基于網絡控制的電力電子系統研究:Investigation on Power Electronic System Based on Networked Control
浙江大學電氣工程學院 馬皓 張堯 俞宏霞
摘要：為適應電力電子系統集成化的要求，提出了新的控制方法——網絡控制，采用該方法不僅能有利于電力電子模塊化，還能提高系統性能。本文以基于網絡控制的單相逆變器無內聯線并聯系統為例，對該系統進行數學建模，建立以有功功率和無功功率為變量的網絡控制方程，分析控制時延在該系統中的影響，并給出有關設計考慮。實驗結果表明基于網絡控制的單相逆變器無內聯線并聯系統與無網絡控制的單相逆變器無內聯線并聯系統相比，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.
關鍵詞：網絡控制； 逆變器并聯；時延； 電流均分
Keywords: networked control; inverter parallel; time-delay; current distribution