Driver of electric compressor

Details Driver of electric compressor Driver of electric compressor

2006-08-01

2006-08-01

Duda, Rina (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S254100, C318S430000, C318S432000, C318S434000

Reexamination Certificate

active

07084598

ABSTRACT:
A compressor driver for a compressor is provided, wherein at the start of the compressor, a phase of the current flowing in the motor is controlled to be ahead of an induction voltage, then the advancement of the phase is controlled to decrease. Under an unstable condition to detect a position, such as at the start under pressure-difference, the foregoing control allows the phase to advance up to the current-phase where the max. torque can be produced, thereby drawing the instantaneous max. torque of the motor for starting the compressor. Then the control reduces the advancement for obtaining a stable operation.

REFERENCES:
patent: 5455885 (1995-10-01), Cameron
patent: 5780983 (1998-07-01), Shinkawa et al.
patent: 5886486 (1999-03-01), Jeong et al.
patent: 6034494 (2000-03-01), Kitamine et al.
patent: 6078158 (2000-06-01), Heeren et al.
patent: 6650073 (2003-11-01), Kawabata
patent: 6-156055 (1994-06-01), None
patent: 10-47255 (1998-02-01), None

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