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How robots enhance lean manufacturing environments
Traditionally, robots have not played a prominent role in the implementation of lean strategies. However, due to their repeatability, speed, accuracy and flexibility, the role of robots in lean...
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Power protection – reliable voltage protection of sensitive loads
Industrial automation has reached very high levels of sophistication. Plants, including automobile manufacturing units, chemical factories and semiconductor fabs, now house some very advanced...
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Bus communication with circuit breakers
Circuit-breaker manufacturers have been driven to implement dialogue interfaces for bus communication with control devices such as PLC, PC or SCADA due to the ever growing use of automation and...
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Direct torque control in AC drive technology
What direct torque control (DTC) is, why and how it has evolved, the basic theory behind its success and the features and benefits of this new technology… (more)Filed under: Vector Tagged: ABB, AC...
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A motor control technique for all seasons
Variable-speed drives (VSDs) have enabled unprecedented performance in electric motors and delivered dramatic energy savings by matching motor speed and torque to the driven load requirements…...
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Power quality – problems and solutions
Modern society has become dependent on a continuous supply of clean electrical power. But the power supplied by the grid is not always clean, or continuous, and measures have to be taken to mitigate...
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Protection against loss of excitation in generators
The direct field current supplied by the excitation system excites the field winding to establish the rotor flux and the internal voltage in a synchronous generator. When a generator loses its...
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Beyond the smart grid: Global impact report overview
Experts have discussed theoretical smart grid models for over a decade, but until now there has been no way to benchmark results globally. Ventyx and ABB selected VaasaETT to develop a smart grid...
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Ride-through testing of wind turbine converters
The testing of low-voltage, ride-through capability of wind turbine converters has recently been standardised in the 2nd edition of IEC 61400-21. Thus, testing the converters in the factory is...
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A theoretical outline of selectivity
Selecting the protection system for electrical installations is fundamental to correct economical and functional service and to reduce problems caused by abnormal service conditions or actual faults…...
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