基于双变压器的复合式谐振三电平零电流开关变换器

PAN Zhixin

您当前的位置：

首页 >

文章列表页 >

基于双变压器的复合式谐振三电平零电流开关变换器

更新时间：2025-08-13

- 基于双变压器的复合式谐振三电平零电流开关变换器
- Automation of Electric Power Systems Vol. 43, Issue 11, Pages: 135-143(2019)
- 作者机构：
  
  国网江苏省电力有限公司,江苏省,南京市,210024
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2019
- 稿件说明：
移动端阅览
PAN Zhixin. [J]. Automation of electric power systems, 2019, 43(11): 135-143.
DOI：

PAN Zhixin. [J]. Automation of electric power systems, 2019, 43(11): 135-143. DOI：

摘要

针对分布式光伏发电接入中压直流配电网的应用场合，提出了一种基于双变压器的复合式谐振三电平变换器。新型变换器是在传统中性点钳位型三电平电路的基础上，通过添加一个辅助电路实现了基础三电平电路的固定占空比运行，变换器工作于电流断续模式。其中，基础三电平电路传输大部分功率，而辅助电路采用脉宽调制方式，可以实现基础三电平电路在全负载范围内的零电流开关，从而显著降低变换器的开关损耗。重点讨论了辅助变压器变比和谐振电容对开关管电流、谐振电压峰值、谐振电感值大小的影响，提出了相应的参数设计指导原则。最后，制作了一套300~1 500 V/2 kW原理样机对所提变换器的性能进行了验证。

Abstract

A hybrid resonant three-level converter based on dual transformers is proposed

which is suitable for the access of distributed photovoltaic power to the medium voltage DC distribution network. The proposed converter can be obtained by adding an auxiliary circuit into the traditional neutral point clamped three-level circuit

achieving the basic three-level circuit operation with fixed duty cycle. The converter operates in a discontinuous current mode. The basic three-level circuit transits most of the power

and zero-current switching for the basic three-level circuit is realized in the full load range by pulse width modulation of the auxiliary circuit. As a result

the switching loss of the converter can be significantly reduced. This paper also discusses the effects of the ratio of auxiliary transformer and the resonant capacitance on the switch current

the peak value of resonant voltage and the value of resonant inductance. Then the parameter design principles are put forward. Finally

a prototype of 300~1 500 V/2 kW is built to verify the performance of the proposed converter.

关键词

Keywords

references

Views

1809

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Probabilistic Prediction Method for Interpretable Net Load Based on Kolmogorov-Arnold Network

Continuation Power Flow Calculation for DC Distribution Network Considering Control and Capacity Constraints of DC Transformer

Related Author

HUANG Yu

ZHANG Xiaoxiao

YUE Dong

HU Songlin

WANG Juan

LI Zhukun

LIU Dong

GUO Guodong

Related Institution

Institute of Advanced Technology for Carbon Neutrality, Nanjing University of Posts and Telecommunications

NARI Group Corporation (State Grid Electric Power Research Institute)

State Grid Economic and Technological Research Institute Co., Ltd.

State Grid Corporation of China

State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University)

⁰