DC drive technology: Dynamic, rugged and cost effective

Depending on the particular application, DC drives are often the most favorably-priced drive solution with many advantages when it comes to reliability, operator friendliness and operating behavior. Just as before, there are some compelling technical and economic reasons for still using DC drives in many industrial areas:

• Favorably-priced four-quadrant operation
• Continuous operation at low speeds
• Full torque even at low speeds
• Low torque ripple even at low speeds
• High starting torque
• Wide speed control range with constant power
• Low space requirement and low weight
• Reliability
• Low amount of heat dissipated in the switchgear room and therefore a very high efficiency

Main applications for DC drives include:

• Rolling mill drives
• Wire-drawing machines
• Extruders and kneaders
• Presses
• Elevators and cranes
• Cableways and lifts
• Mine hoists
• Test stand drives