Electric propulsion motor for marine vehicles

Details Electric propulsion motor for marine vehicles Electric propulsion motor for marine vehicles

1991-09-18

1993-07-20

Ro, Bentsu

Electrical generator or motor structure

Dynamoelectric

Rotary

310112, 318432, 318538, H02K 122, B60L 1100

Patent

active

052296776

ABSTRACT:
An improved electric propulsion motor for marine vehicles. The motor has an axial gap design with a disk-shaped rotor and two disk-shaped stators. Within the large, open diameter of the motor a sound isolation coupling is disposed between two annular plates that connect the rotor to the propeller shaft. Circumferential thrust bearings counter and distribute electrical and mechanical forces in the motor to maintain the position of the rotor relative to the stators. A journal bearing supports the rotor. Noise reduction is greatly enhanced by the implementation of staggered stators, skewed stator slots, skewed field poles and a current control system that compensates for torque pertubations that are a repeatable function of shaft angle.

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