larsb
1 MW
I have thought a while about a fundamental question on the motor and force generation from the magnetic fields.
The coils magnetic fields generated are turned on to interact with the permanent magnets in a BLDC
This should mean that the force and torque of a motor are directly related to the available permanent magnet field strength and therefore has a maximum achievable level where the permanent magnet field is "overpowered"
on a simplified level i think the magnet field strength should be the first design consideration - but it isn't in the literature i've read.
Why?
Isn't it possible to achieve higher fields from the coils than even an N52 neodym?
(so the limiting factor for torque should then be the magnets.)
The coils magnetic fields generated are turned on to interact with the permanent magnets in a BLDC
This should mean that the force and torque of a motor are directly related to the available permanent magnet field strength and therefore has a maximum achievable level where the permanent magnet field is "overpowered"
on a simplified level i think the magnet field strength should be the first design consideration - but it isn't in the literature i've read.
Why?
Isn't it possible to achieve higher fields from the coils than even an N52 neodym?
(so the limiting factor for torque should then be the magnets.)