Back-EMF rises with speed
As motor RPM increases, Back-EMF opposes the supply voltage and reduces usable voltage headroom.
Technology deep dive
Voltage Adder Cell Architecture for Extended EV Voltage Headroom
VAC is a modular power-electronics architecture designed to help EV drivetrains maintain usable DC-link voltage when Back-EMF rises and torque demand becomes harder to support.
Public-safe system viewBattery -> VAC -> Inverter -> Motor
Battery
VAC
Inverter
Motor
Design objectiveMore voltage headroom under demand
Operating principle
Why Voltage Headroom Matters
VAC addresses a specific powertrain behavior: as speed and demand rise, the inverter needs enough voltage headroom to keep current available. Without that headroom, torque can collapse.
Current begins to starve
When available voltage can no longer overcome demand, current flow weakens and torque production drops.
VAC adds voltage headroom
VAC is designed to inject additional voltage during demanding conditions to support sustained motor operation.
VAC architecture
Modular Voltage Addition Across the DC Link
The architecture uses a base power conversion path with modular VAC stages that can be scaled conceptually as voltage requirements increase. This public view explains the platform logic without exposing confidential implementation detail.
VinRated Battery
BoostBase Stage
VAC 01Voltage Cell
VAC 02Voltage Cell
VAC MScalable Stage
VoutExtended DC Link
Actual prototype image3.2 kW VAC hardware
Prototype evidence
3.2 kW Prototype Hardware, Built for Screened Technical Diligence
VAC is no longer only a simulation narrative. The current 3.2 kW class prototype hardware is ready, with the next 5 kW platform under development. Public pages show proof of hardware progress while protecting sensitive implementation detail.
3.2 kW class prototype hardware ready5 kW platform under developmentInitial deployment planned with Archon MotorsDetailed schematics, BOM, Gerbers, and firmware architecture held for screened diligence
Full design files and deeper validation material should remain inside the screened data room, not on the public website.
Inside each VAC cell
A Simple Public View of the Cell Building Blocks
VAC uses a proprietary arrangement of inductors, capacitors, and diodes within a modular voltage-adding architecture. The exact circuit configuration, component count, interconnections and operating sequence remain proprietary.
Technical translation
What Changes When VAC Is Added?
VAC is not positioned as a decorative add-on. Its purpose is to reduce voltage headroom stress during the operating conditions where EV drivetrains can lose speed capability and torque.
Modular voltage-adding architectureDesigned around high-demand EV operating conditionsIntegrates conceptually with boost converter systemsPublic-safe architecture with screened deeper diligence
Without VAC
Voltage ceiling reached earlier
Current drops at high RPM
Torque output falls
With VAC
Additional voltage headroom
Lower duty-cycle pressure
More stable high-demand operation
Screened diligence
Need Deeper Technical Detail?
Public pages remain intentionally schematic-safe. Investors, collaborators, and technical reviewers can request deeper documents through a screened data room workflow.
Request Data Room AccessBook Technical DiscussionPatent-filed architecture; sensitive design details withheld.