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采用电容分压虚拟接地连接的iTCM运行三相三线电压源变换器系统

iTCM-Operated Three-Phase Three-Wire Voltage-Source Converter System Featuring Capacitor-Split Virtual Ground Connection

语言:

中文摘要

本文提出了一种集成三角电流模式(iTCM)调制的三相三线电压源变换器(VSC)。通过引入虚拟接地(VG)技术,iTCM能够有效实现零电压开关(ZVS),从而显著降低半导体开关损耗,提升并网变换器的整体效率。

English Abstract

High efficiency can be achieved in grid-connected converters by implementing a zero-voltage switching mechanism, such as the integrated triangular current mode (iTCM) modulation, which reduces the switching losses in the semiconductors. The iTCM can be readily adapted to a three-phase three-wire voltage-source converter (VSC) with the help of virtual ground (VG), which decouples the operation of t...
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SunView 深度解读

该技术通过iTCM调制实现零电压开关,对阳光电源的组串式逆变器和集中式逆变器产品线具有重要的技术参考价值。在高功率密度设计趋势下,利用虚拟接地技术优化三相三线制拓扑,有助于进一步降低开关损耗,提升整机效率。建议研发团队关注该调制策略在提升逆变器轻载效率及减小磁性元件体积方面的潜力,特别是在下一代高频化组串式逆变器设计中,可作为降低散热压力、提升功率密度的技术储备。