Publication detail

Electric drives and harmonic components

HÁJEK, J., BLAŽEK, F.

Original Title

Electric drives and harmonic components

English Title

Electric drives and harmonic components

Type

conference paper

Language

en

Original Abstract

This article deals with problem of harmonic currents injected to public low-voltage power distribution systems when frequency inverter is used. Frequency inverters are used for supplying asynchronous motors with variable voltage and frequency. Unfortunately, frequency inverters produce a lot of electromagnetic noise to public power supply through power lines and to surrounding devices through radio waves. Only electromagnetic noise distributed through power lines is discussed in the text. We state what are sources of electromagnetic noise in inverter, how can we portion them, how can we suppress them, what is RFI filter, THD and how to measure high harmonic currents and voltage, what are differences if RFI filter is used or not, etc. Second part of this article deals with experimental measuring of high harmonic components with harmonic analyzer BK550.

English abstract

This article deals with problem of harmonic currents injected to public low-voltage power distribution systems when frequency inverter is used. Frequency inverters are used for supplying asynchronous motors with variable voltage and frequency. Unfortunately, frequency inverters produce a lot of electromagnetic noise to public power supply through power lines and to surrounding devices through radio waves. Only electromagnetic noise distributed through power lines is discussed in the text. We state what are sources of electromagnetic noise in inverter, how can we portion them, how can we suppress them, what is RFI filter, THD and how to measure high harmonic currents and voltage, what are differences if RFI filter is used or not, etc. Second part of this article deals with experimental measuring of high harmonic components with harmonic analyzer BK550.

Keywords

electromagnetic noise, frequency inverters

RIV year

2001

Released

05.03.2001

Publisher

FEI Brno

Location

Brno

ISBN

80-214-1860-5

Book

STUDENT FEI 2001

Edition number

1

Pages from

67

Pages to

71

Pages count

5

URL

připravuje se

BibTex


@inproceedings{BUT6186,
  author="Jan {Hájek} and František {Blažek}",
  title="Electric drives and harmonic components",
  annote="This article deals with problem of harmonic currents injected to public low-voltage power distribution systems when frequency inverter is used.  Frequency inverters are used for supplying asynchronous motors with variable voltage and frequency. Unfortunately, frequency inverters produce a lot of electromagnetic noise to public power supply through power lines and to surrounding devices through radio waves.  Only electromagnetic noise distributed through power lines is discussed in the text. We state what are sources of electromagnetic noise in inverter, how can we portion them, how can we suppress them, what is RFI filter, THD and how to measure high harmonic currents and voltage, what are differences if RFI filter is used or not, etc. Second part of this article deals with experimental measuring of high harmonic components with harmonic analyzer BK550.",
  address="FEI Brno",
  booktitle="STUDENT FEI 2001",
  chapter="6186",
  institution="FEI Brno",
  year="2001",
  month="march",
  pages="67",
  publisher="FEI Brno",
  type="conference paper"
}