SG-1
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- Ware Shoals, South Carolina
In a six pulse rectifier circuit there is 10A DC load.
How do I calculate the AC Line currents ?
How do I calculate the AC Line currents ?
six pulse rectifier
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About 8.2A depending on how level the DC current is.
SG-1
Senior Member
- Location
- Ware Shoals, South Carolina
Thank you, very much.
mopowr steve
Senior Member
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- NW Ohio
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- Electrical contractor
I'm intrigued, what is a 6 pulse rectifier?
electrofelon
Senior Member
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- Cherry Valley NY, Seattle, WA
I believe its another name for full wave rectification of three phase. Uses 6 diodes, and you get 6 peaks per cycle.
Like this:
The devices can be either SCRs as shown or, more commonly plain diodes.
SG-1
Senior Member
- Location
- Ware Shoals, South Carolina
With 100 VAC in you have approximately 6 volts of ripple with out using any capacitors.
mopowr steve
Senior Member
- Location
- NW Ohio
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- Electrical contractor
Thank you!
what application are you using this for in the context of this thread?
what application are you using this for in the context of this thread?
If that was addressed to me....
Industrially, one of the more common applications is for the input stage of variable frequency drives.
I've also used six pulse rectification for high current rectifiers for anodising plants. The circuit arrangement is usually a bit different. Still six pulse but in a hexaphase arrangement.
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
One could use a delta wye transformer to get a 30 degree phase shift and make a 12 pulse rectifier for less ripple.
You would two secondaries, one delta, one wye.
Ddyn11 for example.
It's an arrangement often used on higher current DC supplies. This mainly to reduce AC supply harmonics. It eliminates the 5th and 7th harmonics that you get with six-pulse.
SG-1
Senior Member
- Location
- Ware Shoals, South Carolina
Simple power supply for testing control circuits. The AC is supplied by 3-phase variable auto transformers.
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