Pulse Width Modulated DC-DC Converters

ISBN-13: 9780412105418 / Angielski / Twarda / 1997 / 234 str.

Keng Wu; Chih Wu Keng Chih Wu

Opis

For the first time in power electronics, this comprehensive treatment of switch-mode DC/DC converter designs addresses many analytical closed form equations such as duty cycle prediction, output regulation, output ripple, control loop-gain, and steady state time-domain waveform. Each of these equations are given various topologists and configurations, including forward, flyback, and boost converters. Pulse Width Modulated DC/DC Converters begins with a detailed approach to the quiescent operating locus of a power plant under open-loop. The reader is then led through other supporting circuits once again in the quiescent condition. These exercises result in the close-loop formulations of the subject system, providing designers with the ability to study the sensitivities of a system against disturbances. With the quiescent conditions well established, the book then guides the reader further into the territories of system stability where small signal behaviors are explored. Finally, some important large signal time-domain studies cap the treatment. Some distinctive features of this book include: *detailed coverage of dynamic close-loop converter simulations using only personal computer and modern mathematical software *Steady-state, time-domain analysis based on the concept of continuity of states Voltage-mode and current-mode control techniques and their differences of merits A detailed description on setting up different equations for DC/DC converters'simulation using only PC

Spis treści

Part I: The fundamentals: Capacitor, inductor, and transformer. Topology_basics of DC/DC converters. Passive filter and frequency content of waveforms. Part II: Forward converter: Steady-state duty cycle equation. Output voltage regulation. Small signal stability analysis. Series-pass regulator. Time-domain studies and filter design. High stress parts and power dissipation. Part III: Flyback converter and boost converters: Flyback converter in discontinuous conduction mode. Boost converter in continuous conduction mode. Part IV: Current-mode and simulation: current-mode control. Simulation of PWM forward converter. Simulation of flyback converter with current-mode control. Appendix. References. Index.