1. High power density: Power density is the ratio of output power to weight or volume. Copper coil motor has small volume and good performance. Compared with the traditional coil, the induction coil in copper coil mode is lighter. There is no need to wind and slot silicon steel sheets, which eliminates the eddy current and hysteresis loss. The eddy current loss in copper coil mode is very small and easy to control, which improves the efficiency of the motor and ensures higher output torque and power.
2. Good heat dissipation effect: the inner and outer surfaces of the copper coin electromagnetic coil often have gas fluidity, which is better than the heat pipe of the slot motor rotor electromagnetic coil. The traditional covered wire is embedded in the slot of the ferrite core, and there are very few cyclones on the surface of the electromagnetic coil, so the heat pipe has poor heat dissipation and high temperature. With the same power, the motor temperature of copper coin electromagnetic coil method is smaller. Therefore, the energy density of hollow cup motor is higher than that of stepping motor.