(1) If the working voltage U of the motor is increased, the T-n curve of the entire motor will rise in parallel, the locked-rotor torque of the motor will be increased, the no-load torque of the motor will be increased correspondingly, and the speed constant of the motor will remain unchanged.
(2) Increase the torque constant KT, and n0 will decrease accordingly. The mechanical characteristics of the motor will become hard, that is, the speed constant of the motor will become smaller, that is, the reduced speed of the motor per unit torque will become smaller.
(3) Reduce resistance R and use wires with higher copper purity instead of aluminum wires or copper-clad aluminum wires. Increase the cross-sectional area of the motor armature wire, that is, thicken the wire or increase the number of parallel strands of the coil wire. Use a flat rotor to reduce the effective conductor length of the rotor and minimize the length of the end of the rotor. Brushless motors should use fractional slot concentrated winding motors.
(4) Increase the working magnetic flux Φ, reduce the speed N as much as possible, reduce R and ensure that the torque constant KT of the motor remains unchanged or increased.
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