Systems and methods for controlling inducer motor speed
AssigneeEmerson Electric Co.
InventorHarshal Manik PAWAR
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Abstract
Disclosed are exemplary embodiments of systems and methods for controlling inducer motor speed. In an exemplary embodiment, a method includes changing stator voltage of an inducer motor (e.g., by changing a firing angle of a triac, using a transistor, a silicon controlled rectifier or semiconductor controlled rectifier (SCR), other switching device, etc.); determining actual inducer motor speed (e.g., by using a hall effect sensor or other speed sensor, etc.); and after determining the actual inducer motor speed, changing the motor stator voltage (e.g., by changing the firing angle of the triac, etc.) to a value at which the actual inducer motor speed is controllably regulated and/or maintained substantially at a set speed.
Claims20
A method of controlling inducer motor speed, the method comprising:
- changing stator voltage of an inducer motor;
- determining actual inducer motor speed;
- and
- after determining the actual inducer motor speed, changing the stator voltage of the inducer motor to a value at which the actual inducer motor speed is controllably regulated and/or maintained substantially at a set speed substantially without any speed oscillations.
A system for controlling inducer motor speed, the system comprising:
- a switching device configured to be operable for changing stator voltage of an inducer motor;
- a speed sensor configured to be operable for determining actual inducer motor speed;
- and
- a control configured to be operable for changing the stator voltage of the inducer motor to a value at which the actual inducer motor speed is controllably regulated and/or maintained substantially at a set speed substantially without any speed oscillations.
Dependencies are inferred from the claim text.