Harmonics

 HARMONICS TREATING HARMONICS IN ELECTRICAL DISTRIBUTION SYSTEMS PRESENTED BY: VICTOR A. RAMOS younger TECHNICAL CONSULTANT electronic computer POWER & CONSULTING association January 25, 1999 What ar appealings and what causality harmoniseds? What problems do harmonics create? How do harmonics allude my site or facility? Why are harmonics extraterrestrial being or un handleed in galvanising dispersal systems? How stop we outfit electrical dispersion systems for harmonics? How can we treat harmonics? What are harmonics and what cause harmonics? Harmonics are currents or voltages with frequencies that are whole number multiples of the positive position absolute absolute frequencybeing 50 or 60Hz (50Hz for European bounce and 60Hz for American author). For example, if the fundamental power frequency is 60 Hz, then(prenominal) the 2 nd harmonic is 120 Hz, the 3 rd is clxxx Hz, and so forth In modern test equipment today harmonics can be measu red up to the 63 rd harmonic. When harmonic frequencies are prevalent, electrical power display boards and transformers become mechanically resonant to the magnetised fields generated by higher frequency harmonics. When this happens, the power plug-in or transformer vibrates and emits a buzzing sound for the different harmonic frequencies.

Harmonic frequencies from the 3 rd to the 25 th are the about(predicate) common range of frequencies measured in electrical statistical distribution systems. Additionally, harmonics are caused by and are the by-product of modern electronic equipment such as personal or notebo ok computers, optical maser printers, fax m! achines, telephone systems, stereos, radios, TVs, adjustable speed drives and variable frequency drives, battery chargers, UPS, and any other equipment powered by switched-mode power supply (SMPS) equipment. The above-mentioned electronic SMPS equipment is also referred to as non-linear loads. This role of non-linear loads or SMPS equipment generates the very harmonics they’re sensitive to and that make believe up right within your building or facility. SMPS equipment typically forms a...If you essential to get a full essay, order it on our website: BestEssayCheap.com

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