Machine design

Apr 2025 – Jun 2025

Reconfiguration of a Three-Phase Machine into a Five-Phase Machine

Reconstructed the original machine geometry in Ansys Motor-CAD, designed a five-phase fractional-slot winding, optimized conductor sharing and slot fill, and rewound the stator for multiphase-drive experiments.

Electric MachinesHardwareAnsys Motor-CADStar of SlotsRewinding
Rewound stator used to convert a conventional three-phase machine into a five-phase experimental machine.
Rewound stator used to convert a conventional three-phase machine into a five-phase experimental machine.
Starting machine
Three-phase induction
Reconfigured winding
Five-phase
Modeling
Ansys Motor-CAD
Period
Apr-Jun 2025
On this page

01 / Context

Overview

A conventional three-phase induction machine was reverse-engineered and converted into a five-phase machine to create a dedicated multiphase-drive research platform. The work started with geometry extraction and a baseline electromagnetic model in Ansys Motor-CAD, then moved to winding synthesis and finally to physical stator rewinding.

The five-phase winding was designed from the available slot/pole combination using star-of-slots reasoning and fractional-slot constraints. Conductor allocation between neighboring slots was adjusted to improve slot-fill distribution while preserving the intended phase displacement and practical manufacturability.

My work

  • Reconstructed the machine geometry and generated a baseline Motor-CAD model.
  • Designed the five-phase fractional-slot winding and verified the winding layout.
  • Optimized conductor sharing and slot fill before physical rewinding.
  • Integrated the rewound machine into the experimental drive test bench.

02 / Approach

Methods & diagrams

01

Machine Reconstruction

Mechanical and electromagnetic geometry was extracted from the original motor and reproduced in Motor-CAD.

02

Winding Synthesis

A five-phase winding layout was developed from slot/pole geometry using star-of-slots and phase-belt constraints.

03

Experimental Rewinding

The stator was physically rewound and prepared for operation with the five-phase inverter and controller platform.

03 / Evidence

Results & gallery

Project figures and laboratory photographs. Open a figure to inspect the detail; vector PDFs are available for the control diagrams.

Motor-CAD stator/rotor representation.
Motor-CAD stator/rotor representation.
Five-phase rewound stator.
Five-phase rewound stator.
Reconfigured machine installed on the drive platform with mechanical load.
Reconfigured machine installed on the drive platform with mechanical load.

Findings

  • The project portfolio documents the machine geometry, five-phase winding layout, and physical stator rewinding.
  • The project connects winding design with the experimental multiphase-drive work.

Scope & limitations

The documented scope is winding reconfiguration and prototype development. A complete before/after efficiency and thermal comparison is not included.

Sources & related reading

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Project figure