CAJ | 학술논문

逆变器是风力发电并网系统的主要部分,而Z源变换器因其具有的诸多优点已成为当今研究的热点。其中逆变器的控制策略是决定系统性能优劣和能否可靠运行的关键。文章在对风力发电并网逆变器系统数学模型分析的基础上,采用三值逻辑SPWM控制方法进行调制,从而设计出合适的逻辑开关方程来控制电流型Z源逆变器。仿真实验结果表明,该控制策略能获得较好的控制性能,并能实现单位功率因数校正。
역변기시풍력발전병망계통적주요부분,이Z원변환기인기구유적제다우점이성위당금연구적열점。기중역변기적공제책략시결정계통성능우렬화능부가고운행적관건。문장재대풍력발전병망역변기계통수학모형분석적기출상,채용삼치라집SPWM공제방법진행조제,종이설계출합괄적라집개관방정래공제전류형Z원역변기。방진실험결과표명,해공제책략능획득교호적공제성능,병능실현단위공솔인수교정。
Z-source converter now became research hotspot due to its advantages.Since inverter is the main part of the wind power grid system,and the control strategy of the inverter is the key which determines the good and bad of the system performance and if it could operate reliably.The paper uses three value logic SPWM control method and designs appropriate logic switch equation to control the current-fed Z-source inverter,based on the analysis of the mathematical model of the wind power grid system.Simulation results show that this control strategy can achieve good control performance,and can realize the unit power factor correction.