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一種采樣模型預(yù)測控制的動(dòng)態(tài)電壓恢復(fù)器控制方法

來源：電工電氣發(fā)布時(shí)間：2023-04-01 08:01 瀏覽次數(shù)：405

一種采樣模型預(yù)測控制的動(dòng)態(tài)電壓恢復(fù)器控制方法

高嘉迪，何昊洋，俱世豪

(西安石油大學(xué) 電子工程學(xué)院，陜西西安 710065)

摘要：針對目前動(dòng)態(tài)電壓恢復(fù)器 (DVR) 多采用根據(jù)當(dāng)前狀態(tài)做出未來動(dòng)作的控制方法，從微觀上看總會(huì)因?yàn)椴蓸雍头答佇畔⑴c控制動(dòng)作之間存在時(shí)間延遲而產(chǎn)生誤差的問題，提出一種通過預(yù)測下一控制周期的輸出從而確定下一控制周期控制動(dòng)作的閉環(huán)結(jié)構(gòu)的模型預(yù)測控制 (MPC) 方法。該方法基于前向歐拉法建立控制預(yù)測模型，通過反饋校正的方法減少預(yù)測誤差，并通過建立合適的目標(biāo)函數(shù)，確定應(yīng)用于下一控制周期的最佳開關(guān)組合。利用 MATLAB/Simulink 軟件搭建所提控制方法的仿真模型，仿真結(jié)果表明，提出的 MPC 方法能有效減少 DVR 的補(bǔ)償誤差，具有響應(yīng)速度快、諧波含量低、設(shè)計(jì)簡單等優(yōu)點(diǎn)。

關(guān)鍵詞： 動(dòng)態(tài)電壓恢復(fù)器；模型預(yù)測控制；反饋校正；最佳開關(guān)組合

中圖分類號：TM714.2 文獻(xiàn)標(biāo)識碼：A 文章編號：1007-3175(2023)03-0025-05

A Control Method of Dynamic Voltage Restorer Based on

Sampling Model Predictive Control

GAO Jia-di, HE Hao-yang, JU Shi-hao

（School of Electronic Engineering, Xi'an Shiyou University, Xi'an 710065, China）

Abstract: The Dynamic Voltage Restorer (DVR) is now employing the control method of making future actions according to current states most of the time. Microscopically, errors always occur because of the time delay between samplings, feedback and control actions. Therefore,the paper puts forward a loop-locked Model Predictive Control (MPC) method which determines control actions of the next control cycle by predicting its outputs. The method builds a control predictive model on the basis of euler forward method. It can reduce prediction errors through feedback correction, and determine the optimal switch combination applied for the next control cycle by establishing the appropriate objective function. The simulation model of the proposed control method is established by MATLAB/Simulink, and the results show that the MPC method can effectively reduce the compensation error of DVR, and has the advantages of fast response, low harmonic content and simple design.

Key words: dynamic voltage restorer; model predictive control; feedback correction; optimal switch combination

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一種采樣模型預(yù)測控制的動(dòng)態(tài)電壓恢復(fù)器控制方法