| 摘要 |
An interior permanent magnet rotary motor of the present invention has N slots and P permanent magnet magnetic pole sections, (2/3<=P/N<= 43/45). Po is an irreducible fraction Po/No of the P/N is an odd number, and a pole arc ratio psi<SUB>p </SUB>equals thetapp/thetap. thetapp is an angle between two line segments assumed for a pair of flux barriers, each of which connects the center of a rotor core and one of corners of the section of each flux barrier that is closest to the surface of the rotor core. thetap is an angle obtained by dividing 360° by the number of the permanent magnet pole sections. The pole arc ratio indicated by Psi<SUB>p </SUB>(0<4n<1) is determined by the expression of Psi<SUB>p</SUB>=2mP/N+P/4LCM (P, N)-2n, where LCM (P, N) is the least common multiple between P and N, m and n are arbitrary natural numbers.
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