SOMETHING NEW FOR THE CRANE RETROFIT MARKET: AC OR DC MOTORS CONTROLLED BY THE SAME VARIABLE SPEED DRIVE

摘要

For decades, the ability to control motor speed (frequency), direction and torque was limited to DC motors. Industries of all types optimised processes for the power and control that DC voltage provided. Entire segments of industry were designed around these processes and they have served industry very well for years. We might say to ourselves, "why change?" or "what I have still works fine". With today's motivation and incentives for clean, efficient energy, modern industry requires more from each of us- more responsibility, more reliability, and more functionality; all on the same budget.