Permanent magnet rotary motor

Details Permanent magnet rotary motor Permanent magnet rotary motor

2007-10-02

2007-10-02

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156530, C310S156030, C310S056000, C310S254100

Reexamination Certificate

active

11204518

ABSTRACT:
There is provided a permanent magnet rotary motor in which manufacture of a stator core is facilitated. The permanent magnet rotary motor includes P rotor magnetic pole sections and N slots. In this permanent magnet rotary motor, a least common multiple LCM (P, N) is set to be different from a least common multiple LCM (P/2, N), and an exciting winding is wound on each of N stator magnetic pole sections arranged in a peripheral direction so that a 120° current phase difference is obtained. N/2 divided cores13A,13C,13E,13G,13I, and13K of a first divided core group and N/2 divided cores13B,13D,13F,13H,13J, and13L of a second divided core group constitute a stator core2. Cross-sectional shapes of the divided cores in the first and second divided core groups arranged on both sides of each of slots9A to9L taken in a direction perpendicular to an axis line passing through the center of a rotor3are shaped to be axisymmetrical with respect to a virtual line PL passing through the middle of an opening portion9aor9bof each slot and the axis line of the rotor3. An open angle Wa of an opening portion9ais set to be smaller than an open angle Wb of an opening portion9b.

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WO 03/105321 A1, Electric Motor, Publication Date: Dec. 18, 2003.

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