Controller and method for adaptive speed control of a fan array
AssigneeSiemens Industry, Inc.
InventorJibo Liu
Life of this patent
Estimating the term…
Abstract
There is described controllers, methods, and non-transitory computer readable medium for adaptive speed control of a fan array of an air handling unit. A fan speed command for the fan array is identified. The fan speed command is scaled based on a floating maximum fan speed. A fan error of at least one fan of the fan array is detected. The floating maximum fan speed is adjusted in response to detecting the fan error. The fan speed command is rescaled based on the adjusted floating maximum fan speed. The fan speed command is provided to each fan of the fan array.
Claims20
A method for adaptive speed control of a fan array of an air handling unit, the method comprising:
- identifying a fan speed command for the fan array;
- scaling the fan speed command based on a floating maximum fan speed;
- detecting a fan error of at least one fan of the fan array;
- adjusting the floating maximum fan speed in response to detecting the fan error;
- rescaling the fan speed command based on the adjusted floating maximum fan speed;
- and
- providing the fan speed command to each fan of the fan array.
A controller for adaptive speed control of a fan array of an air handling unit comprising:
- a fault detection and diagnostic module configured to detect a fan error of at least one fan of the fan array;
- and
- a fan speed control module configured to identify a fan speed command for the fan array, scale the fan speed command based on a floating maximum fan speed, adjust the floating maximum fan speed in response to detecting the fan error, rescale the fan speed command based on the adjusted floating maximum fan speed, and provide the fan speed command to each fan of the fan array.
A non-transitory computer readable medium including executable instructions which, when executed, causes at least one processor for adaptive speed control of a fan array of an air handling unit by:
- identifying a fan speed command for the fan array;
- scaling the fan speed command based on a floating maximum fan speed;
- detecting a fan error of at least one fan of the fan array;
- adjusting the floating maximum fan speed in response to detecting the fan error;
- rescaling the fan speed command based on the adjusted floating maximum fan speed;
- and
- providing the fan speed command to each fan of the fan array.
Dependencies are inferred from the claim text.