Скачать или смотреть A DC-DC MMC Topology for MVDC Railway Application

Paper Title: A DC-DC Modular Multilevel Converter Topology with Single Arm for MVDC Railway Application

Authors Names: Sukrashis Sarkar and Anandarup Das

Affiliation: Department of Electrical Engineering, Indian Institute of Technology Delhi

Paper abstract: This paper proposes a DC/DC Modular Multilevel Converter (MMC) topology with single arm for the Medium Voltage Direct Current (MVDC) railway application. The proposed topology converts the MVDC to the required DC link voltage of the traction motor inverter via an intermediate medium frequency transformer. The topology only uses one arm of the conventional MMC with half-bridge sub-modules in it which reduces the device counts significantly compared to conventional MMC. Further, the topology is modular, scalable and fault tolerant in nature. It also has the bi-directional power-flow capability. As the topology operates at medium frequency, the size of passive components like filters and transformer are reduced. Finally, the mathematical analysis, operation, results of the computer simulation model and down scaled laboratory model of the proposed topology in the steady state have been included in the paper.