州大学电气工程与自动化学院, 福建福州 350108

收稿日期:2020-12-30 出版日期:2021-04-30 发布日期:2021-05-14
作者简介:孙毓璞(1996—),男,硕士研究生,研究方向为电力电子变流技术。|徐玉珍(1975—),女,副教授,博士,研究方向为电力电子变流技术。
基金资助:
*校科研启动基金(2019-JJFDKY-24)

Zero-Ripple High Voltage Gain DC-DC Converter Based on New Voltage-Lifting Unit

SUN Yupu, XU Yuzhen

College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,China

Received:2020-12-30 Online:2021-04-30 Published:2021-05-14

摘要/Abstract

摘要：

高电压增益DC/DC变换器是实现光伏发电等低压输出新能源系统并网的有效途径。提出一种基于新型升压单元的零纹波高增益DC/DC变换器,其不仅可得到根据升压单元数量进行调整的电压增益,且功率器件的电压应力较低。通过将二次型Boost变换器的两个电感耦合,并设置合理的耦合系数和匝比,可近似实现输入电流零纹波。对变换器的构造过程、工作原理、稳态特性进行分析,并通过搭建实验样机对理论研究进行验证,实验结果验证了理论分析的正确性。

关键词: 高增益DC/DC变换器, 二次型Boost变换器, 升压单元, 零纹波

Abstract:

The high-voltage gain DC-DC converter is an effective way to achieve grid connection of low voltage output new energy systems such as photovoltaic power generation.In this paper,a zero-ripple high voltage-gain DC-DC converter was proposed.It can not only get the voltage gain that can be adjusted according to the number of voltage-lifting units,but also the voltage stresses of the power devices are lower.The input current characterized with very small ripple close to zero can be achieved by coupling the two inductances of the quadratic Boost converter and suitably setting the coupling coefficients and turns ratio reasonably.The construction process,working principle,and steady-state characteristics of the converter are analyzed,and the theoretical research is verified by building an experimental prototype.The experimental results verify the correctness of the theoretical analysis.

Key words: high voltage-gain DC-DC converter, quadratic Boost converter, voltage-lifting unit, zero-ripple

中图分类号:

TM46

孙毓璞, 徐玉珍. 基于新型升压单元的零纹波高增益DC/DC变换器[J]. 电器与能效管理技术, 2021, 0(4): 63-69.

SUN Yupu, XU Yuzhen. Zero-Ripple High Voltage Gain DC-DC Converter Based on New Voltage-Lifting Unit[J]. LOW VOLTAGE APPARATUS, 2021, 0(4): 63-69.

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参考文献 15

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参数	数值
电感L₁/μH	320
电感L₂/mH	1.1
电感L₁、L₂互感M/μH	540
电感L₁₀/mH	2
电感L₂₀/mH	2
电容C₁、C₂、C₁₂、C₂₂/μF	56(450 V)
电容C₁₁、C₂₁/μF	4.75(630 V)

电压	实验值	理论分析值
U_VD1/V	95	97.9
U_VD2/V	104	101.9
U_VD3/V	200	199.9
U_VD10/V	196	199.9
U_VD20/V	196	199.9

电压	实验值	理论分析值
U_C1/V	90.3	97.9
U_C11/V	110.7	101.9
U_C21/V	94.8	101.9
U_C2/V	190.3	198.0
U_C12/V	97.8	101.9
U_C22/V	96.7	101.9

基于新型升压单元的零纹波高增益DC/DC变换器

Zero-Ripple High Voltage Gain DC-DC Converter Based on New Voltage-Lifting Unit

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