Engineering tools for electric motor design and testing.

Winding layouts, slot fill, DCR, working points, spectra and efficiency maps — the calculations motor engineers redo every week, without a spreadsheet. Everything runs locally in your browser; no data is uploaded.

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Design

Size the winding and the slot

Working Point Explorer

Solve the stable working point of a motor and sweep design parameters.

DCR Calculator

Convert between winding turns, wire diameter, DCR and slot fill factor. Quick calibration or full geometry mode with a wire-diameter sweep table.

Winding Designer

Pick poles, slots and layers to get the winding layout diagram and fundamental winding factor. Integer- and fractional-slot windings.

Slot Packing Viewer

See how turns pack into a stator slot: parametric or custom slot shape, liner offset, double-layer needle channel, and the largest standard wire that fits a given turn count.

Test & analysis

Make sense of bench data

Efficiency Map

Generate a contour efficiency map from speed / torque / efficiency data. PNG export.

FFT Analyser

Spectrum analysis with harmonic extraction and THD. Flat-top / Hann / Hamming windows.

Production

Quality and cost

CPK Analysis

Process capability (Cp / Cpk) from a single measured parameter. IQR outlier removal, USL/LSL, histogram with sigma lines, PNG export.

Cost Calculator

Estimate silicon steel / copper / magnet or rotor material cost from geometry, slot/pole count and winding data. Supports PMSM, EESM and induction motors.