Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2007-05-18
2011-11-29
Masih, Karen (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S795000, C318S753000
Reexamination Certificate
active
08067920
ABSTRACT:
An apparatus and method for controlling starting of a motor are disclosed. An exciting coil of a motor is excited by using a controller of an electronic refrigerator without having an extra excitation control circuit, to thereby simplify a component construction for controlling exciting of the motor and thus reduce complexity. The present invention includes: a main coil and an auxiliary coil (sub-coil); an exciting coil that generates an excitation current; a refrigerator control unit that outputs a control signal for controlling an application time of the excitation current when started; and a switch unit electrically connected with the exciting coil and supplying power to the exciting coil according to the control signal outputted from the refrigerator control unit.
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Choi Jae-Hak
Kim Jae-Min
Lee Sung-Ho
Park Jin-Soo
Shim Jang-Ho
LG Electronics Inc.
Masih Karen
McKenna Long & Aldridge LLP
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