单向LC型直流—直流变换器的设计与控制

LI Mengbo

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单向LC型直流—直流变换器的设计与控制

更新时间：2025-08-13

- 单向LC型直流—直流变换器的设计与控制
- Automation of Electric Power Systems Vol. 40, Issue 21, Pages: 112-116(2016)
- 作者机构：
  
  强电磁工程与新技术国家重点实验室(华中科技大学),湖北省,武汉市,430074
- 作者简介：
- 基金信息：
- DOI：
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- Published：2016
- 稿件说明：
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LI Mengbo. [J]. Automation of electric power systems, 2016, 40(21): 112-116.
DOI：

LI Mengbo. [J]. Automation of electric power systems, 2016, 40(21): 112-116. DOI：

摘要

提出一种单向LC型直流—直流变换器

可用于互联两个电压等级不同的直流系统、单向地传输直流功率。该单向LC型直流—直流变换器由电压源型换流器、不控整流器

以及连接它们的LC电路构成。研究了单向LC型直流—直流变换器的拓扑设计

推导了其电感、电容设计步骤

设计了单向LC型变换器的功率控制方法

理论分析了直流故障时

故障电流幅值的大小。然后

在PSCAD/EMTDC上搭建了30 MW ±10 kV/±100 kV仿真算例

验证了所提控制方法的正确性以及拓扑本身所具有的故障穿越能力。相较于其他直流—直流变换器

单向LC型直流—直流变换器具有直流升压比高、功率可控性好、制造成本低、具备直流故障穿越能力等优点。

Abstract

This paper is concerned with a type of unidirectional LC DC-DC converter for interconnecting two DC grids with different voltage levels. This unidirectional LC-type DC-DC converter is composed of voltage source converter

uncontrolled rectifiers and LC circuit which is in series connection with them. The topology design of the converter is studied

and the design procedures are presented. A control strategy for the unidirectional LC-type DC-DC converter is also proposed. The designed converter has the ability to retain the fault current near or within the rated values. A 30 MW ±10 kV/±100 kV model is developed on the PSCAD platform to verify the effectiveness of the control strategy during step power orders and favorable DC fault responses. Compared with other DC-DC converters

the unidirectional LC-type DC-DC converter has high stepping ratios

good controllability

low cost and the ability to ride through DC faults. This work is supported by Post-doctoral Science Foundation of China(No. 2016T90690).

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