Analytical Minimization of Interior Permanent Magnet Machine Torque Pulsations by Design of Sculpted Rotor
Open Access
Abstract
A new and efficient analytical optimization methodology for the design of rotor features is developed and used in interior permanent magnet motors (IPM). The analytical methodology is based on an extended winding function theory to include the IPM rotor’s primary and secondary reluctance paths and the non-homogeneous airgap of the rotor sculpt features. The shape and placement of the rotor features, derived from the analytical-based optimization process, show the improvement in torque average and torque ripple of the IPM machine at a fraction of computational effort. The analytical optimization results are validated with finite element analysis via an exhaustive search.Keywords
This publication has 31 references indexed in Scilit:
- Cost-Effective High Torque Density Bi-Magnet Machines Utilizing Rare Earth and Ferrite Permanent MagnetsIEEE Transactions on Energy Conversion, 2020
- A Multi-Physics Design Method for V-Shape Interior Permanent-Magnet Machines Based on Multi-Objective OptimizationIEEE Transactions on Energy Conversion, 2020
- Design of an Improved Dual-Stator Ferrite Magnet Vernier Machine to Replace an Industrial Rare-Earth IPM MachineIEEE Transactions on Energy Conversion, 2019
- Optimization of Air-Gap Profile in Interior Permanent-Magnet Synchronous Motors for Torque Ripple MitigationIEEE Transactions on Transportation Electrification, 2019
- A Novel Analytical Model for No-Load, Slotted, Surface-Mounted PM Machines: Air Gap Flux Density and Cogging TorqueIEEE Transactions on Magnetics, 2014
- A Novel Rotor Design of Interior Permanent-Magnet Synchronous Motors to Cope with Both Maximum Torque and Iron-Loss ReductionIEEE Transactions on Industry Applications, 2013
- Armature-Reaction Magnetic Field Analysis for Interior Permanent Magnet Motor Based on Winding Function TheoryIEEE Transactions on Magnetics, 2012
- Iron and Magnet Losses and Torque Calculation of Interior Permanent Magnet Synchronous Machines Using Magnetic Equivalent CircuitIEEE Transactions on Magnetics, 2010
- Core Losses and Torque Ripple in IPM Machines: Dedicated Modeling and Design TradeoffIEEE Transactions on Industry Applications, 2010
- Design and field-weakening performanceofpermanent-magnet/reluctance motorwith two-part rotorIEE Proceedings - Electric Power Applications, 1998