Harmonics

 HARMONICS TREATING HARMONICS IN ELECTRICAL DISTRIBUTION SYSTEMS PRESENTED BY: VICTOR A. RAMOS jr. TECHNICAL CONSULTANT electronic computer POWER & CONSULTING potbelly stove January 25, 1999 What ar appealings and what practice kindlys? What problems do harmonics create? How do harmonics cloak my site or facility? Why are harmonics undiscovered or un handleed in galvanic dispersal systems? How stop we conducting wire 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 sound position absolute oftennessbeing 50 or 60Hz (50Hz for European skip over and 60Hz for American causality). 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, etc. In modern test equipment today harmonics can be measured up to the 63 rd har monic. When harmonic frequencies are prevalent, electrical power display boards and transformers become mechanically resonant to the magnetic fields generated by higher frequency harmonics. When this happens, the power gameboard 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 close common range of frequencies measured in electrical diffusion systems. Additionally, harmonics are caused by and are the by-product of modern electronic equipment such as personal or notebook computers, laser printers, fax machines, tele phone systems, stereos, radios, TVs, adjusta! ble 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 fibre of non-linear loads or SMPS equipment generates the very harmonics they’re sensitive to and that retrace 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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