Emerson switched reluctance motor system
Emerson Motor Co. anounces the launch of a new commercial line of switched reluctance (SR) motors and controllers designed to provide North American industry with the benefit of this advanced motor technology in a wide range of applications. This is a March 2010 Control Engineering North American print edition Product Exclusive.
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Emerson Motor Co. announces the launch of a new commercial line of switched reluctance (SR) motors and controllers designed to provide North American industry with the benefit of this advanced motor technology in a wide range of applications. The launch commercializes Emerson’s trademarked “SR Drives” motor technology, which is currently working for the company’s customers in Europe and other parts of the world, where higher speeds or higher torques provide advantages over traditional induction motors. The SR Drives product line will include power ratings from 30 hp through 250 hp (approx. 22 kW - 190 kW). Switched reluctance motors provide significantly higher torque density, improved efficiency across a wider speed range, and inherently more rugged construction compared to induction motors, while providing benefits of controlled speed to optimize performance and system efficiency.
A further benefit is input frequency independence for the controller relative to 50 Hz or 60 Hz supply. This often allows one product version to serve various applications worldwide. Emerson has more than 20 years of experience designing and building SR systems for the global market. Industrial applications have included screw compressors, centrifugal pumps, and high-speed centrifuges operating at speeds over 20,000 rpm. Other applications have focused on high-torque performance such as mining equipment and conveying systems where SR Drives motor systems have simplified drive trains by eliminating fluid couplings and reducing gearing requirements.
“We are bringing this advanced technology to our North American production facilities to better support our performance oriented customers, and also to take advantage of our local plants and workforce,” says Rich Heppe, president of Emerson Industrial Motors and Systems. (See related SR motors article on page 38 in the Control Engineering North American printed edition.)
Emerson Motor Co.
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