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Linear compressor control circuit to control frequency based on the piston position of the linear compressor

  • US 5,947,693 A
  • Filed: 05/01/1997
  • Issued: 09/07/1999
  • Est. Priority Date: 05/08/1996
  • Status: Expired due to Term
First Claim
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1. An apparatus for operating a linear compressor including a reciprocating piston, the apparatus comprising:

  • a rectifying and filtering unit for converting an alternating current into a direct current;

    an inverter for inverting the direct current outputted from the rectifying and filtering unit into an alternating current of a desired frequency for operating the linear compressor;

    a position sensor for detecting a position of the piston of the linear compressor and outputting a position signal in accordance with said detection;

    a current detector for detecting a current running through the linear compressor and outputting a current signal in accordance with said detection; and

    a controller for receiving the current signal outputted from the current detector and the position signal outputted from the position sensor and outputting a pulse width modulating signal to control the inverter.

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