Winding Calculator

Winding factors, slot/pole combinations and back-EMF harmonics.

🔌 Winding Calculator

Electric motor winding design with slot fill, resistance, and thermal analysis

Motor Specifications

Rated Power

Rated Voltage

Phases

Poles

Slots

Speed

RPM

Efficiency

Power Factor

Stator Geometry

Stator OD

Stator ID

Stack Length

Slot Depth

Slot Width

Air Gap

Slot Shape

Winding Configuration

Winding Pattern

Conductor Type

Insulation Class

Turns/Coil

Parallel Paths

Wire Gauge (AWG)

Max Current Density

A/mm²

Winding Results

Phase Current

15.72A

Current Density

19.1A/mm²

Turns/Phase

80.00

Winding Factor

0.433

Slot Fill

43.1%

Target Fill

20.3%

Electrical Parameters

R @ 20°C

461334.8mΩ

R @ Temp

310660385.8mΩ

Inductance

0.02mH

Copper Loss

342145.6W

Thermal Analysis

Ambient Temperature

°C

Temp Rise

171072.8°C

Winding Temp

171112.8°C

Temp Margin

-170957.8°C

Est. Life

0kHrs

Wire Summary

Mean Turn Length275.9 mm

End Turn Length88.0 mm

Wire per Phase22.1 m

Total Wire66.2 m

Copper Weight488 g

Winding Layout

Coils/Phase

4.00

Slots/Pole

3.0

Coil Span

3.00slots

Pitch Factor

1.000

Recommended Wire:

AWG 4 (5.189 mm)

For 5 A/mm² max current density

Resistance vs Temperature

Slot Fill vs Turns per Coil

Winding Factor vs Coil Span

Current Density by Wire Gauge

Winding Schedule

Phase	Coils	Turns/Coil	Wire AWG	Wire Length	Resistance
A (U)	4	20	18	22.1 m	461334.8 mΩ
B (V)	4	20	18	22.1 m	461334.8 mΩ
C (W)	4	20	18	22.1 m	461334.8 mΩ
Total	12	240	-	66.2 m	153778.3 mΩ (Y)

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