In Circuit Frequency Response Analysis for Control Design and Monitoring of Power Converters
In Circuit Frequency Response Analysis for Control Design and Monitoring of Power Converters

Author: Manish Bhardwaj (Electrical engineer)

Publisher:

Published: 2018

Total Pages:

ISBN-13:

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In power electronic applications, frequency response analysis (FRA) data is used to analyze the plant, design the control and verify the control design. Traditionally, external equipment is used to measure the frequency response by breaking the feedback path and injecting signals inside the closed loop system. This limits the use of FRA to design time of the converter. Recently in-circuit FRA measurement techniques have been presented. However, most techniques so far have required either special hardware to run, like FPGA, or required host processing power to do the complete computation. The aim of this research is to: • Design an in-circuit frequency response measurement algorithm that can run in a cycle efficient manner without any host computation requirements and is easily embedded into a commercial microcontroller used for controlling the power stage. • Highlight the constraints and assumptions under which in-circuit FRA can work, along with limits of in-circuit FRA such as noise performance and frequency bands. • Develop and demonstrate use of the designed in-circuit FRA on DC-DC, AC-DC and DC-AC converters, proving and highlighting the wide applicability of the developed technique for rapid control design. • Apply the developed in-circuit FRA for monitoring and diagnostic applications, showcasing applicability for extending capabilities with digital control of power converters.

Summary Technical Report
Summary Technical Report

Author: United States. Office of Scientific Research and Development. National Defense Research Committee. Division 11

Publisher:

Published: 1946

Total Pages: 204

ISBN-13:

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Dielectrics in Electric Fields
Dielectrics in Electric Fields

Author: Gorur Govinda Raju

Publisher: CRC Press

Published: 2017-07-28

Total Pages: 774

ISBN-13: 1498765211

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Dielectrics in Electric Fields explores the influence of electric fields on dielectric—i.e., non-conducting or insulating—materials, examining the distinctive behaviors of these materials through well-established principles of physics and engineering. Featuring five new chapters, nearly 200 new figures, and more than 800 new citations, this fully updated and significantly expanded Second Edition: Analyzes inorganic substances with real-life applications in harsh working conditions such as outdoor, nuclear, and space environments Introduces methods for measuring dielectric properties at microwave frequencies, presenting results obtained for specific materials Discusses the application of dielectric theory in allied fields such as corrosion studies, civil engineering, and health sciences Combines in one chapter coverage of electrical breakdown in gases with breakdown in micrometric gaps Offers extensive coverage of electron energy distribution—essential knowledge required for the application of plasma sciences in medical science Delivers a detailed review of breakdown in liquids, along with an overview of electron mobility, providing a clear understanding of breakdown phenomena Explains breakdown in solid dielectrics such as single crystals, polycrystalline and amorphous states, thin films, and powders compressed to form pellets Addresses the latest advances in dielectric theory and research, including cutting-edge nanodielectric materials and their practical applications Blends early classical papers that laid the foundation for much of the dielectric theory with more recent work The author has drawn from more than 55 years of research studies and experience in the areas of high-voltage engineering, power systems, and dielectric materials and systems to supply both aspiring and practicing engineers with a comprehensive, authoritative source for up-to-date information on dielectrics in electric fields.