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used in inverter

2007-04-06 22:46:10 · 3 answers · asked by Anonymous in Science & Mathematics Engineering

3 answers

friend,

As you know transformer is a an instrument, OR a devise , without any moving parts in it, which transforms or converts energy at a lower potential,or voltage to a higher potential .This is called STEP UP TRANSFORMERS.

These transformers are capable of converting electrical alternating Current energy from 11000 volts to 400000 volts,the higher the voltage ,less is the current as V*I= energy(normally,I avoided cos Phi(the angle)).These are used to TRANSMIT ENERGY TO LONG DISTANCES AT LOWER LOSSES AS CURRENT IS LESS AND CONSEQUENTLY THE COPPER LOSSES ARE LESS.
THESE TRANSFORMERS THAT TRANSMIT POWER ARE CALLED POWER TRANSFORMERS.

Other transformers which convert power from higher voltage to 11000 to 440 three phase. distribute power to house holds or small industries and are called DISTRIBUTION TRANSFORMERS.
You can these Distribution Transformers road side in any town or city.
Power transformers are IN Sub Station as they require a lot of protection equipment.
I think the answer is useful to some extent at least.

2007-04-06 23:29:49 · answer #1 · answered by Radhakrishna( prrkrishna) 7 · 0 0

The inverter has two main sections. first is the switches, usually transistors, that turn the DC source voltage on/off. second is the transformer that converts the low DC voltage (commonly 12 volts) to the required high AC output voltage (typically 120 volts). However the transformer used in this application performs two additional steps beside mere voltage step up. The input to this transformer is center tapped. The switches first put the DC to one of the end windings, and then alternate to the other end winding. This creates the phase/voltage reversal for AC current. Secondly, for simple free-running inverters, it has an additional winding to create feed-back voltage to control the sychronization of the switching transistor's timing. In more sophisticated pseudo-sine wave inverters, the power transformer provides more windings and taps for additional switchers to apply boost/buck steps.

2007-04-07 09:45:25 · answer #2 · answered by lare 7 · 0 0

The waveform of the output of inverters is basically rectangular in shape(as most of them are switching circuits). This needs to be converted to a pure sine wave before it is sent for distribution. The power transformer on the output side of the inverter does that. In addition to that it may serve other purposes too as described in the previous answer.

2007-04-10 01:15:10 · answer #3 · answered by chandra s 2 · 0 0

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