4 ms·
"the dual motor Model S will quickly torque sleep a drive unit when torque is not needed and instantly wake it up as the accelerator is pressed to command more
by TrainedMonkey 12y ago
"the dual motor Model S will quickly torque sleep a drive unit when torque is not needed and instantly wake it up as the accelerator is pressed to command more torque."
I can't understand this, is first torque meant to be toggle?
- sp332 12y ago"Torque sleep" just means the unit stops producing torque for a while.
- dmckeon 12y agoTorque sleep sounds like the electric motor equivalent of free-wheeling: https://en.wikipedia.org/wiki/Freewheel https://en.wikipedia.org/wiki/Freewheel
- TD-Linux 12y agoTesla cars use induction motors. The rotors of an induction motor don't supply their own field, but need to be excited by current in the stator, which requires power. In addition, once there is a field, it produces hysteresis losses proportional to the speed of the motor. If the motor is completely off, the losses from freewheeling are very small. Cars based on permanent magnet motors do not need to use power to maintain the rotor's magnetic field. On the downside, the field cannot be shut off, so they always have hysteresis loss and cannot freewheel as nicely as induction motors can.