We have three phase input and the voltages in the three input is not the same always. Sometimes, one or two or three phase will be off. I would like to connect the phase to output which lies within the range (110 - 290).
Below will be the example,
Phase 1 (290v), Phase 2 (245v), Phase 3 (190v)
I need to select Phase 1 in this case. Ampere rating would be 40A on the selected output.
Did searched in google for single device (circuit / IC) which can does this, not finding one. Any direction would be helpful.
Voltage Reference: (Added)
Voltage reference is to the neutral line. It would be a
4-wire input to 2 wire output with a common neutral line.
Circuit Thoughts:
Thought 1:
http://www.cy-sensors.com/CYVS14-xnS3.pdf
Compare the voltage on each phase with a voltage comparator, connect the output with a solid state SSR in the output.
I would need a power supply now that can input from magic three phases and generate DC output. Not finding the right one.
Will that work?
Thought 2:
This seem to be a cheaper and reliable solution, without inductive circuits. Please suggest if I have missed something to consider. SMPS - Switch Mode Power Supply (5V).
Thought 3:
This is the cheapest solution, if the input voltage is constant. With the varying voltage, the coil does not seem to take a varying voltage. (100-300V). Help from https://electronics.stackexchange.com/a/71066/24465 . Thanks to the community. If you think something can be improved, please share your thoughts.
Answer
This seem to be good and cheap solution for the problem.
This seem to be a cheaper and reliable solution, without inductive circuits. Please suggest if I have missed something to consider. SMPS - Switch Mode Power Supply (5V).
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