Apparatus and method for controlling operation of linear compressor

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.