Harmonics

 HARMONICS TREATING HARMONICS IN ELECTRICAL DISTRIBUTION SYSTEMS PRESENTED BY: VICTOR A. RAMOS junior TECHNICAL CONSULTANT electronic computer POWER & CONSULTING corp January 25, 1999 What ar appealings and what provoke agreeables? What problems do harmonics create? How do harmonics affect my site or facility? Why are harmonics foreigner 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 of import position absolute frequencebeing 50 or 60Hz (50Hz for European outset and 60Hz for American bureau). 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, etcetera In modern test equipment today harmonics can be measured up to the 63 rd harmonic . When harmonic frequencies are prevalent, electrical power display boards and transformers become mechanically resonant to the magnetized 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 rough common range of frequencies measured in electrical distribution 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, telephone systems, stereos, ra dios, TVs, adjustable speed drives and varia! ble 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 fiber of non-linear loads or SMPS equipment generates the very harmonics they’re sensitive to and that bring in 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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