System and method for reducing motoring time in a turbomachine based on shaft deflection

A system, comprising:

• a plurality of sensing devices secured circumferentially around and onto a shaft of a turbomachine, the plurality of sensing devices configured to sense a parameter of the shaft in a plurality of circumferentially spaced locations;
• a rotating antenna arranged around the shaft, wherein the plurality of sensing devices is communicatively coupled to the rotating antenna;
• a plurality of stationary antennas on the same or opposing sides of the shaft and aligned with the rotating antenna or intentionally offset from the rotating antenna to vary a magnitude of the parameter, wherein an airgap is defined between the rotating antenna and the plurality of stationary antennas;
• and
• a controller communicatively coupled to the plurality of sensing devices, the controller comprising at least one processor, the at least one processor configured to perform a plurality of operations, the plurality of operations comprising:
• communicating one or more signals to the plurality of sensing devices across the airgap to excite the plurality of sensing devices;
• determining a magnitude of a deflection in the shaft as a function of the sensed parameter of the shaft in the plurality of circumferentially spaced locations;
• and
• adjusting a startup sequence or a motoring sequence of the turbomachine based on the magnitude of the deflection.

A controller communicatively coupled to a plurality of sensing devices positioned on a shaft of a turbomachine and a rotating antenna positioned around the shaft, the rotating antenna being aligned with a stationary antenna in a radial direction, wherein an airgap is defined between the rotating antenna and the stationary antenna, the controller configured comprising a processor configured to perform a plurality of operations, the plurality of operations comprising:

• communicating one or more signals to the plurality of sensing devices across the airgap to excite the plurality of sensing devices;
• receiving a parameter of the shaft in a plurality of circumferentially spaced locations from the excited plurality of sensing devices;
• determining a magnitude of a deflection in the shaft as a function of the sensed parameter of the shaft in the plurality of circumferentially spaced locations;
• and
• adjusting a startup sequence or a motoring sequence of the turbomachine based on the magnitude of the deflection.