Converting three phase power transmission to single phase power
Converting three phase power transmission to single phase power
(OP)
Hi all, I'm not an electrical engineer but a question is itching my brain.
How does one convert three phase power to single phase power? (preferably with a diagram attached?)
The reason I ask is that the three phase power transmission system is the de facto power transmission system.
Also, concerning domestic households, single phase domestic power consumption is the de facto domestic power consumption method.
Given that these systems are ubiquitous in every corner of the world, I would expect an explanation of this on the internet yet not a single hit on google search. In fact, all I get are articles explaining the opposite process and claiming phase converters are much more used in converting single phase to three phase (the opposite of what Im looking for). REALLY?? Much more used in converting single to three phase??? Well maybe Im on the wrong planet here, but I in my world, three to 1 phase conversion is WAY more common as per my reasons above.
How does one convert three phase power to single phase power? (preferably with a diagram attached?)
The reason I ask is that the three phase power transmission system is the de facto power transmission system.
Also, concerning domestic households, single phase domestic power consumption is the de facto domestic power consumption method.
Given that these systems are ubiquitous in every corner of the world, I would expect an explanation of this on the internet yet not a single hit on google search. In fact, all I get are articles explaining the opposite process and claiming phase converters are much more used in converting single phase to three phase (the opposite of what Im looking for). REALLY?? Much more used in converting single to three phase??? Well maybe Im on the wrong planet here, but I in my world, three to 1 phase conversion is WAY more common as per my reasons above.






RE: Converting three phase power transmission to single phase power
Depending on the transmission line system configuration (That is, three wire or four wire), a single-phase service can be derived from a single-phase transformer whose primary windings are connected in a phase-to-neutral or phase-to-phase configuration.
RE: Converting three phase power transmission to single phase power
RE: Converting three phase power transmission to single phase power
Please check the attachment picture below is what I'm talking about.
The top part of the pic is the transmission line (with no neutral line) and the bottom part is trying to tap off into a single phase for domestic use. Is it really this simple?
RE: Converting three phase power transmission to single phase power
RE: Converting three phase power transmission to single phase power
The blue trace is derived from the blue line to the green line.
The green trace is derived from the green line to the red line.
Take any pair and you have single phase.
Take all three and you have three phase.
Bill
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"Why not the best?"
Jimmy Carter
RE: Converting three phase power transmission to single phase power
A ten lead generator may be connected for single phase on the low voltage only with the bar-diamond or Collins connection.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Converting three phase power transmission to single phase power
RE: Converting three phase power transmission to single phase power
RE: Converting three phase power transmission to single phase power
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Converting three phase power transmission to single phase power
RE: Converting three phase power transmission to single phase power
An example that I know off the top of my head from generator conversions is the zig-zag connection (not the same as a zig-zag grounding transformer).
The zig-zag connection, with a unity power factor load, will have a power factor of unity in one supply phase, 60 degrees lagging in one phase and 60 degrees leading in the third phase. The KVA capacity of the generator or transformer bank will be reduced to 2/3 of the nameplate ratings. eg: When a 60 KVA three phase generator is reconnected in single phase, the single phase capacity will be 40 KVA.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Converting three phase power transmission to single phase power
RE: Converting three phase power transmission to single phase power
Current balanced?
Wattage balanced?
KVA balanced?
Power Factor balanced?
Bill
--------------------
"Why not the best?"
Jimmy Carter