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Analog Signals Conditioning and Discretization

Chapter
Part of the Power Systems book series (POWSYS)

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.

Keywords

Alternate Current Finite Impulse Response Hall Sensor Current Transformer Rogowski Coil 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag London 2013

Authors and Affiliations

  1. 1.Institute of Electrical EngineeringUniversity of Zielona GóraZielona GóraPoland

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