Large industrial processes, (e.g. hypochlorate plant pumps)
Specific applications of harmonic filters for mechanical pumps (e.g. chillers,)
Specific applications of harmonic filters for mechanical fans (e.g. AHUs)
Specific filters to remedy VFD pump harmonics exceeding IEEE 519 recommendations.
~Engineering, Design, Dulles, VA
A harmonic filter was needed to filter out high frequencies in the 5th harmonic that were in the transmission system connecting a new wind farm to the grid. The source of the harmonics was unknown and the C-type filter was designed to protect the turbines and to mitigate the low order resonance condition.
~Engineering, Design, Cedar Rapids, IA
The harmonic filters typically encountered are used with 3ph AC motor controls - inverters/ VSD / VFD. In these cases, 1 or more inverter(s) on the power system requires Harmonic filtering to comply with or meet the intent of IEEE-519.
~Steve P, Marketing/Sales, Pittsburgh, PA
When specifying variable speed drives on certain applications, we have utilized a harmonic analysis and offered harmonic solutions required for the application.
~Marketing/Sales, Auckland, New Zealand
UPS Water/Wastewater treatment plants
~Stefan M, Head of Strategic Marketing, Luterbach, Switzerland
With booster water pump- 350 HP controlled by VFD (Variable frequency Drive & on 265 KW ESP's
~Umesh S, Operations, Dubai, UAE
Output of sine-wave inverters
Input of 6-pulse rectifier circuits
~Ian M, Design Engineer, Kuala Lumpur, Malaysia
To be used in water/waste water, pumping stations, various plants.
~Engineering, Design, Edison, NJ
To reduce the 3rd harmonic which becomes additive in the neutral.
~David C, Technical Support, Davenport, OK
Non -linear loads (PWM) i.e. Variable Frequency Drives
~Engineering, Consulting, Lower Templestowe, Australia
Harmonic mitigation and reduction of voltage notching.
~Lall S, Directir, Auckland, New Zealand
Made a prototype filter for academic purpose.
~Shali S, Engineering Consultant, Windhoek, Namibia
Solid State Single Sideband Transceivers
~Jorge R. Mallo, Electronic Engineer, Buenos Aires, Argentina
Reduce harmonic current
~Juanjuan Y, Research & Development, Singaproe, Singapore
Power factor correction
~Thomaz C, Engineer, SaoPaulo, Brazil
Adjustable speed drive
~Engineering, Other, Spb, Russia
~General Corporate Mgmt, Tunis, Tunisia
~Rengasamy Mani, Research & Development, Chennai, India
~Research & Development, Mexico, Mexico
~General Corporate Mgmt, Levittown, NY