Apparatus and method for controlling operation of...

Details Apparatus and method for controlling operation of... Apparatus and method for controlling operation of...

2008-07-22

2008-07-22

Duda, Rina I (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S801000, C318S805000, C417S044100, C417S045000

Reexamination Certificate

active

07402977

ABSTRACT:
An apparatus for controlling an operation of a reciprocating motor compressor includes a current integrator for integrating an alternating current applied to a motor of the compressor during each one cycle thereof; and a controller for differently controlling a firing angle of a triac during the positive phase and the firing angle of the triac during the negative phase of the AC voltage applied to the motor based on the integrated value of the current. A loss in the motor can be reduced by avoiding presence of a DC component in the current applied to the motor of the compressor.

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patent: 1356472 (2002-07-01), None

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