Wednesday, April 23, 2025

 

 Real-World: How to Create More Torque in an EV

Torque = rotational force, and in EVs, it’s all about how efficiently you deliver current to the motor. Here are the main ways to boost it:

1. Higher Voltage System

  • More voltage = more current (within thermal limits), which feeds the motor harder.

  • Think 800V systems like the Porsche Taycan vs. 400V in a standard EV—faster torque delivery.

2. Bigger or More Powerful Motor(s)

  • A physically larger or dual motor setup (front and rear) generates more torque.

  • Tesla’s “Plaid” mode uses tri-motor setups for bonkers acceleration.

3. Gear Reduction

  • EVs usually have a fixed gear ratio, but you can tweak that ratio for higher torque at the cost of top speed.

  • Think of it like mountain bike gears—low gear = more torque, slower speed.

4. Improved Motor Cooling

  • If your motor runs cooler, you can push it harder for longer.

  • Water cooling, phase change systems, even liquid nitrogen (in extreme race apps).

5. Software Tuning (ESC & BMS)

  • The Electronic Speed Controller (ESC) and Battery Management System (BMS) can be tuned to allow higher current delivery—basically, uncorking the motor digitally.

6. Use Permanent Magnet Synchronous Motors (PMSM)

  • These give you more torque per amp than older induction motors. More efficient, more twist.

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