Permanent magnet motor (PMM)


PCM believes Permanent Magnet Motor Driveheads offer some distinct benefits and we are currently working on several options in order to propose strong technical and commercial solutions.


Permanent Magnet Motor direct drive heads are lighter, safer, quieter, more energy efficient than any other top drive motor on the market. Simply designed to include minimal components, they eliminate sheaves, gearbox, frames and pumps.


Solution conceived to reduce significantly your OPEX and ensure safe operations.

  • High efficiency
  • Low maintenance requirements
  • Failsafe resistive braking system
  • Light and easy to install




Successful testing on our test bench

Several tests had been done on PCM’s advanced drivehead test bench in France with ongoing pilots under deployment in the field

  • Great capacity to handle torque and variation at any speed (from 30rpm to high speed)
  • Smooth run at any conditions (motor remain cold +5°C / low noise / no vibration)
  • Controlled backspin  thanks to  energy dissipation of the resistive load
  • Proven energy consumption reduction (10-35% depending on speed & motor load)


Forward tests

  • Run motor low speed (30 RPM)  & full speed (250RPM )
  • Running with Torque 25/50/75/100/150%
  • Run motor with test with 4 / 10 / 15 / 20T axial load
  • Start motor with torque 25/50/75/100/150%
  • Fast change of speed / torque
  • Over limit test (up to VSD trip) for over voltage / over torque


Backward tests

  • 400 / 800 /1200/1600Nm
  • Over torque test (2000 / 2300Nm)
  • Over torque & re-catch brake


Energy consumption tests

  • Comparison of energy consume with 100HP 6P B&P DH
  • Full speed @ 25% 50% 75% 100% of load