NDLI: Harmonics-induced problems in theatrical-lighting installation: Real-case measurements and proposed solutions

Content Provider	IEEE Xplore Digital Library
Author	Demoulias, C. Samoladas, S. Gouramanis, K.
Copyright Year	2005
Description	Author affiliation: Aristotle Univ. of Thessaloniki, Thessaloniki (Demoulias, C.; Samoladas, S.; Gouramanis, K.)
Abstract	Professional light-dimming equipment used in theaters, usually employees triacs to control the rms value of voltage on the light bulbs. This paper presents a real-case problem where, voltage harmonic distortion, induced by the high harmonic currents of the light-dimming equipment, led to dimming-control malfunction. It is shown that control systems based on the detection of voltage zero-crossing may not function properly when high triplen (3rd, 9th, 15th, 21st, etc) current harmonics -such as those produced by triac operation- flow in a circuit. Measurements of current and voltage harmonic distortion at the Royal Theatre of Thessaloniki, Greece are presented. Computer simulation shows that the arrangement of the cable feeding the triacs, plays a significant role on the harmonic voltage distortion, whereas the cable cross-section has a smaller effect.
Starting Page	1
Ending Page	6
File Size	454870
Page Count	6
File Format	PDF
ISBN	9785932080344
DOI	10.1109/PTC.2005.4524485
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-27
Publisher Place	Russia
Access Restriction	Subscribed
Rights Holder	Energy Systems Institute
Subject Keyword	Thyristors Harmonic distortion Voltage control Lighting control Conductors Distortion measurement Control systems Circuits Current measurement Computer simulation triac Cable layout dimming harmonic distortion theatrical lighting
Content Type	Text
Resource Type	Article

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