双有源桥式直流变压器发展与应用

Development and Application of DC Transformer Based on Dual-active-bridge

直流变压器是实现新能源高效、经济的大规模汇集和构建直流输配电一体化网络的关键设备。文中对双有源桥式直流变压器关键技术发展和应用进行介绍和展望。首先,通过梳理直流变压器的典型应用场景,对不同场景下的应用特点进行概述。在此基础上,针对中高压直流输配电应用场景,从核心电路、典型结构、运行控制、工程化设计、实现和应用等多个方面对直流变压器的分析、设计和实用化方案进行介绍和讨论。最后,对直流变压器的未来发展方向进行展望。随着新能源和直流输配电系统迅速发展,直流变压器的大规模推广应用值得期待。

DC transformer(DCT) is the key to achieve efficient integration of new energy and connection of dc transmission and distribution buses. This paper gave a discussion on development and application of DCT based on dual-active-bridge. Firstly, the typical scenarios of DCT was summarized. On this basis, the analysis, design and implement scheme, including core circuit, typical topology, operation control, practical design, implementation and application, were discussed. At last, future research directions were prospected. Along with the rapid development of new energy and dc grid systems, the development and large-scale application of DCT are worth to expect.