基于網(wǎng)絡(luò)控制的電力電子系統(tǒng)研究:Investigation on Power Electronic System Based on Networked Control
浙江大學(xué)電氣工程學(xué)院 馬皓 張堯 俞宏霞
摘要：為適應(yīng)電力電子系統(tǒng)集成化的要求，提出了新的控制方法——網(wǎng)絡(luò)控制，采用該方法不僅能有利于電力電子模塊化，還能提高系統(tǒng)性能。本文以基于網(wǎng)絡(luò)控制的單相逆變器無內(nèi)聯(lián)線并聯(lián)系統(tǒng)為例，對(duì)該系統(tǒng)進(jìn)行數(shù)學(xué)建模，建立以有功功率和無功功率為變量的網(wǎng)絡(luò)控制方程，分析控制時(shí)延在該系統(tǒng)中的影響，并給出有關(guān)設(shè)計(jì)考慮。實(shí)驗(yàn)結(jié)果表明基于網(wǎng)絡(luò)控制的單相逆變器無內(nèi)聯(lián)線并聯(lián)系統(tǒng)與無網(wǎng)絡(luò)控制的單相逆變器無內(nèi)聯(lián)線并聯(lián)系統(tǒng)相比，有利于提高均流度。
ABSTRACT: With the development of integration for power electronic system, a novel control method named Networked Control is proposed. It may help to modularization of power electronics and can improve system performance.The single phase inverter parallel system without inter connection based on networked control system is taken as an example.Mathematical model and the networked control equation with the active and reactive power are derived. Through the analysis of effect on control time-delay in the system, a design method for networked control system of power electronics including time-delay is presented. Based on the experimental results, the performance of current distribution for the single phase inverter parallel system without inter connection based on networked control system can be improved.
關(guān)鍵詞：網(wǎng)絡(luò)控制； 逆變器并聯(lián)；時(shí)延； 電流均分
Keywords: networked control; inverter parallel; time-delay; current distribution