| 摘要 |
The machine has a permanent magnet rotor (1) and a stator winding supplied via current converters to provide a basic energisation field (BE) and an auxiliary longitudinal magnetic field (BL). The latter is added to, or subtracted from the basic energisation field (BE) along the longitudinal pole axis. The rotor (1) is divided into at least two coaxial sections (2,3), use of which incorporates the permanent magnets, the other made of a soft magnetic material for conduction of the auxiliary longitudinal magnetic field produced by the stator winding. This prov ides spatial separation to superposition of the two fields (BE,BL).
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