Wimple. At what RPM does the compressor run, nominally?
Just as an aside PWM is Pulse Width Modulation which describes the type of Variable Speed Drive (VSD)also refered to as a VFD Variable Frequency Drive.
Can someone give a comparitive analysis between Slip Ring Induction motor drives c/w resistors and Squiral Cage motors drives with VFDs applied to a i.8 kM long 1.8 m wide conveyor with four 2000 kW drive motors. What are the advantages and disadvantages of each system?
