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Analog Signals Conditioning and Discretization

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Digital Signal Processing in Power Electronics Control Circuits

Part of the book series: Power Systems ((POWSYS))

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Abstract

Chapter 2 is devoted to problems of analog signals acquisition for the digital control circuits of power electronics devices. In this chapter, the problems of the measurement in power electronics circuits are highlighted. Typical systems for current and voltage measurement are discussed. Particular attention is paid to galvanic isolation and the impact of a high slew rate in common mode voltage. A discussion is presented on the selection of the sample rate and number of bits. Consideration is given to the methods and circuit design to reduce quantization noise. Included is a discussion of noise shaping circuits useful for power electronics output circuits. Also included is a section on the impact of the phenomenon of jitter on the signal-to-noise ratio. In this chapter, there is also shown a method of calculating the resultant signal-to-noise ratio. Finally, in the end of this chapter a presentation of selected A/D converters suitable for use in power electronics circuits is made. Special attention is paid on simultaneously sampling A/D converters.

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Authors and Affiliations

  1. Institute of Electrical Engineering, University of Zielona Góra, Podgórna 50 Street, 65-246, Zielona Góra, Poland

    Krzysztof Sozański

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  1. Krzysztof Sozański
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Correspondence to Krzysztof Sozański .

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Sozański, K. (2013). Analog Signals Conditioning and Discretization. In: Digital Signal Processing in Power Electronics Control Circuits. Power Systems. Springer, London. https://doi.org/10.1007/978-1-4471-5267-5_2

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  • DOI: https://doi.org/10.1007/978-1-4471-5267-5_2

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  • Publisher Name: Springer, London

  • Print ISBN: 978-1-4471-5266-8

  • Online ISBN: 978-1-4471-5267-5

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