Control topology options for single-phase UPS inverters

被引：292

作者：

Ryan, MJ

Brumsickle, WE

Lorenz, RD

机构：

[1] Department of Electrical and Computer Engineering, University of Wisconsin, Madison

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 1997年 / 33卷 / 02期

关键词：

control systems; dc-ac power conversion; impedance; inverters; observers; state space methods; state estimation; transient analysis; voltage control;

D O I：

10.1109/28.568015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Four control topologies for single-phase uninterruptible power system (UPS) inverters are presented and compared, with the common objective of providing a dynamically stiff, low total harmonic distortion (THD), sinusoidal output voltage, Full-state feedback, full-state command controllers are shown, utilizing both filter inductor current and filter capacitor current feedback to augment output voltage control, All controllers presented include output voltage decoupling in a manner analogous to ''back-electromotive force (EMF)'' decoupling in de motor drives, Disturbance input decoupling of the load current and its derivative is presented, An observer-based controller is additionally considered and is shown to be a technically viable, economically attractive option, The accuracy transfer function of the observer estimate is used to evaluate its measurement performance, Comparative disturbance rejection is evaluated by overlaying the dynamic stiffness (inverse of output impedance) frequency response of each controller on a single plot, Experimental results for one controller are presented.

引用

页码：493 / 501

页数：9

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