CPC H02K 1/276 (2013.01) [H02K 2213/03 (2013.01)] | 18 Claims |
1. A motor rotor structure, comprising: a rotor core, wherein:
at least two first permanent magnet slots are disposed in the rotor core in a circumferential direction;
at least one second permanent magnet slot is disposed between every two adjacent first permanent magnet slots ; each of the first permanent magnet slots and an adjacent second permanent magnet slot thereof are spaced a preset distance apart; and
between two kinds of permanent magnets having different coercivities, a first kind of permanent magnet is mounted in each of the first permanent magnet slots , and a second kind of permanent magnet is mounted in the second permanent magnet slot;
when identical polarities of adjacent two kinds of permanent magnets having different coercivities face each other, the rotor core is in a more-magnetic-pole state; and
when contrary polarities of adjacent two kinds of permanent magnets having different coercivities face each other, the rotor core is in a fewer-magnetic-pole state.
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