conversion of 264v dc to 220v ac

[ch wazir]

hi,
is there any way to convert 264v dc into 220v ac.it will be highly appreciated if someone help.thanks

 

[BradtheRad]

By 220 VAC, do you refer to square-ish waves, or to sine waves?

The peak amplitude of 220 VAC sine waves is 1.4 x 220, or 310 V.

You can send 264 VDC through an H-bridge and get 264 VAC square waves.

And if the load is unchanging, a series LC (of the correct values) will alter the waveform so it resembles a sine wave, while it boosts the amplitude to 330 VAC..

 

[ch wazir]

thnx for in time quick response,the load is somewhat near to 15 ampere,kindly intimate the numbers/data of transistors and wattage of inductor to be used .regards

 

[BradtheRad]

A sinewave peaks at 1.414 x nominal.
At 15A this means a peak of 21 A.

The inductor must be rated to carry 21 A safely, at 50Hz, and 340V peak V. This is on the order of 7 kW.

I have increased the current flow in my simulation. You can use a lower Henry value. The capacitor must have a higher value. These are based on the standard formulae for calculating reactance.

There is an alternate LC filter configuration, where the capacitor is parallel with the load. It's worth a look.

kindly intimate the numbers/data of transistors and wattage of inductor to be used .

As you can see the transistors must pass 21A, and must endure 264 V. (I do not know what numbers to recommend.)

You can also use mosfets. (The clock voltages must be modified to a safe level.)

You can also use 2 or more switching devices in parallel.