motor elétrico de corrente contínua sem escova, e, sistema de direção elétrica

摘要

1 / 1 abstract brushless direct current electric motor and electric power steering system a brushless direct current electric motor includes a first sub-motor (20) and a second sub-motor (30). the first sub-motor and the second sub-motor share a common rotor 5 (40), and each comprises an independent stator. the stators of each sub-motor comprises a plurality of teeth (t, t’) and a plurality of windings (c, c’). the teeth of the first sub-motor and the teeth of the second sub-motor are interleavingly arranged in a circumferential direction or arranged side by side in an axial direction. the first sub- motor and the second sub-motor are configured to cooperatively work as a single 10 electric motor to output a normal power. when one of the sub-motors breaks down, the other sub-motor can be operated independently to enhance reliability and safety of the brushless direct current electric motor. 15 figure 2