How to increase power with a transformer?
Imagine a step-up transformer. We will not consider the input parameters so far. But the weekend !? Step-up transformers are of two types:
- They increase the voltage but the current decreases proportionally, the output power is the same as the input.
- They increase the current and proportionally reduce the voltage. The output power is again the same as the input.
And now let's imagine a transformer with two output windings: one increases the current and consists of 2-3 turns, and the second increases the voltage and consists of several hundred turns.
Question: How can I combine high current with high voltage so that it turns out that the result is an increase in power, i.e. high current multiplied by high voltage we get high power. Is it enough to simply connect the secondary windings of such a transformer in series or in parallel, or is it necessary to come up with something more cunning?
For example, will it be possible to take another transformer, but now it has two primary windings. At the first, for example, 5 turns and a high current is supplied to it, and at the second 5 turns, but high voltage is supplied to it. The secondary winding consists of 20 turns. Will it be possible to get the combined increased power from the two primary windings on the secondary winding by means of not a direct, but magnetic coupling, which is present in the transformer? I hope that you carefully read my question and understand its essence before answering, the question is actually interesting. Thank you all very much in advance, I will look forward to hearing from you.
P.S.
My curiosity was caused by the question of whether, in principle, there is a way to increase power, not individual components of electricity, but power in general. And not necessarily through a transformer, maybe there are any other ways?
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You misunderstand the essence of the transformer. A transformer converts a specific power of electricity into a desired voltage value. The power is one, but at the same time there can be a different ratio of current and voltage. For example, a 110/10 kV transformer on a primary winding of 110 kV has a rated current of 200 A, and on a secondary winding of 10 kV has a current of 3600 A, while the rated power of the transformer is the same at 110 kV and at 6 kV - 40 MVA. At the same time, the transformer did not increase power - how much electricity came, so much came out (if you do not take into account the small losses that are in any transformer).
Read carefully the principle of operation of the transformer and what power is, what current and voltage are.
One voltage is applied to the primary winding, a magnetic flux is induced in the magnetic circuit by this winding, the induced magnetic flux creates a voltage in the secondary winding and a voltage appears on it depending on the number of turns.If you connect these windings, then the transformer will simply fail - there will be a short circuit.
There is no such thing - high current is supplied. Voltage is applied to the winding, and then, depending on the characteristics of the transformer, this voltage is converted. And the current flows when a load is connected to the transformer. More load - more current. If the transformer is step-down, then when the load is connected on the secondary winding, the current is of the same value, and on the primary winding the current is lower, but the power is the same. It cannot be such that one has power at the input, and another at the output.
There can be two secondary windings in a transformer, but the primary is always one. The primary generates a magnetic flux, and then this magnetic flux can be converted into the required voltage value by at least two, even three windings. I repeat once again - read carefully the principle of operation of the transformer and the basic electrical quantities.
And further. Power is the energy that is generated in power plants. For example, how much coal or gas was burned - so much power was given to the power grid. All the power in our networks is generated at power plants. There are alternative ways of generating electricity - solar panels, wind generators. Power just does not appear and cannot be obtained without the cost of another type of energy - fuel in power plants or the energy of water, sun or wind.
Good day! Very interesting question! How can I contact the author of the question?
An interesting question and it is not meaningless .... but nowhere in the literature is there a transformer with two primary windings .... I did not find one ... but the idea is very simple - we know from theory that the primary current creates a magnetic flux that induces EMF in the secondary ... So ? And this emf is linearly proportional to the magnetic flux ... if the second one is the same primary to excite another magnetic flux in the same phase - then they should eventually add up - right? Those. the total flow will double - So ....? That is, in the end, the EMF will double twice as well ... right? So far, everything is in accordance with the theory .... well, once the voltage has doubled - then, with all the others, they are equal - the power has increased 4 times - So? What do we have - two sources of 100% power in the primary - that is, 200% at the input and output we have 400% - which contradicts the theory? and the power P = U ° [2] / R is the quadratic dependence ...
Refute pliz. ..only without options - like ON THE EXIT, IT CANNOT BE MORE THAN ON THE ENTRANCE ..... ..
Basil! will go to the author, let me know, I want to laugh too.
Two transformers. One increases the current, the other voltage. At the output we connect through the oscillator. Just a thought. We need to develop this direction ..