Mover design and characteristics analysis of 2DoFDDIM

Abstract

Two degree-of-freedom direct drive induction motor (2DoFDDIM), capable of rotary, linear and helical motion, has widespread application. A new mover structure is proposed, which is made from a hollow cylinder with copper cast in the axial slots and the circumferential slots on its surface. Then 3D finite element models of 2DoFDDIM are used to determine the performances of rotary, linear and helical motion developed by the motor. The results show that the new mover has a great improvement on the motor performances of all modes of motion compared to the initial mover. The researches on mover structure and characteristics of 2DoFDDIM present a new path of optimization on 2DoF induction motor.

Equivalent Circuit Parameter Calculations and Characteristics Analysis of 2-DoF Direct Drive Induction Motor with a Slotted Solid Rotor

“…2019, 9, x FOR PEER REVIEW 4 of 13 2DoFDDIM, in the circumferential slot between the two neighboring teeth in the axial direction, the induction current density is expressed by Ref. [9].…”

“…In Ref. [9], a novel slotted solid rotor (SSR), which is slotted along the axial and circumferential direction on a smooth solid mover surface first and copper is cast in the slots was applied to the 2DoFDDIM, and the characteristics were analyzed through FEM. However, the equivalent circuit model (ECM) was not provided.…”