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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2015/064993
Kind Code:
The present invention relates to a BLDC motor which maximizes efficiency by induced polarization and, more particularly, to an induced polarization BLDC motor which subjects the magnetic field plane of a stator to induced polarization so as to double the magneto-motive force (active energy) thereof, and subjects the magnetic field plane of a rotor to magnetic flux concentration, so as to double the magnetic force (passive energy) thereof, thereby maximizing the torque and efficiency of a motor where two energies are synthesized. The stator comprises 2n winding slots and 2n induced polarization slits on a silicon steel sheet stacked core, and only n slots have distributed winding in independent and multiple phases. The rotor comprises planar magnets, of which both surfaces are magnetized, radially embedded on the silicon steel sheet stacked core. A commutation encoder, which is cup-shaped, is divided into a sensing region and a non-sensing region, and is installed on the outside of one side of a shaft. Two optical sensors are installed in each phase, and are connected to an H-bridge of each phase so as to form a circuit. A switching stage is formed by installing one H-bridge in each phase. Thus, in the case of applying a direct current to the motor, each phase is independently switched and the motor is started and rotated, wherein the rotation direction of the motor is determined by Fleming's left hand rule.

LEE, I Soo (1F 34, Gangnam-daero 62-gilGangnam-gu, Seoul 135-937, 135-937, KR)
Application Number:
Publication Date:
May 07, 2015
Filing Date:
October 28, 2014
Export Citation:
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LEE, I Soo (1F 34, Gangnam-daero 62-gilGangnam-gu, Seoul 135-937, 135-937, KR)
International Classes:
H02K3/48; H02K1/27; H02K11/00; H02K23/00
Foreign References:
Attorney, Agent or Firm:
SHIN WOO PATENT & LAW FIRM (2F 15-4, Teheran-ro 25 gilGangnam-gu, Seoul 135-910, 135-910, KR)
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