Electromagnetic compatibility (EMC) - Part 4-40: Testing and measurement techniques - Digital methods for the measurement of power quantities of modulated or distorted signals

IEC TR 61000-4-40:2020 which is a Technical Report, deals with the assessment of electrical power quantities (RMS voltage, RMS current and active power). It explains and compares two digital algorithms suitable for power quantity measurements in fluctuating or non-periodic loads. The examples are from 50 Hz or 60 Hz power systems. This document does not attempt to cover all possible digital implementations of the algorithms used for power quantity assessment in fluctuating loads, for example in the context of the EMC assessment described in several IEC documents. Rather, it compares averaging with one of the filtering algorithms. This document aims to highlight some examples of applications that illustrate how the presented algorithms work. Further, guidance is given for quantifying the accuracy of each approach.

General Information

Status
Published
Publication Date
10-Mar-2020
Current Stage
PPUB - Publication issued
Start Date
13-Mar-2020
Completion Date
11-Mar-2020
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IEC TR 61000-4-40:2020 - Electromagnetic compatibility (EMC) - Part 4-40: Testing and measurement techniques - Digital methods for the measurement of power quantities of modulated or distorted signals
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IEC TR 61000-4-40
®

Edition 1.0 2020-03
TECHNICAL
REPORT

colour
inside


Electromagnetic compatibility (EMC) –
Part 4-40: Testing and measurement techniques – Digital methods for the
measurement of power quantities of modulated or distorted signals
IEC TR 61000-4-40:2020-03(en)

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IEC TR 61000-4-40

®


Edition 1.0 2020-03




TECHNICAL



REPORT









colour

inside










Electromagnetic compatibility (EMC) –

Part 4-40: Testing and measurement techniques – Digital methods for the

measurement of power quantities of modulated or distorted signals


























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ELECTROTECHNICAL


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ICS 33.100.01 ISBN 978-2-8322-7907-6



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– 2 – IEC TR 61000-4-40:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General . 7
5 Modulated sine waveforms used in this document to compare measurement
algorithms . 9
5.1 General . 9
5.2 Half-wave rectification . 10
5.3 Full-wave rectification . 10
5.4 Multi-cycl
...

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