MUTUAL INDUCTANCE CONTACTLESS STARTER - CHANGSHU TIANYIN ELECTROMECHAN

Title:

MUTUAL INDUCTANCE CONTACTLESS STARTER

Document Type and Number:

WIPO Patent Application WO/2006/076833

Kind Code:

A1

Abstract:

A mutual inductance contactless starter for a single-phase AC motor is mainly applied to the starting of a compressor motor with starting capacitor, meanwhile it can also be applied to the starting of a normal single phase AC motor. It includes a current inductor L including two primary windings and a secondary winding, a trigger capacitor C_o, a triac T, and a PTC thermistor Rt. Through the employment of current signal relating to the sampling of the current inductor, the present invention could effectively control the heat loss of the current sampling system, whose power loss may be as low as milliwatt level, that is 'zero power loss' single-phase AC motor starter, so that the energy saving effïciency is improved significantly. Meanwhile, the circuit is simple, and the quantity of the components is few which results in reliability, so that the reliability of the motor starting system is improved while the starting function of the motor is maintained.

Inventors:

ZHAO YUNWEN (CN)

Application Number:

PCT/CN2005/000583

Publication Date:

July 27, 2006

Filing Date:

April 27, 2005

Export Citation:

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Assignee:

CHANGSHU TIANYIN ELECTROMECHAN (CN)
ZHAO YUNWEN (CN)

International Classes:

H02P1/42; H02P1/44

Foreign References:

CN2234146Y	1996-08-28
US3916274A	1975-10-28
CN2412319Y	2000-12-27
CN2239677Y	1996-11-06

Other References: