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具有可逆矢量选择的三相AC/DC变换器预测占空比控制

Predictive Duty Cycle Control With Reversible Vector Selection for Three-Phase AC/DC Converters

语言:

中文摘要

传统预测占空比控制(CPDCC)在三相全桥AC/DC变换器中通过电网电压矢量位置选择相邻非零矢量对。该方法虽简单,但存在计算出的矢量持续时间频繁小于零的缺陷。本文提出了一种可逆矢量选择策略,有效解决了这一问题,提升了变换器的控制性能与稳定性。

English Abstract

The conventional predictive duty cycle control (CPDCC) of three-phase full-bridge ac/dc converters selects adjacent nonzero vector pair based on the grid-voltage vector location, then the duration for each vector is calculated. Though the vector selection method is quite simple, it has a significant disadvantage that the values of calculated durations could be frequently less than zero due to nono...
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SunView 深度解读

该研究针对三相AC/DC变换器的核心控制算法进行了优化,直接契合阳光电源组串式逆变器、集中式逆变器以及储能变流器(PCS)的底层控制技术。通过改进预测占空比控制策略,能够有效提升逆变器在电网电压波动下的输出电流质量和动态响应速度,降低开关损耗。建议研发团队将其应用于PowerTitan系列储能PCS及大功率组串式逆变器中,以优化弱电网下的并网稳定性,提升iSolarCloud智能运维平台下的电能质量监测表现。