| 摘要 |
<p>The objective of the present invention is, in a permanent magnet synchronous machine using a permanent magnet with a residual magnetic flux density of 0.6 T or less, and a drive system using the permanent magnet synchronous machine, to allow reluctance torque to be effectively used, thus improving torque and efficiency. To this end, in a permanent magnet synchronous machine comprising a rotor having a permanent magnet with a residual magnetic flux density of 0.6 T or less arranged to constitute a plurality of poles in the rotor and a stator arranged with a prescribed gap with respect to the rotor, interlinkage fluxΨp (WB) for one phase of a stator coil generated by the permanent magnet and direct-axis inductance Ld (H) and quadrature-axis inductance Lq (H) when energizing the coil with a current effective value Irms (Arms), satisfy the following relationship:</p> |
