DSP-based Real-time Simulation Technology of Modular Multilevel Converter

Modular Multilevel Converter (MMC) is a highly integrated topology structure with multiple submodules, which can effectively solve the problems of transmission and consumption in renewable power generation. It is more efficient to deeply analyze MMC topology and carry out engineering designs according to various requirements by real-time simulation (RTS). This paper presents a real-time simulation modeling method of MMC based on DSP architecture and a real-time simulation platform designed by the hardware tool which is called Embedded Coder and DSP development boards. The MMC model was constructed by using the equivalent circuit of the bridge arm, and thus the real-time simulation analysis of the steady and transient working states was carried out. The accuracy and real-time performance of the equivalent model were verified by simulation. Moreover, compared with the experimental results from the platform designed, the convenience and universality of RTS platform based on DSP can be verified in this paper.