Magnetic bearing of stator permanent magnet motor with magnetic pole bypasses and bias force adjusting method thereof

A magnetic bearing of a stator permanent magnet motor with magnetic pole bypasses, comprising:

• a magnetic suspension bearing rotor assembled on a motor rotating shaft, a connecting and fastening section with a base section, inter-shoe sections and inter-bridge sections, magnetic poles evenly distributed in a circumferential direction, and magnetic pole bypasses with U-shaped magnetic conduction bridges evenly distributed in a circumferential direction, wherein the base section of the connecting and fastening section is of a ring structure, the inter-shoe sections are of structures evenly distributed on the base section and extending in an axial direction, the inter-bridge sections are of structures evenly distributed on the base section and extending in an axial direction, the magnetic poles are embedded between adjacent inter-shoe sections of the connecting and fastening section, the U-shaped magnetic conduction bridges are embedded between adjacent inter-bridge sections of the connecting and fastening section, the magnetic suspension bearing rotor is embedded in an annular space formed after the magnetic poles are distributed in a circumferential direction, the magnetic poles have circumferential magnetic conduction shoe structures, two adjacent U-shaped magnetic conduction bridges are fit to two sides in a radial direction of a same permanent magnet section extending out of a core, each of the U-shaped magnetic conduction bridges is assembled on the connecting and fastening section and then fit to a circumferential magnetic conduction shoe structure, a circumferential distance between the two adjacent U-shaped magnetic conduction bridges is w2, and a circumferential distance between adjacent circumferential magnetic conduction shoe structures is w1, w1≥w2, or 0.5×w2≤w1<w2.