Permanent -magnet machine rotor and PMSM

The utility model provides a permanent -magnet machine rotor and PMSM. This permanent -magnet machine rotor includes: rotor core, the magnetic main utmost point permanent magnet in tangential, main utmost point permanent magnet is followed rotor core's radial direction setting, the quantity of main utmost point permanent magnet equals with PMSM's number of poles, main utmost point permanent magnet is followed rotor core's circumference direction evenly distributed, and arbitrary adjacent two the proximate surperficial magnetic pole of main utmost point permanent magnet is the same, and the magnetic supplementary permanent magnet in tangential, supplementary permanent magnet is followed rotor core's radial direction setting, just supplementary permanent magnet is located arbitrary adjacent two between the main utmost point permanent magnet to reach the operating point of improving main utmost point permanent magnet, and then make the anti demagnetization ability of winner's utmost point permanent magnet obtain the improvement, reduce the purpose of the risk of demagnetization.