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AssigneeEmerson Electric Co.
InventorsJoseph G. Marcinkiewicz, Arthur E. Woodward, Prakash B. Shahi, Mark E. Carrier, Michael I. Henderson
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A heating, ventilating and/or air conditioning (HVAC) system includes a system controller, a motor controller, an air-moving component, and a permanent magnet motor having a stationary assembly, a rotatable assembly in magnetic coupling relation to the stationary assembly, and a shaft coupled to the air-moving component. The motor controller is configured for performing sinewave commutation in response to one or more control signals received from the system controller to produce continuous phase currents in the permanent magnet motor for driving the air-moving component. By using sinewave commutation (in contrast to square wave commutation), the noise and vibration produced by the HVAC system is markedly reduced.
A heating, ventilating and/or air conditioning (HVAC) system comprising a system controller, a motor controller, an air-moving component, and a permanent magnet motor having a stationary assembly, a rotatable assembly in magnetic coupling relation to the stationary assembly, and a shaft coupled to the air-moving component, wherein the motor controller is configured for performing sinewave commutation in response to one or more control signals received from the system controller to produce continuous phase currents in the permanent magnet motor for driving the air-moving component.
A blower assembly for a heating, ventilating and/or air conditioning (HVAC) system, the blower assembly comprising a motor controller, a blower, and a permanent magnet motor having a stationary assembly, a rotatable assembly in magnetic coupling relation to the stationary assembly, and a shaft coupled to the blower, wherein the motor controller is configured for performing sinewave commutation in response to one or more control signals received from a system controller to produce continuous phase currents in the permanent magnet motor for driving the blower.
A method for driving an air-moving component of a heating, ventilating and/or air conditioning (HVAC) system in response to a control signal, the HVAC system including a permanent magnet motor having a stationary assembly and a rotatable assembly in magnetic coupling relation to the stationary assembly, said rotatable assembly coupled in driving relation to the air-moving component, the method comprising receiving at least one control signal from a system controller, and performing sinewave commutation in response to the at least one control signal received from the system controller to produce continuous currents in the permanent magnet motor for driving said air-moving component.
Dependencies are inferred from the claim text.