E-Speed Blower: More Air, Higher Pressure
Addition of a new, higher speed model to the Nidec Servo 97mm x 33mm series of small centrifugal blowers expands the air performance envelope of the versatile E1033 product family to more than 50 CFM with shutoff pressure approaching 5 inwg.
The leakage inductance can be reduced by use of twisted wire; however, the bifilar winding process is difficult enough without adding further complications.
The issue of a skewed current waveform still exists in bifilar winding structures although reduced in significance.
In this case Voff = Vin which reduces the problem, pushing the half speed point back to a more manageable 75% duty cycle.
Again the leakage inductance will add to this by several percent, as it results in incomplete clamping and less than ideal energy recovery.
® UltraFlo is a registered trademark of Nidec Corporation.
Integral Sales, Medway, MA, phone 508-533-7732, is a manufacturer's sales representative for Nidec UltraFlo cooling fans and blowers and Nidec Servo fans.