Ya I am not arguing with you I think your right, but what I am saying is, should the boost show a current on the ground side? And because it does where is the current coming from? We aren't pushing any current towards ground... I could see it being balanced if we looped back to ground but we are not..
Now if those shared current are passing through the boost converter and making it to the motor then that current is all being used by the motor and the count on the ground side is just the contribution by the boost converter. Either way 4+ amps was going through the converter to the motor, it had no where else to go. If it went to ground the motor wouldn't run and that would mean the efficiency drops off and what we see on the ground side is waisted power.
So boost converter does this: It pulls current from the positive pole of the battery into the inductor. The induction in the inductor stalls the current making it rise to a higher voltage. The switch shuts off the inductor discharges over time through the output diode. The smoothing caps keep it at the required voltage by leveling it over time.
Now we take that current at higher voltage now, run it through the motor, discharge it out the motor send it back to the battery. It hits the beginning of the amp meter raises the current over the contributed energy, and because it already high voltage skip over the top of the inductor and goes into the motor along with what ever the inductor just put in.
If it wasn't doing that it would hit the battery and NOT show up as current flowing. BY your own diagram.
So is the ground current valid for anything other than showing what is contributed. Because the watts past through the motor are what matter, or do they not matter and we are only concerned with what comes out of the battery. Because if that was case it would be horse power measurement obviously more work could be done on 4 amps in the motor than 3 amps. So either way we come out ahead. One or the other is the best way to measure but either way that current is going into the motor.
There is only so many ways to put it...
Matt
Now if those shared current are passing through the boost converter and making it to the motor then that current is all being used by the motor and the count on the ground side is just the contribution by the boost converter. Either way 4+ amps was going through the converter to the motor, it had no where else to go. If it went to ground the motor wouldn't run and that would mean the efficiency drops off and what we see on the ground side is waisted power.
So boost converter does this: It pulls current from the positive pole of the battery into the inductor. The induction in the inductor stalls the current making it rise to a higher voltage. The switch shuts off the inductor discharges over time through the output diode. The smoothing caps keep it at the required voltage by leveling it over time.
Now we take that current at higher voltage now, run it through the motor, discharge it out the motor send it back to the battery. It hits the beginning of the amp meter raises the current over the contributed energy, and because it already high voltage skip over the top of the inductor and goes into the motor along with what ever the inductor just put in.
If it wasn't doing that it would hit the battery and NOT show up as current flowing. BY your own diagram.
So is the ground current valid for anything other than showing what is contributed. Because the watts past through the motor are what matter, or do they not matter and we are only concerned with what comes out of the battery. Because if that was case it would be horse power measurement obviously more work could be done on 4 amps in the motor than 3 amps. So either way we come out ahead. One or the other is the best way to measure but either way that current is going into the motor.
There is only so many ways to put it...
Matt
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