Westinghouse Air Brake Technologies Corporation
ROTARY MACHINE CONTROL SYSTEM

Abstract:

A rotary machine includes a stator and a rotor that rotates relative to the stator in response to flow of a fluid by or through the rotor. The rotary machine also includes a control circuit configured to determine one or more operational characteristics of the electric machine. The one or more operational characteristics are indicative of a flow of the fluid or a load placed on the rotary machine, the control circuit configured to apply control signals to control one or more switches of the rotary machine to induce a magnetic field in the rotary machine that resists a force imparted on a rotor of the rotary machine from the flow of the fluid. The control signals control the one or more switches of the rotary machine to control a speed at which the rotor rotates.