[1]宋平岗,杨声弟,郑雅芝,等.负载不平衡电力电子变压器直流电压平衡控制策略[J].高压电器,2019,55(09):50-56.[doi:10.13296/j.1001-1609.hva.2019.09.007]
 SONG Pinggang,YANG Shengdi,ZHENG Yazhi,et al.DC Voltage Balance Control Strategy for Load Unbalanced Power Electronic Transformer[J].High Voltage Apparatus,2019,55(09):50-56.[doi:10.13296/j.1001-1609.hva.2019.09.007]
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负载不平衡电力电子变压器直流电压平衡控制策略()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第55卷
期数:
2019年09期
页码:
50-56
栏目:
直流变压器专题
出版日期:
2019-09-30

文章信息/Info

Title:
DC Voltage Balance Control Strategy for Load Unbalanced Power Electronic Transformer
作者:
宋平岗 杨声弟 郑雅芝 周鹏辉 江志强
(华东交通大学电气与自动化工程学院, 南昌 330000)
Author(s):
SONG Pinggang YANG Shengdi ZHENG Yazhi ZHOU Penghui JIANG Zhiqiang
(School of Electrical and Automation Engineering, East China Jiaotong University , Nanchang 330000, China)
关键词:
电力电子变压器 级联H桥整流器 电容电压平衡 陷波器 载波移相调制
Keywords:
power electronic transformer cascaded H-bridge rectifier capacitor voltage balance notch filter carrier phase shift modulation
DOI:
10.13296/j.1001-1609.hva.2019.09.007
摘要:
电力电子变压器网侧级联H桥整流器需采用中大功率高压直流电容器来维持直流电压稳 定,因此如何稳定直流侧电容电压以及降低电容容值尤为重要。文中首先建立级联H桥整流器 平均数学模型,依据瞬时功率平衡推导出直流侧电容谐波数学模型并进一步分析对电路产生影 响。提出一种基于陷波器滤波算法用于动态检测并抑制直流电容电压倍频干扰,在不增加直流 电容器情况下实现降低直流电容和抑制直流电压振荡,同时采用载波移相调制算法引入脉冲补 偿机制实现电压平衡控制。最后通过MATLAB/Simulink仿真平台验证,结果表明,所提控制策 略有效地抑制谐波稳定直流电容电压输出平衡。
Abstract:
The power electronic transformer network side cascade H-bridge rectifier needs to use medium-high power high-voltage DC capacitor to maintain the DC voltage stability, so how to stabilize the DC-side capacitor voltage and reduce the capacitance value is especially important. In this paper, the accurate average mathematical model of the cascaded H-bridge rectifier is first established. The mathematical model of the DC-side capacitance is derived based on the instantaneous power theory and further analyzed to affect the circuit. A notch filter algorithm is proposed to dynamically detect and suppress DC capacitor voltage double frequency interference, without adding DC capacitor, DC capacitor can be reduced and DC voltage oscillation can be suppressed. Meanwhile, the carrier phase shift modulation algorithm is introduced into the pulse compensation mechanism to realize voltage balance control. Finally, the MATLAB/Simulink simulation platform is verified. The results show that the proposed control strategy effectively suppresses the harmonic stable DC capacitor voltage output balance.

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备注/Memo

备注/Memo:
收稿日期:2019-06-25; 修回日期:2019-08-27 基金项目:国家自然科学基金资助项目(51367008)。 Project Supported by National Natural Science Foundation of China(51367008).宋平岗(1965—),男,教授,博士,从事方向为电力电子与新能源。 杨声弟(1991—),男,硕士研究生,从事方向为电力电子传动技术(通讯作者)。
更新日期/Last Update: 2019-09-10