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The Silence of Speed: Redefining Torque
EngineeringDeep DiveOCT 12, 2024

The Silence of Speed: Redefining Torque

An inside look at our proprietary vector-control algorithms that eliminate motor whine while delivering 250 N·m of instant torque.

Electric motors are inherently smooth — but at high RPM under load, harmonic oscillation in the stator windings produces an audible whine that undermines the experience. We set out to eliminate it completely.

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Our approach starts at the controller level. The Braxx Vector Control Unit (VCU) runs a field-oriented control algorithm at 20kHz switching frequency, well above audible range. By dynamically adjusting the d-axis and q-axis current vectors in real-time, we maintain optimal torque output while suppressing the electromagnetic harmonics that cause noise.

The result is 250 N·m of instant torque delivered in near-silence. From a standstill, the GT accelerates with nothing but wind noise and tire contact. It fundamentally changes what acceleration feels like — raw force without the acoustic drama.

We paired this with a custom-wound stator using segmented tooth geometry that reduces cogging torque by 60% compared to conventional designs. Every component in the drivetrain was selected not just for performance, but for acoustic transparency.