In this article, a thermal semi-analytical model (T-SAM) considering water-cooled structure is proposed for the first time, which is based on harmonic modeling (HM) technology and takes into account material inhomogeneities, that is, different thermal conductivities of the motor parts. Then, the calculation process of steady-state heat distribution of the water-cooled permanent magnet (PM) motor is proposed by combining with the electromagnetic finite element method (FEM) and computational fluid dynamic (CFD). The results obtained from thermal FEM serve as a reference for comparison with the outcomes of T-SAM. Remarkably, T-SAM exhibits a high concordance with thermal FEM and a noteworthy reduction in computational time—only a quarter of that required by thermal FEM. Validation of T-SAM is further demonstrated through experimental results obtained from a prototype with a surface-attached cooling structure (SACS). Notably, the T-SAM has the potential application for other types of PM electrical motors, such as slotted surface-mounted, slotted surface-inset, or slotted spoke-type PM motors.
Two-Dimensional Semi-Analytical Steady-State Thermal Model of Permanent Magnet Machines With Water-Cooled Structure
IEEE Transactions on Transportation Electrification ; 10 , 4 ; 9226-9235
2024-12-01
15223335 byte
Article (Journal)
Electronic Resource
English
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