Alan B
100 GW
Keep in mind that you cannot read the efficiency on the CA simulator at any other than the one equilibrium point. At any other point on the graph the efficiency shown is incorrect as the system is accelerating or decelerating, and the efficiency while accelerating or decelerating is not the true efficiency at that speed.
If you want to know the efficiency at another speed you have to adjust the throttle and rerun the simulation repeatedly until you get equilibrium at the desired velocity. Then the efficiency is correct at that one speed.
Also the simulator does not limit phase (motor) current, so the acceleration on the lower part of the graph is higher than reality, and the efficiency is lower than reality for the part of the graph where motor current exceeds what the controller will allow.
Using a more sophisticated controller (like the PhaseRunner) with these small motors is a good idea. The low cost controllers don't properly regulate the motor current and sense the temperature of the motor, and these motors cannot take much excess power. A lot of vendors will no longer carry or sell them because they are easy to damage. Operated with proper motor current limits and temperature sensing they should be quite reliable, but the power they can put out is limited. Adjust your expectations.
Using a good controller should allow the use of a so called faster wind motor with the same efficiency and a wider range of speed than a slow winding. It is easier to overcurrent and overheat a fast wind motor, since it is really a low voltage motor, and requires more control. The motors themselves can handle the same power and produce the same torque, the voltages and currents are just different. At low speed a low voltage motor can easily be damaged, so the controller must manage the current properly. Cheap controllers don't even know the motor current so they cannot manage it well, but FOC controllers like the PhaseRunner measure the current and can easily control it, that's the way they inherently work.
If you want to know the efficiency at another speed you have to adjust the throttle and rerun the simulation repeatedly until you get equilibrium at the desired velocity. Then the efficiency is correct at that one speed.
Also the simulator does not limit phase (motor) current, so the acceleration on the lower part of the graph is higher than reality, and the efficiency is lower than reality for the part of the graph where motor current exceeds what the controller will allow.
Using a more sophisticated controller (like the PhaseRunner) with these small motors is a good idea. The low cost controllers don't properly regulate the motor current and sense the temperature of the motor, and these motors cannot take much excess power. A lot of vendors will no longer carry or sell them because they are easy to damage. Operated with proper motor current limits and temperature sensing they should be quite reliable, but the power they can put out is limited. Adjust your expectations.
Using a good controller should allow the use of a so called faster wind motor with the same efficiency and a wider range of speed than a slow winding. It is easier to overcurrent and overheat a fast wind motor, since it is really a low voltage motor, and requires more control. The motors themselves can handle the same power and produce the same torque, the voltages and currents are just different. At low speed a low voltage motor can easily be damaged, so the controller must manage the current properly. Cheap controllers don't even know the motor current so they cannot manage it well, but FOC controllers like the PhaseRunner measure the current and can easily control it, that's the way they inherently work.