Digital Signal Processing in Power Electronics Control Circuits

ISBN-13: 9781447173311 / Angielski / Twarda / 2017 / 340 str.

Krzysztof Sozański

Opis

Many digital control circuits in current literature are described using analog transmittance. This may not always be acceptable, especially if the sampling frequency and power transistor switching frequencies are close to the band of interest. Therefore, a digital circuit is considered as a digital controller rather than an analog circuit. This helps to avoid errors and instability in high frequency components. Digital Signal Processing in Power Electronics Control Circuits covers problems concerning the design and realization of digital control algorithms for power electronics circuits using digital signal processing (DSP) methods. This book bridges the gap between power electronics and DSP. The following realizations of digital control circuits are considered: digital signal processors, microprocessors, microcontrollers, programmable digital circuits. Discussed in this book is signal processing, starting from analog signal acquisition, through its conversion to digital form, methods of its filtration and separation, and ending with pulse control of output power transistors. The book is focused on two applications for the considered methods of digital signal processing: an active power filter and a digital class D power amplifier.The major benefit to readers is the acquisition of specific knowledge concerning discussions on the processing of signals from voltage or current sensors using a digital signal processor and to the signals controlling the output inverter transistors. Included are some Matlab examples for illustration of the considered problems.

Spis treści

Introduction.- Analog Signals Conditioning and Discretization.- Selected Methods of Signal Filtration and Separation and their Implementation.- Selected Active Power Filter Control Algorithms.- Digital Signal Processing Circuits for Digital Class D Power Amplifiers.- Conclusion.

O autorze

Krzysztof Sozański is an Associate Professor in the Electrical Engineering Institute at the University of Zielona Góra, Zielona Góra, Poland. His main research areas are: digital signal processing, digital signal processing in power electronics, realizations of advanced control algorithms using digital signal processors, programming of digital signal processors (DSP), software for microcontrollers and DSP, especially C language, Matlab, Pspice, Psim for simulation, and designing magnetic elements for power electronics.

Blurb

This revised and extended second edition covers problems concerning the design and realization of digital control algorithms for power electronics circuits using digital signal processing (DSP) methods. This book discusses signal processing, starting from analog signal acquisition, through conversion to digital form, methods of filtration and separation, and ending with pulse control of output power transistors. The book is focused on two applications for the considered methods of digital signal processing, a three-phase shunt active power filter and a digital class-D audio power amplifier. The book bridges the gap between power electronics and digital signal processing.

Many control algorithms and circuits for power electronics in the current literature are described using analog transmittances. This may not always be acceptable, especially if half of the sampling frequencies and half of the power transistor switching frequencies are close to the band of interest. Therefore in this book, a digital circuit is treated as a digital circuit with its own peculiar characteristics, rather than an analog circuit. This helps to avoid errors and instability.

This edition includes a new chapter dealing with selected problems of simulation of power electronics systems together with digital control circuits. The book includes numerous examples using MATLAB and PSIM programs.