Apparatus and method for controlling operation of linear compressor
First Claim
1. A method for controlling an operation of a linear compressor comprising the steps of:
- outputting a stroke command value according to user'"'"'s input information;
outputting a current and a voltage generated when the linear compressor 32 is driven by the stroke voltage;
receiving the detected current and the voltage and computing a displacement;
receiving the displacement and the detected current, multiplying the current and the displacement together, integrating the multiplied value, and outputting the integrated value as a work operation value;
receiving the work operation value (W), comparing it with a previous work operation value (W) and outputting a variation amount of the work operation value;
outputting a switching control signal having a duty ratio of the current time point if the variation amount of the work operation value is more than a predetermined value; and
switching an AC power with the triac 31 according to the switching control signal, applying a stroke voltage to the linear compressor 32, and driving the compressor.
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Accused Products
Abstract
An apparatus for controlling an operation of a linear compressor includes: a sensorless circuit unit for detecting a current and a voltage applied to a linear compressor and outputting a work operation value corresponding to them; a stroke controller for receiving the work operation value and outputting a switching control signal corresponding to a variation amount of the work operation value; and an electric circuit unit for receiving the switching control signal from the stroke controller and outputting a certain voltage to the linear compressor, accordingly, a TDC of the piston in consideration of an error due to the nonlinear characteristic can be controlled, and thus, an operation efficiency of the linear compressor can be improved.
79 Citations
3 Claims
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1. A method for controlling an operation of a linear compressor comprising the steps of:
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outputting a stroke command value according to user'"'"'s input information;
outputting a current and a voltage generated when the linear compressor 32 is driven by the stroke voltage;
receiving the detected current and the voltage and computing a displacement;
receiving the displacement and the detected current, multiplying the current and the displacement together, integrating the multiplied value, and outputting the integrated value as a work operation value;
receiving the work operation value (W), comparing it with a previous work operation value (W) and outputting a variation amount of the work operation value;
outputting a switching control signal having a duty ratio of the current time point if the variation amount of the work operation value is more than a predetermined value; and
switching an AC power with the triac 31 according to the switching control signal, applying a stroke voltage to the linear compressor 32, and driving the compressor. - View Dependent Claims (2, 3)
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Specification