An online capacitance estimation method based on DC component applied in PFC converter with split-capacitor

被引：0

作者：

Zhu, Wenchao ^{[1
]}

Zhang, Chao ^{[1
]}

Gao, Rongwei ^{[1
]}

机构：

[1] Jiangsu Univ, Sch Elect & Informat Engn, Zhenjiang 212013, Jiangsu, Peoples R China

来源：

IEICE ELECTRONICS EXPRESS | 2023年 / 20卷 / 09期

基金：

中国国家自然科学基金;

关键词：

active power decoupling circuits; online capacitance estimation; power factor correction circuits; DC component; MODULAR MULTILEVEL CONVERTERS; POWER-DECOUPLING CONTROL; ELECTROLYTIC CAPACITORS; LINK CAPACITORS; PWM CONVERTERS; SYSTEMS;

D O I：

10.1587/elex.20.20230061

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Inaccurate capacitance significantly increases the DC-Link rip-ple voltage of active power decoupling circuit (APDC). To solve this prob-lem, a high-precision online capacitance estimation method is proposed. This method converts the AC components of decoupling capacitor into the sum of DC component and AC component with 8 times grid frequency, which is beneficial to the extraction of DC component. This DC component replaces the AC component to effectively eliminate the periodic capacitance mutation, and accurately estimate the capacitance. Based on the capaci-tance, the DC-Link ripple is controlled with the set scope. Experimental results verify the effectiveness of the proposed method.

引用

页数：1

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