Fault tolerant multi-kW DC transformer structure for wind farms
Fault tolerant multi-kW DC transformer structure for wind farms
复制标题
风电场容错多kW直流变压器结构
DOI：
--
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
G. Adam
中科院分区：
文献类型：
--
作者：
K. Ahmed;G. Adam
本文提出了一种适用于海上风电场应用的容错 LC 谐振 DC/DC 转换器。研究了用于高压直流输电应用的三台风力发电机组并联配置的多端风能转换系统。讨论了所提出系统的设计和建模。 LC电路的主要目的是将稳态故障电流维持在额定值。这可以保护转换器半导体。在这种情况下，可以通过交流机械断路器来中断永久故障电流。而且不再需要通过并联晶闸管来保护反并联二极管。利用MATLAB/SIMULINK软件对上述设计方案进行了详细的仿真确认和验证。模拟包括电网集成和风力发电机组之间的相互作用。
This paper proposes a fault tolerant LC resonant DC/DC converter for offshore wind farm applications. A multi-terminal wind energy conversion system of three wind turbine units connected in parallel configuration for HVDC application is investigated. The design and modelling of the proposed system are addressed. The main aim of the LC circuit is to maintain the steady state fault current at rated value. This results in protecting the converter semiconductors. In such case, the permanent fault current can be interrupted by the AC mechanical circuit breaker. Moreover, it not required any more to protect the antiparallel diode by connecting thyristor in parallel. The aforementioned design solutions are confirmed and verified by detailed simulations using MATLAB/SIMULINK software. The simulation includes grid integration and interaction between the wind turbine units.