Patent ID: 9605886
Date: 2017-03-28
CPC Classifications: F04B,F04C,F04D,F25B,Y02B

Claim:
1. A compressor system, comprising: a rotary compressor comprising a suction port to receive fluid at a suction pressure, a plurality of axially extending rotors to compress the fluid, and a discharge port to discharge the compressed fluid at a discharge pressure that is higher than the suction pressure; an electric motor configured to receive control signals and drive the plurality of rotors at a commanded speed determined by the received control signals; a controller including a memory connected to the controller, the memory including a starting acceleration limit, a running acceleration limit, a running deceleration limit, and a stopping deceleration limit, the controller configured to: a variable frequency drive configured to receive the control signals and to drive the electric motor according to the command signal profile.