I am in need of 100W 230v 50Hz to 115v 400Hz converter Circuit. Help me

 

I am in need of 100W 230v 50Hz to 115v 400Hz converter Circuit. Help me

There are multiple ways to achieve your goal. Do you have any preliminary thoughts on the matter?

 

If you want a plug and play solution;

http://www.frequencyinverter.org/50hz-60hz-400hz-converter.html

Surf the site, there is a simple schematic for a frequency converter circuit, with a modified sine wave output.

 

I am in need of 100W 230v 50Hz to 115v 400Hz converter Circuit. Help me

What current?

Ron

 

Aside from voltage and frequency, the CURRENT requirement is rather important. Without knowing how much power must be delivered it is all a guess. The acceptable waveform quality also matters. Since we do have the wattage desired as well as the voltage, simple math is all that is needed.

 

At a guess, about 0.44A on the 230V side and 0.88A on the 115V side would make 100W. But is it single phase or three?

 

OK, I missed the "100W in post #1. I suggest a full wave bridge rectifier followed by a transformer inverter. If the secondary can be resonated at 400Hzwith suitable capacitors, and the bias set correctly a sine wave may be achieved. There will need to be , probably, additional circuitry to provide that "simulated sine wave" output, if grater efficiency is desired.

 

The other scheme that I am aware of is called a "Cyclo-converter" and switches the supply phases around to provide the required waveform. WAY too complex for any of my applications.

 

Cycloconverters can only change the base frequency to a lower submultiple of it.
And indeed it is complex. But the topology is perfectly capable of tens of megawatts, so it is mostly employed on large marine drives.

 

One possible scheme would be to use the inverter portion of a UPS package with a different driver for the inverter devices. My observation is that there are a lot of UPS devices scrapped, and thus available.
I did not realize that cycloconverters could only reduce the frequency.

 

How about a 100W audio amp powered by the 230Vac with a 400Hz oscillator input.
This give about a 28Vac (for a typical 8Ω speaker load) so use that to drive the output winding of an audio or 400Hz, 115V to 28V, 100W transformer to get 115Vac.

 

How about a 100W audio amp powered by the 230Vac with a 400Hz oscillator input.
This give about a 28Vac (for a typical 8Ω speaker load) so use that to drive the output winding of an audio or 400Hz, 115V to 28V, 100W transformer to get 115Vac.

It can even more easily drive the transformer from a scrapped UPS!! They seem to be rather abundant these days.

 

I did not realize that cycloconverters could only reduce the frequency.

See below for a graphical operation of a cycloconverter. This is single phase input, with a three phase the valleys are significantly diminished.

 

It can even more easily drive the transformer from a scrapped UPS!! They seem to be rather abundant these days.

Problem is, the eddy current loss at 400Hz is 8 times the loss at 50Hz, so there's a good chance the transformer would overheat.
That's why it's best to use a 400Hz or audio transformer for this purpose.

 

How about a 100W audio amp powered by the 230Vac with a 400Hz oscillator input.
This give about a 28Vac (for a typical 8Ω speaker load) so use that to drive the output winding of an audio or 400Hz, 115V to 28V, 100W transformer to get 115Vac.

That would be my solution. Exactly what I used when I needed to test at 60Hz for goods exported to America.
If the transformer is not readily available, you can get a 3kW audio amplifier quite cheaply these days. It will give you sufficient output voltage to get 115V in bridge-tied-load. It will be class-D and efficient!

 

OK, so the transformer from the UPS will need to be seriously de-rated. Presently I have a UPS that describes it's output as that "simulated sine wave". That means it produces the lower duty cycle square blocks that provide the same RMS voltage while having a 160 volt flat top value. I have not powered it up on 12 volts yet to see what the output really looks like.
The big inverter transformer looks very strange: Two legs, with parallel windings on each leg. It is an APC model PS250. Possibly it can be converted to 400Hz??

 

I am in need of 100W 230v 50Hz to 115v 400Hz converter Circuit. Help me

Have you got the circuit / power supply. I am looking for a similar circuit

 

You want something like this. A 400 Hz Inverter. Popular use is a VFD motor drive. The link is poly phase and all you really need is single phase. Most go from 0 to 400 Hz.

Ron

 

Cycloconverters can only change the base frequency to a lower submultiple of it.
And indeed it is complex. But the topology is perfectly capable of tens of megawatts, so it is mostly employed on large marine drives.

Certainly a more complex version of a cyclo-converter could raise the frequency 8X, but it would be a whole lot different from the original cyclo-converter. AND it would certainly need a high-"Q" resonant output transformer. It would be more like an inverter ppowered with rectified unfilterd DC. So that could be the way to go! A switching type of inverter doing an "8X" frequency multiplication. With the right switching scheme it could be very effective because of no linear mode operation. It could be at least 90% efficient!!

 

Let's have a talk among ourselves.