Variable inlet guide vane apparatus and systems and methods for calibrating the same

A compressor comprising:

• a compressor housing including an inlet;
• a driveshaft rotatably supported within the compressor housing;
• an impeller connected to the driveshaft and operable to impart kinetic energy to incoming refrigerant gas upon rotation of the driveshaft;
• an inlet guide vane apparatus connected to the compressor housing and disposed upstream from the impeller, the inlet guide vane apparatus comprising:
• a housing defining a fluid flow passageway;
• a plurality of guide vanes connected to the housing, wherein each of the guide vanes is rotatable relative to the housing;
• a motor operably connected to at least one of the plurality of guide vanes;
• a sensor configured to detect a rotational position of at least one of the plurality of guide vanes;
• and
• a controller connected to the sensor and the motor, the controller comprising at least one memory and at least one processor, wherein the controller is configured to:
• identify a first rotational stop position of the guide vane based on feedback from the sensor;
• identify a second rotational stop position of the guide vane based on feedback from the sensor;
• and
• calibrate a neutral position of the guide vane based on the determined first and second rotational stop positions of the guide vane.

A method of calibrating an inlet guide vane apparatus, the method comprising:

• identifying a first rotational stop position of a guide vane based on feedback from a sensor;
• identifying a second rotational stop position of the guide vane based on feedback from the sensor;
• and
• calibrating a neutral position of the guide vane based on the determined first and second rotational stop positions of the guide vane.