Electrical Question

Contact sumairali.

He is very knowledgeable in electrical.

Do something else.

Why do you think it should be getting reduced?

All you are doing is creating an energy loop with a 100% loss going on inside the looped components.

Hi Maruti,

We have also used 4Q System in our Test Plants, where in we have generated a DC bus and the Output Supply is Fed to this Bus. In our Case the 4Q is DC / DC, I do not know about the AC / DC 4Q System.

But the DC / DC 4Q System is Simple, You need to either replace the 100 Kw / 2 Pole motor with DC motor, or use Invert the Supply from DC Bus to AC and then Drive the AC motor.

In this Case your AC motor will be fed through the Inverted Power from DC bus and the Output from the Rectifier circuit will be fed to the Same DC Bus..

Regards,

Hi Vishram Thanks! This type of system already working at some place.If you dont mind i will call u pls give ur no.so that we can discuss in detail Regards

Hi Maruti,

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Thanks

Regards,

Vishram Lele

This should work if implemented properly. Getting twice the current may be due to the bad power factor of the regenerative DC drive, or a simple connection error. Make sure that the phases are correctly sequenced.

You also need some galvanic isolation between the different switching devices if you are going to connect their DC bus together.

We do it on a continual basis to test our active front end power converters (inverters). The line only supplies the system losses of about 10%. We are presently running 2 x 400 kW converters in a loop with the line supplying less than 80kW.

The converters don't see much difference from a real application other than the higher feeder line impedance. It allow us to test our equipment at full power using a typical power feed.

This principle can be used with motors, transformers, generators, and electronic power converters.