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How can i design single phase voltage regulator?

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quadrophedia

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hi to all,
sorry if i'm in the wrong topic cuz i'm new to this..
i just want to ask..
can i design a buck-boost chopper that will convert the input voltage of 240vac to 230vac?
 

Another option is to use a transformer - if you need isolation, or autotransformer - if you don't care about isolation .. see attached picture ..

Rgds,
IanP
 

thanks IanP,
anyway is there any other way which is not using the transformer?
 

Make 240 volt to DC and then DC to 230. At this case transformer is also required (2 Pcs)
 

can i design a buck-boost chopper that will convert the input voltage of 240vac to 230vac?
Click to expand...
Basically yes. Consider two H-bridge inverters (one for input and one for output) and a DC bus. That's the design for a bi-directional
converter with sine input and output, simplified implementations are possible.

Apart from a lot of power semiconductors and a complex control circuit, you need inductors at input and output and a DC bus capacitor.
But it works, and in some cases can be meaningful to avoid a bulky low-frequency transformer. It's more interesting for 50/60 Hz
frequency conversion.

Also a single phase VFD inverter does basically the same. Present products have mostly simple rectifier input circuits with non-sine input
current and aren't capable of energy recuperation.
 

FvM thank you for your previous reply i really appreciate it.
i try design the circuit that u mention using the H-brigde.
but i cant get the output waveform that it sine wave like the input.
why is that happen?
sorry i'm still a student so i'm not good in design a circuit.
 

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