eddy current can be reduced by using laminated cores. and also be reducing the thickness of the stampings. transformer iron loss is the combination of eddy current loss and hysterisis loss. both the losses depend on core of the transformer and iron loss is a constant loss.
Excitation current is the current necessary to "turn on" the transformer so it can be used. It's energy that is lost in the use of the transformer. Most of this loss I believe is associated with the hysterisis loop, although some will be lost as eddy currents.
Just like a transformer, the core losses are a combination of eddy current losses and hysteresis losses.
The no load losses are the losses caused by energizing the transformer. These are constant losses, regardless of loading. This in effect tells you the efficiency of the transformer. (Power in) - (no load losses) = (Power out)
Iron losses (Pi) are independent of of load which occur due to pulsation of flux in the core. Iron losses include both Hysteresis loss and eddy current loss and is same at all the loads.
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eddy current can be reduced by using laminated cores. and also be reducing the thickness of the stampings. transformer iron loss is the combination of eddy current loss and hysterisis loss. both the losses depend on core of the transformer and iron loss is a constant loss.
eddy current loss in the transformer core is reduced by
Excitation current is the current necessary to "turn on" the transformer so it can be used. It's energy that is lost in the use of the transformer. Most of this loss I believe is associated with the hysterisis loop, although some will be lost as eddy currents.
Eddy current loss in Transformers is because of the eddy currents formed in the body of the magnetic core.Whenever a conductor(iron core) exposed to a changing magnetic field a magnetc field produced in the body of the magnetic core.That induce a circulating current in it.Which is called eddy current.In the case transformer it is loss.But it is useful in other purposes.
Just like a transformer, the core losses are a combination of eddy current losses and hysteresis losses.
to reduce the eddy current loss in the machine
this type of transformer used special low loss steel to minimize eddy current losses and reduced leakage flux.
Core loss is one of the many fixed losses in a transformer. This means that no matter the loading of the transformer there this loss would be fixed unlike copper loss which depends on the loading of the transformer.
Copper loss means the loss due to the resistance of conductor of any device. Core loss means the loss due to eddy current and hysterisis of flux. So the total loss of a transformer menas copper loss+core loss. Therefore just knowing the core loss the copper loss can not be deduced. These are being two different and not interrelated losses the value of one of them will not make way to find the other. I hope the answer is clear enough otherwise please write again
The alternating current flowing through transformer windings changes its polarity with each reversal of the current polarity, simultaneously changing the orientation of the induced magnetic poles within the core material. This constant fluctuation creates heat and other undesirable effects within the transformer, reducing its efficiency. Transformer cores are made of laminated steel or iron to minimize the effects of this electromagnetic phenomenon, which is known as hysteresis.AnswerThe alternating current flowing through a transformer's primary winding induces voltages into the transformer's core, as well as in the secondary winding. The voltages induced into the core create currents that circulate within the core -these are called 'eddy currents'. Laminating the core reduces the effective cross-sectional areas through which the eddy currents circulate, thus increasing the resistance to those currents, and reducing the associated losses (eddy-current losses). In addition to this, laminations allow the transformer core to be assembled much more easily than using solid cores.
The no load losses are the losses caused by energizing the transformer. These are constant losses, regardless of loading. This in effect tells you the efficiency of the transformer. (Power in) - (no load losses) = (Power out)