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模块化多电平变换器二极管开路故障保护方案

Protection Scheme for Modular Multilevel Converters Under Diode Open-Circuit Faults

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中文摘要

模块化多电平变换器(MMC)因其高模块化和高功率质量在高中压领域应用广泛。然而,由于其包含大量功率电子器件,可靠性成为核心挑战。本文针对子模块(SM)中的二极管开路故障展开研究,提出了一种有效的保护方案,以提升系统运行的稳定性与安全性。

English Abstract

The modular multilevel converter (MMC) is attractive for medium- or high-power applications because of the advantages of its high modularity, availability, and high power quality. Reliability is one of the most important challenges for the MMC consisting of a large number of power electronic devices. The diode open-circuit fault in the submodule (SM) is an important issue for the MMC, which would ...
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SunView 深度解读

MMC拓扑在阳光电源的大型地面光伏电站及高压储能系统(如PowerTitan系列)中具有重要应用潜力。随着系统电压等级的提升,MMC的可靠性直接影响电站的运维成本与发电效率。该研究提出的二极管故障保护方案,可直接优化阳光电源iSolarCloud智能运维平台中的故障诊断算法,实现对变换器内部器件状态的实时监测与预警。建议研发团队将此保护逻辑集成至PCS控制策略中,以提升设备在复杂电网环境下的容错能力,降低因单点故障导致的停机风险。