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Bearing Damage… a Lurking Problem in Electric Cars
Electric cars are news. Every major automaker has introduced some electric vehicle, and the trend seems to be toward greater reliance on electric motors. The “Holy Grail” is a battery electric vehicle (BEV, a car powered solely by electricity) with an extended driving range, at a reasonable price. But the greater the reliance on electric motors, the greater the potential for electrical bearing damage. At the heart of every BEV and hybrid is an alternating-current (AC), three-phase traction motor/generator. <Click here to read the full article>
Hardware-in-the-Loop Simulation of Electrified Powertrains
One promising drivetrain concept for meeting the increasing demands on fuel economy and emission reduction is the hybrid electric powertrain. This combination of well-known, state-of-the-art combustion engines, powerful electric motors and storage devices in various configurations gives customers remarkable fuel savings. However, it also involves a great increase in system complexity. Combining multiple technical domains, such as mechanics, thermodynamics, chemistry, electrics and control engineering, is an enormous challenge to development and test engineers. <Click here to read the full article>
Improved Self-Protected Intelligent Power Modules with Increased Efficiency for 10 kW to 100 kW Motor Drives
Since their introduction twenty years ago, Intelligent Power Modules(IPMs) have evolved with improvements in efficiency, functionality, and protection effectiveness. Key features of today’s IPMs include full gate CSTBT chips that achieve low loss while maintaining short circuit ruggedness by utilizing a dedicated control IC. Temperature sensing has been moved onto the IGBT chips from the isolating substrate to provide individual chip protection. Today’s IPM provides features and advantages that are difficult, if not impossible, to implement in a conventional IGBT gate drive. <Click here to read the full article>
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Pittman G30A Planetary Gearbox for DC Motors Brings Torque Density to New Heights
Pittman G30A planetary gearboxes are designed with maximum torque density and durability in mind. These small gearboxes are engineered to complement five different series of Pittman motors allowing a wide range of output torques and speeds.<Click here to read the full article>
BEI Kimco Magnetics Introduces Outer Member Rotating Motor Featuring Proprietary Hall Commutation Circuit for Low Jitter and High Accuracy Velocity Control
BEI Kimco Magnetics has introduced the DXH15 series outer member rotating BLDC motor to meet the high accuracy requirements for a variety of industrial scanning applications. <Click here to read the full article>
NAI Adds High-Performance Motor Controller Module for Critical, Rugged, Motion Applications
North Atlantic Industries (NAI) has added a new three-axis motion control module (M*) based on the Magellan MC58000 Series Processor, adding motor control capability to multi-function board platforms resulting in a fully integrated servo motor control embedded card for use in on-the-move, feedback, robotic/autonomous, targeting, positioning and manufacturing process control systems.<Click here to read the full article>
Brazil Overtakes China as Fastest Growing Medium Voltage Drives Market
Growth in the Brazilian medium voltage drives market will outpace that of the Chinese market by 2 percent during the next three years, with revenue growth forecast at 18.5 percent annually in Brazil from 2011 to 2014, according to two new studies by IMS Research.<Click here to read the full article>
Mitsubishi Electric Develops EV Motor System With Built-in Silicon Carbide Inverter
Mitsubishi Electric Corp. has developed a prototype electric vehicle (EV) motor system with a built-in silicon carbide inverter. The EV motor system is the smallest of its kind, measuring just half the dimensions of Mitsubishi Electric’s existing motor system that uses an external inverter, and loss is below half that of silicon-based systems.<Click here to read the full article>
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