A high torque density permanent magnet motor for oil pumping unit

作者:Lu Q F*; Fan C Z; Ye Y Y; Zhu Z Q
来源:Journal of Applied Physics, 2008, 103(7): 07F108.
DOI:10.1063/1.2831330

摘要

A low speed, high torque density compound permanent magnet (PM) motor is developed for oil pumping unit to reduce energy consumption. It consists of dual axial-field PM motors and an outer rotor PM motor. In order to account for the influence of skew, a multislice two-dimensional finite element method is employed to analyze the air gap field distribution, back-emf, cogging torque, and electromagnetic torque. Predicted results are validated experimentally.