Analysis and Design of Low-Speed Direct-Driven Permanent-Magnet Submersible Motor

Shan Bai, Zhixiang Chang

Abstract


This paper briefly introduces the structure of the low-speed permanent-magnet submersible motor and analyzes the relationship between the inner diameter of the stator and the copper loss of the motor after determination of the outer diameter of the stator and the length of the motor, in order to obtain the size of the inner diameter of the stator at the minimum copper loss. This paper also analyzes the relationship between the length of the magnetization direction of the permanent magnet and the size of the phase current, designs a set of 16-pole and 18-slot permanent-magnet submersible motor by the use of the above relationship and calculates the air-gap magnetic field, no-load counter electromotive force, electromagnetic torque and other properties by the use of the finite element method in order to verify the reasonableness of the motor design.

Keywords


permanent-magnet submersible motor; low-speed direct-driven; fractional slot concentrated winding; electromagnetic performance


DOI
10.12783/dtcse/iccae2016/7217

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