← 返回

一种电流控制并网变换器工厂模型中等效电感与电阻的辨识方法

A Method for Identification of the Equivalent Inductance and Resistance in the Plant Model of Current-Controlled Grid-Tied Converters

语言:

中文摘要

精确获取变换器工厂模型的时间常数L/R对于电流控制环的设计至关重要。本文提出了一种辨识方法,即使在采用LCL滤波器的情况下,也能在低频范围内准确表征电流控制器的动态特性,从而优化并网变换器的控制性能与稳定性。

English Abstract

Precise knowledge of the plant time constant L/R is essential to perform a thorough analysis and design of the current control loop in voltage source converters (VSCs). From the perspective of the current controller dynamics in the low-frequency range, such plant time constant is also suitable for most cases in which an LCL filter is used. As the loop behavior can be significantly influenced by th...
S

SunView 深度解读

该研究直接服务于阳光电源的核心业务。对于组串式光伏逆变器和PowerTitan/PowerStack储能变流器(PCS),精确的L/R参数辨识是实现高性能电流环控制、提升弱电网适应性的关键。在iSolarCloud智能运维平台中,可利用该辨识算法实时监测电网阻抗变化,从而动态优化控制参数,提升设备在复杂电网环境下的并网稳定性和电能质量。建议研发团队将此方法集成至逆变器自适应控制算法中,以增强产品在弱电网场景下的鲁棒性。