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对于三相PWM调整器的离散时间自适应控制

Bo Hou¹, Jiayan Qi¹, Huan Li¹

¹School of Electrical Engineering, Shaanxi University of Technology, Hanzhong 723001, China.

Sensors (Basel, Switzerland)

|May 25, 2024

概括

本研究介绍了三相PWM整流器的双循环离散时间自适应控制 (DDAC). DDAC 方法提高了对电感参数不匹配和直流负载干扰的稳定性,提高了性能.

科学领域:

电气工程电气工程
控制系统工程控制系统工程
电力电子电力电子电力电子

背景情况:

三相PWM整流器在功率转换系统中至关重要.
参数不确定性和负载变化挑战了整流器控制性能.
现有的控制方法往往缺乏对这些干扰的稳定性.

研究的目的:

为三相PWM整流器提出一种新的双循环离散时间自适应控制 (DDAC) 方法.
为了提高调整器控制系统对参数不匹配和负载干扰的稳定性和适应性.
为了提高稳定状态和动态性能,并减少电流波.

主要方法:

使用前方欧勒离散,建立了三相PWM整流器的离散时间模型.
作为基础,开发了一种双循环离散时间反线性化控制 (DDFLC).
使用梯度下降的自适应感应干扰观察器 (AIDO) 已被用于当前循环.
基于离散时间的利亚普诺夫理论的负载参数适应定律 (LPAL) 为电压循环设计.

主要成果:

AIDO有效地估计和补偿来自不匹配的感应参数的一次性干扰.
LPAL准确地估计并实时适应直流负载参数变化.
与DDFLC和双环离散时间PI控制 (DDPIC) 相比,DDAC表现出优越的稳定状态和动态性能.
DDAC显著降低了当前律的含量.

结论:

拟议的DDAC方法对感应参数不确定性和直流负载干扰具有强大的稳定性.
DDAC显著提高了控制性能,并减少了三相PWM整流器中的电流波.
这种自适应控制策略为实际功率电子应用提供了可靠的解决方案.

关键词:

离散时间的自适应控制.离散时间反线性化控制控制感应度参数不匹配的不匹配负载干扰负载干扰三相PWM整流器的整流器

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