Pulse motor build off time.

[MarkE]

Hi All,

Just about done, boy this is a pulse engine/motor.


Spec:
Radial Pulse Engine/motor/generator
Input 12v@3a max (motor input), stall load 56w
Input 9v (micro controller)
8 coils 24 gauge at 100 ft each (2.567ohms)
PWM speed control
1 micro controller arduino 2560 mega
ECM reading/controls
Rotational 5 degree steps (72 steps per complete rotation)
Control firing power stoke on each piston coil 0deg(TDC) to 180deg(BDC)
8 led piston firing lights
RPM reading (0- 3600)
Output:
BEMF collector from 8 coils

Tommey it looks good.  I have a couple of questions:

How did you measure the input current and the stall load?  A stall load should be a torque.  The mechanical power is zero because at stall there is no motion.  The peak output power would be found by progressively loading the unit more and more and finding where the product of torque and speed is the greatest.  If the relations were linear then it would be 0.25*w_{NO LOAD}*T_STALL.

[TommeyLeeReed]

Hi Mark,

I only gave the true load when the motor is lockd up as the coil was on, in other words 12v/2.567 ohms would give me a stall load of 4.68a or 56w.

As far as working load, I'm still working on that when I run a generator for output reading.

Tom

[TommeyLeeReed]

Hi MCR,

My question is where are the meters for output?

You are showing input of power, but not the true input from power supply. PWM running coils will only show false readings in your volt/amp meters.

If you want real input of power you must use a cap and a resistor on input power before going through the pwm. The meter must show volt/amps at the load cap/res and then connect it to your motor and read it again.

Also you are not showing output on your meters, will you do real input vs output of power?

[TommeyLeeReed]

It's funny when builder claim low power input and when question  they react

Why even show any meter input/output in the first place, it's like a magic trick with out any question...

I believe if anyone want to show meters, they need to show both sides of input vs output or else some people may think they have OU

This build off is showing some tricks for kids

[TommeyLeeReed]

Hi all,

This is my understanding of how a real pulse motor should work

https://www.youtube.com/watch?v=ol60QtAnxf0

Tom