Design of a High-Power Resonant Converter for DC Wind Turbines
Design of a High-Power Resonant Converter for DC Wind Turbines
复制标题
直流风力发电机大功率谐振变换器的设计
DOI：
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复制
发表时间：
2019
影响因子：
6.7
通讯作者：
Sriram Vaisambhayana
中科院分区：
文献类型：
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作者：
C. Dincan;P. Kjaer;Yu;Eduard Sarrá;S. Munk‐Nielsen;C. Bak;Sriram Vaisambhayana
本文提出了一种大功率，中压串联谐振变换器（SRC#），旨在应用于兆瓦级中压直流风力发电机组的设计过程和损耗估计。该转换器是一种新型的操作方法，题为脉冲消除技术，其特征在于可变频率和相移调制，低于LC谐振点。一步一步的设计过程中提出和电路元件的额定值和效率进行了比较两个变量。新的操作方法将Transformer尺寸减小到50%以下，而由于软开关特性，从零到标称功率的损耗保持在1.5%以下。一个实验装置，额定为10千瓦和5千伏输出组装提取损耗和验证半导体损耗模型。
This paper presents a design procedure and loss estimation for a high-power, medium-voltage series resonant converter (entitled SRC#), intended for application in megawatt medium-voltage dc wind turbines. The converter is operated with a novel method of operation, entitled pulse removal technique, characterized by variable frequency and phase-shift modulation, below the resonant point of the LC tank. A step-by-step design procedure is proposed and circuit component ratings and efficiency are compared for two variants. The new method of operation reduces transformer size to below 50%, whereas losses are kept below 1.5% from zero to nominal power, due to soft-switching characteristics. An experimental setup, rated for 10 kW and 5 kV output was assembled to extract losses and validate the semiconductor loss model.