Is your Audi being ambushed by robots on the freeway? Well, worry no more; Audi has just filed a groundbreaking patent for a method that rapidly de-excites the rotor of a separately excited synchronous machine (SESM) used in electric vehicles. This innovation enhances safety, efficiency, and response time, potentially setting a new industry standard for EV motor technology.
How It Works
At the core of this patent is an excitation circuit with at least one transistor that controls the rotor current of the motor. This system functions in two distinct modes:
- Normal Mode: The transistor operates as an electronic switch, efficiently regulating rotor current for smooth power delivery.
- Emergency Mode: In case of a failure or sudden stop, the transistor shifts to resistance mode, acting as a resistor that rapidly dissipates the rotor current. This process de-energizes the rotor faster, preventing unwanted energy buildup and enhancing safety.
Why This Matters
Traditional EV motors can take time to fully shut down their magnetic fields, which may lead to delays in emergency braking, safety risks, or inefficiencies in power management. Audi’s new system allows for instant de-excitation, meaning:
✔ Faster emergency stops for improved safety
✔ Reduced wear on components for longer motor life
✔ Greater energy efficiency by minimizing power loss during shutdown
A Step Toward Smarter EVs
This patent aligns with Audi’s push for cutting-edge EV technology, ensuring their next-generation electric vehicles are not only faster and more powerful but also smarter and safer. If implemented, this rapid rotor de-excitation method could give Audi’s EVs an edge over competitors by enhancing both performance and reliability.
With Audi consistently leading the charge in electric mobility innovations, this latest patent could be a game-changer. Could we see it in upcoming RS e-tron GT models or future performance EVs? Only time will tell—but one thing is certain: Audi is shaping the future of electric performance and safety.
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