ajdelange
Well-known member
- First Name
- A. J.
- Joined
- Dec 8, 2019
- Threads
- 4
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- 3,213
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- 3,403
- Location
- Virginia/Quebec
- Vehicles
- Tesla X LR+, Lexus SUV, Toyota SR5, Toyota Landcruiser
- Occupation
- EE (Retired)
I have no idea what the motor selections are going to be. The PM motors are more efficient for sure so I would think they would want to use them to the fullest extent possible. The IM's have more low speed torque though so as you mention for the 3 and in my X there is a IM in the back and a PM in the front. The TriMotor will have 3 motors and thus three places to get torque from. Will adding that third source of torque be enough to overcome the torque limitations. I really don't know.
My comment on efficiency was based on the assumption that if power or torque is being derived from 3 motors instead of 2 each would draw 2/3 the current drawn by 2 for the same level of power or torque. The I^2R losses would thus be proportional to 3*4/9 = 4/3 for the tri motor and to 2 for the dual motor.
My comment on efficiency was based on the assumption that if power or torque is being derived from 3 motors instead of 2 each would draw 2/3 the current drawn by 2 for the same level of power or torque. The I^2R losses would thus be proportional to 3*4/9 = 4/3 for the tri motor and to 2 for the dual motor.
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