YokelessMotor — DC bus window and current budget
Worksheet revision: 2026-10-21 | Units: V DC, V RMS/peak, A DC/RMS/peak, Nm, rpm, kW
Guide: https://yokelessmotor.com/learn/axial-flux-motor-dc-bus-voltage-selection
Interface planning record; not a battery design or electrical approval.

Programme / company / work email:
Motor deliverable, quantities and timing:
Source owner / drive owner / motor owner / system acceptance owner:
Configuration and evidence status: requested / simulated / measured

Source and inverter DC terminals:
- Nominal source label:
- Lowest source voltage under required load:
- Cable / connector / contactor / fuse drop at stated current and temperature:
- Minimum loaded voltage at inverter terminals:
- Source state of charge, temperature and ageing assumptions:
- Maximum charged voltage, tolerance and source acceptance limits:
- Credible regenerative / transient maximum at inverter:
- Inverter normal operating ceiling, warning / trip and absolute limits separately:
- Regenerative energy path, non-sinking source and disconnect behaviour:

For each shaft duty point:
- Torque, rpm, duration, repetition and initial state:
- Shaft power / motor and inverter efficiency assumptions / auxiliary loads:
- Estimated average DC current and source current limits:
- Phase RMS and phase peak limits, waveform and winding connection:
- Winding revision, torque constant and current convention:
- Back-EMF constant: phase/line-to-line AND RMS/peak convention:
- Loaded motor voltage requirement, resistance / inductance / temperature:
- Drive modulation strategy and practical voltage headroom:
- Feedback, control mode, protection, cooling and hot-spot limits:

Open inputs / required measurements / agreed release test:
Need NDA before proprietary information? Yes / No / To discuss
An NDA request is not an executed agreement. Start with non-confidential information.
Contact: inquiry@yokelessmotor.com