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References in periodicals archive ?
The electromagnetic coupling and permanent magnet eddy current coupling can be used as adjustable speed drives, since their torque generation is based on the relative motion between one rotor generating a magnetic field and another rotor acting as a conductive part.
Typical projects may include: building faade and roof renovations; landscaping and site improvements; security and lighting improvements; site drainage and roadway improvements; major electrical improvements including switchgear replacement and emergency generator improvements; building interior remodeling; building system improvements including lighting; HVAC, plumbing, pumping, etc.; water process improvements including filter bed replacements, instrumentation improvements, chemical system improvements; pumping system improvements, including adjustable speed drives; and others.
The book begins with an overview of the market for medium and high-power switching converters, then gives basic technical details on adjustable speed drives and discusses the choice between grid interfaces or distributed generation.
"Motors with adjustable speed drives: testing protocol and efficiency standard.
The primary product line is comprised of variable frequency drives, also called adjustable speed drives (ASD).
* The stator insulation system design and components result in an anti-corona system that can withstand voltage spikes caused by fast switching IGBTs from adjustable speed drives.
Additionally, the stators insulation system design and components result in an anti-corona system that can withstand voltage spikes caused by fast switching IGBTs from adjustable speed drives. Siemens Industry Inc.,
Adjustable speed drives (ASDs) use speed control instead of throttling to control power output at maximum efficiency.
The Aegis SGR bearing protection ring, manufactured by Electro Static Technology of Mechanic Falls, Maine, safeguards motor bearings from shaft currents generated by adjustable speed drives. The rings are designed to moderate adjustable speed drive circulating currents and prolong bearing life.
Her research interests are in power electronics, renewable energy systems, adjustable speed drives and electromechanical energy conversion.
Traditionally, separately excited dc machines were the obvious choice for applications in adjustable speed drives, where independent torque and flux control is required.
One of the more recent advances companies have tried to make is installing adjustable speed drives for motors with a variable load.
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