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CN104269875A 一种基于MMC模块化多电平变换器的混合储能拓扑结构 无效 - 驳回

一种基于MMC模块化多电平变换器的混合储能拓扑结构
摘要：
本发明涉及一种基于MMC模块化多电平变换器的混合储能拓扑结构，该结构包括一正桥臂和一负桥臂，所述正桥臂由功率变换子单元1至n依次串联而成，所述正桥臂一端连接高压直流正母线，另一端经过一限流电抗器连接到高压三相交流电网；所述负桥臂由功率变换子单元n+1至2n依次串联而成，所述负桥臂一端连接高压直流负母线，另一端经过一限流电抗器连接到高压三相交流电网；所述每个功能变换子单元由功率变换模块、电位隔离模块和储能模块串联而成。本发明使多种储能体灵活接入电力系统，为电力系统提供不间断、高质量、控制灵活、操作安全的储能功能和服务。
摘要（英）：

The invention relates to a hybrid energy storage topological structure on the basis of an MMC (modular multilevel converter). The structure comprises a positive bridge arm and a negative bridge arm; the positive bridge arm is formed by sequentially connecting power conversion subunits 1 to n in series; one end of the positive bridge arm is connected with a high-voltage DC (Direct Current) positive bus bar and the other end of the positive bridge arm is connected to a high-voltage three-phase AC (Alternating Current) power grid by a current limiting reactor; the negative bridge arm is formed by sequentially connecting power conversion subunits n+1 to 2n in series; one end of the negative bridge arm is connected with a high-voltage DC negative bus bar and the other end of the negative bridge arm is connected to the high-voltage three-phase AC power grid by a current limiting reactor; each functional conversion subunit is formed by connecting a power conversion module, a potential isolation module and an energy storage module in series. According to the invention, various energy storage bodies are flexibly switched into a power system and an energy storage function and a service which are uninterrupted, high in quality, flexible to control and safe to operate are provided for the power system.

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