← 返回

基于锁相环同步算法的三相并网电压源变换器阻抗建模

Impedance Modeling of Three-Phase Grid-Connected Voltage Source Converters With Frequency-Locked-Loop-Based Synchronization Algorithms

语言:

中文摘要

随着电压源变换器(VSC)在电网中渗透率的提高,变换器之间及与电网间的交互引发的谐振与稳定性问题日益突出。本文采用阻抗建模方法,通过对电流控制及锁相环(FLL)等控制环节进行线性化处理,深入分析了VSC的并网稳定性,为解决复杂电网环境下的谐振问题提供了理论支撑。

English Abstract

With the increased installation of voltage source converters (VSCs) into the power grid, concerns about resonance/stability issues associated with interactions among converters, and between them and the ac grid is growing. The prevailing method for investigating these issues is the impedance modeling of VSCs, which involves linearizing all their control elements, such as their current control and ...
S

SunView 深度解读

该研究对阳光电源的核心业务至关重要。随着光伏和储能系统在弱电网环境下的应用增多,基于锁相环(FLL)的阻抗建模方法能有效指导组串式逆变器及PowerTitan/PowerStack储能变流器(PCS)的控制参数优化。通过精确的阻抗建模,公司研发团队可提前识别并抑制并网谐振,提升设备在复杂电网条件下的适应性与稳定性。建议将该建模方法集成至iSolarCloud智能运维平台的仿真分析模块中,为电站现场的谐振故障排查提供理论依据,并指导下一代构网型(GFM)产品的控制算法迭代。