Steve Saunders Goldwing Forums - View Single Post - GL1500- Do I have an OverCharging Issue

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post #23 of (permalink) Old 04-19-2019, 03:03 AM
AZgl1800
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Join Date: Oct 2006
Location: Oologah, Indian Territory, USA...
Year: 2002
Make: Honda
Model: GL1800 Hot Rod Yellow
Posts: 57,146
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You are going to have to forget what you know about a Sinewave single output winding, that has the negative side of the diode tied to "Ground". This will produce only positive going pulses, or "dead air", if you like on the negative going half of the cycle.



With Alternators, the Wye connection, of a 3 phase system, ( floating ground ) is not connected to anything except the the common points of each of the 3 windings in the Alternator and the center of the Diode Stack.



Calling the center Wye connection a "Ground" is very misleading, and really confuses the issue for those who are not in the habit of reading schematics.



The Bridge type Rectifier catches the Negative going pulse, and outputs it to the charging system properly.



It is the output of the Bridge Diode Stack, that actually has the "Ground/Negative" connection, and the Plus ~13.6 VDC output terminal.



you need to follow the schematic closely to see what is going on, just take one leg at at time and note how it finally makes it way to the Plus, and Minus terminals of the Diode Stack.


The output voltage is regulated by controlling the amount of current into the Field of the Alternator, which in turn controls how much magnetism is generated in the poles of the stator. ( frame of an alternator )

~ John


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