3 ms·
Which is interesting. I wonder what the math looks like, since induction motors (without the heavy magnets) tend to be lighter. I can see why they'd avoid a rot
by pitaj 8y ago
Which is interesting. I wonder what the math looks like, since induction motors (without the heavy magnets) tend to be lighter. I can see why they'd avoid a rotor-coiled motor, since that comes with lifetime constraints.
- amluto 8y agoAs I understand it, the permanent magnet motor is more efficient at low fractions of maximum torque/power output. So, when cruising, the rear motor will be powered down. When accelerating heavily, the rear motor can kick in.
- baybal2 8y agoInduction motors are worse at regeneration at low speeds, but as poster below said, their advantage is that they can be powered down and not impede coasting. I think they hope to be able to match power requirements of highway cruising using a PM motor, so they don't take losses spinning AC motor way below its power rating.