What are the characteristics of hollow cup motors.
High power density
Power density is the ratio of output power to component or volume. The copper coil method has a smaller motor volume and better performance. Compared to traditional coils,
The induction coil of the copper plate coil method should be lightweight. No need for wire winding and slotted silicon steel sheets, eliminating the eddy current and hysteresis losses that occur in them; Copper coil.
The eddy current loss of the method is very small and easy to control, which improves the efficiency of the motor and ensures high output torque and power.
High efficiency
The high efficiency of the motor lies in the fact that the copper plate coil method does not have eddy currents and hysteresis losses caused by winding wires and slotted silicon steel sheets; Other than that, the resistance is small
No torque hysteresis
The copper plate coil method has no slotted silicon steel sheets, no hysteresis loss, and no cogging effect, which reduces speed and torque oscillation.
No cogging effect
The copper plate coil method does not have slotted silicon steel sheets, which eliminates the cogging effect caused by the interaction between slots and magnets. The coil has a structure without an iron core
Some steel components either rotate together (such as brushless motors) or remain completely stationary (such as brushed motors) due to the cogging effect
The phenomenon of torque hysteresis is clearly non-existent.
Low starting torque
No hysteresis loss, no cogging effect, low starting torque. When starting, the general bearing load is the only obstacle. This method can make the wind
The starting wind speed of the power generator is very low.
There is no radial force between the rotor and stator
Because there are no static silicon steel sheets, there is no radial magnetic force between the rotor and stator. This is particularly important in critical usage scenarios.
Because the radial force between the rotor and stator can cause rotor instability. Reducing radial force will improve the stability of the rotor.
Smooth speed curve and low noise
Silicon steel sheets without grooves reduce the harmonics of torque and voltage. Because there is no AC field inside the motor, there is also no AC occurring
The noise. Only the noise generated by bearings and airflow, as well as the oscillation formed by non sinusoidal currents.
High speed brushless coil
When working at high speeds, a small inductance value is necessary. A small inductance value results in low engine voltage. By adding more poles and reducing the thickness of the casing, the inductance value changes
Small helps to reduce the weight of the motor. Together, it has increased the power density.
Quick response with brushed coils
The copper plate coil method has a brush motor, which responds quickly to voltage fluctuations due to low induction values. The rotational inertia of the rotor is small, and the torque and current are affected
The response speed is appropriate. Therefore, the rotor acceleration is twice that of traditional motors.
High peak torque
The ratio of peak torque to continuous torque is large because the torque constant remains constant as the current rises to its peak. Current and torque
The linear relationship enables the motor to generate a large peak torque. Traditional motors, when the motor reaches saturation, no matter how much current is used,
The torque of the motor will not be added again.
Sine wave induced voltage
Due to the accurate orientation of the coil, the voltage harmonics of the motor are relatively low; And because of the structure of the copper coil in the air gap, the induced voltage occurs
Smooth waveform. Sine wave drive and controller can generate smooth torque in the motor. This characteristic is observed in objects that work slowly, such as microscopes
Mirrors, optical scanners, and robots are particularly useful for accurate directional control, with smooth operation and control being its key.
Good heat dissipation
The copper coil watch has air activity both inside and outside, which is better for heat dissipation than slotted rotor coils. The traditional enameled wire is embedded in the groove of silicon steel sheet, and the coil
There is little airflow on the surface, poor heat dissipation, and significant temperature rise. Equal output power, the motor temperature rise of the copper coil method is relatively small.
