Rotary machine including active magnetic bearing

A rotary machine comprising:

• a rotor;
• a drive component coupled to said rotor and configured to induce rotation of said rotor;
• at least one electromagnetic beating configured to support a portion of said rotor;
• at least one sensor configured to detect an operating characteristic of said rotary machine;
• at least one fluid flow control device;
• and
• a controller coupled to said at least one electromagnetic bearing, said at least one sensor, and said at least one fluid flow control device, said controller configured to regulate said at least one electromagnetic bearing and said at least one fluid flow control device, said controller comprising:
• a processor;
• and
• a memory coupled to said processor, said memory configured to store operating modes of said controller, the operating modes including a normal operating mode and a fault tolerant operating mode, wherein said controller is further configured to:
• receive a signal from said at least one sensor and determine an operating state of said rotary machine based on the signal;
• switch between the normal operating mode and the fault tolerant operating mode based on the determined operating state of said rotary machine;
• regulate at least one of a magnetic force and a position of the at least one electromagnetic bearing and at least one of a position and an opening of the at least one fluid flow control device;
• and
• operate the rotary machine at a peak efficiency line during the fault tolerant operating mode based on regulation of at least one of the magnetic force and the position of the at least one electromagnetic bearing during and at least one of the position and the opening of the at least one fluid flow control device.