A Unified Analysis of PWM Converters in Discontinuous Modes

被引：145

作者：

Maksimovic, Dragan ^{[1
]}

Cuk, Slobodan ^{[2
]}

机构：

[1] Univ Belgrade, Fac Elect Engn, Belgrade 11001, Yugoslavia

[2] CALTECH, Power Elect Grp, Pasadena, CA 91125 USA

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 1991年 / 6卷 / 03期

关键词：

D O I：

10.1109/63.85890

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Three discontinuous operating modes of PWM converters are considered in this paper-the discontinuous inductor current mode (DICM), the discontinuous capacitor voltage mode (DCVM) and a previously unidentified mode named discontinuous quasi-resonant mode (DQRM). DC and small-signal ac analyses are applicable to all basic PWM converter topologies. Any particular topology is taken into account via its well-known dc conversion ratio in the continuous conduction mode. The small-signal model is of the same order as the state-space averaged model for the continuous mode, and it offers improved predictions of the low-frequency dynamics of PWM converters in the discontinuous modes. It is shown that converters in discontinuous modes exhibit lossless damping similar to the effect of the current-mode programming.

引用

页码：476 / 490

页数：15