Ultra-low harmonic drive earns double gold "Product of the Year" award

11/30/2006


"It is satisfying when engineers and subscribers to the media… raise their hands and say, 'look, this is a good, right product for the realities of my real-life, real-time applications,'" said Ken Graber, ABB, Low Voltage Drives after receiving the news that the company's line of ultra-low harmonic drives received an award. The double-gold Product of the Year award was from Consulting and Specifying Engineer ( CSE ), a Reed Business Information publication and Control Engineering sister publication. Each year, CSE holds a Product of the Year competition to identify the best, peer-reviewed new products in the engineering disciplines CSE regularly covers: automation & control, electrical, fire protection, HVAC, lighting, motors/drives, security & communications and power quality/reliability.

Harmonic distortion originating in drive electronics of large motors can feed back into the facility's electrical power system, interfering with proper operation of sensitive equipment, such as computers. These harmonics can disturb power supplies and sensitive equipment, and cause increased power losses in distribution lines. Power companies respond by imposing increasingly rigorous power-quality standards.

ABB says the ultra low harmonic drives make it possible for users to meet and exceed IEEE519-1992 and similar power-quality standards at the drives' input terminals by utilizing an active converter with direct torque control (DTC) to eliminate low order harmonics, and an active front-end inductor/capacitor/inductor (LCL) line filter to reduce high frequency (> 1 kHz) harmonics. The resulting total harmonic current distortion is approximately 4% of the nominal inverter current rating at full load.

The drives are ideal for the wide range of motor-control applications where "clean power" is essential. These include controlling pumps, fans, compressors and conveyors in industrial sectors such as water and wastewater, HVAC, building automation, mining, gas, oil and chemicals, and marine applications.

CSE reveals all award winners, including the Silver and Bronze finalists, in its November 2006 issue.

For more information about mitigating the effects of harmonic distortion, visit the Control Engineering website at www.controleng.com and type "harmonic distortion" into the search toolbar at the top of any page.

See also:
www.csemag.com
www.abb.com

C.G. Masi , senior editor, Control Engineering





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