4 ms·
How is what you’re proposing different than split-phase, which is already how houses are wired, and how inverters connect? This is why inverters generate 240VAC
by jtc331 7y ago
How is what you’re proposing different than split-phase, which is already how houses are wired, and how inverters connect? This is why inverters generate 240VAC and why your electrical load panel had alternating circuits across the split phase.
- DoctorOetker 7y agoa single AC outlet still pulses power sinusoidally, could you provide a diagram? the 240V split phase is just with a center tap to ground, so each phase is 120V with respect to ground... I don't see the relevance here (unless I misunderstand you)...
- jtc331 7y agoThe GP is saying (IIUC) that you should have 2 outlets and opposite phases. But that’s exactly what split-phase looks like in house wiring, right? (Whether that’s how the inverter functions or not).
- DoctorOetker 7y agowith 2 outlets he means 4 conductor terminals, and with "opposite phases" he means voltages in quadrature (so that power is in opposite phase, since out of phase voltages means in phase power)?
- namibj 7y agoJust provide 3-phase power. The load is nearly constant, and lots of equipment already handles it fine, e.g. motors much prefer 3 phases even at low power, due to this constant power/symmetry.
- DoctorOetker 7y agosure 3-phase would work towards the future, and saves a conductor too, I'm trying to save all consumer equipment (since they universally use 2-phase AC) AND the energy buffer capacitors / inductors in the inverter.
- mikepurvis 7y agoMaybe the real thing here is to get more inductive load equipment shipped with 3-phase as the default. Dryers and stoves are, but they're mostly resistive, and it's for load reasons— 1500W just isn't enough for those applications. But thinking of air conditioners, fridges, washing machines, central vacs, etc; those are all typically shipped today with a two-phase plug but could use 3-phase. OTOH, if they're not actually driving the motor with the 3-phase and are all just rectifying the power and generating their own waveform with a VFD then there's no point; they should have an option to accept DC.
- kragen 7y agoA three-phase circuit consists of three single-phase circuits that share a neutral wire (which, ideally, carries no net current).
- DoctorOetker 7y agotrue, and the 4-phase I propose would also need a neutral for safety... so this advantage for 3-phase persists, as it can do with one conductor less..