Losses on transformers in service are essentially fixed, unless the transformer is rebuilt for some reason. However, two different methods for managing transformer losses in service have been developed in recent years. One method which is applicable mainly to larger transformers is use of the ...
阅读PDF 6 被引用 · 0 笔记 引用 Winding loss calculation with multiple windings, arbitrary waveforms, and two-dimensional field geometry Charles R. Sullivan Jan 2003 A method for calculating eddy-current (proximity-effect) losses in transformer and inductor windings is introduced. The new method ...
Keywords power supply system static characteristics asynchronous and synchronous motors transformer load power steady-state regime power losses software package View PDFReferences 1 K Locmelis, U Bariss, D Blumberga Latvian Energy Policy on Energy Intensive Industries Energy Procedia, 113 (2017), pp. ...
In fact, when the transformer is discharged, the primary inductance starts resonating with CDrain and the oscillation period is: TRES ≈ 2π ⋅ √Lp⋅CDrain (26). Turn-on losses depend on the input voltage in a non-monotonic way. As shown in fig....
In FIG. 1, a transformer or other multi-winding device 110 receives three-phase, medium-voltage power at its primary winding 112, and delivers power to a load 130 such as a three-phase AC motor via an array of single-phase inverters (also referred to as power cells). Each phase of ...
Eddy Current Losses in Transformer Windings and Circuit Wiring Lloyd H. Dixon, Jr. Introduction As switching power supply operating fre- quencies increase, eddy current losses and parasitic inductances can greatly impair circuit performance. These high frequency effects are caused by the magnetic ...
In large rating transformer, the stray losses constitute about 20-25% of the total load losses. Designers adopt various cost-effective measures to minimize the losses and make the transformer more efficient. This Stray Losses we can reduce by using Edge-wise Magnetic Shielding. These losses could...
The most important criterion of a transformer cover plate design is to decrease hot spot temperature caused by stray magnetic field. It can be significantly achieved by reducing the cover plate losses using a suitable geometry of stainless steel insert (SSI). This study proposes a 3D Finite ...
By reducing the regular occurred power loss in the transformer, economy of the power sector and global environmental impact can be improved.MR.JAY N. RATHODMR .N.R.SUCHAKMR .V.R.AVALANIMR .T.V.RABARI
Drawbacks to this approach include 1) that measuring current involves either an expensive current transformer, or a resistive sense element in the high current loop which increases damping and impacts system efficiency, and 2) the resistance of the coil should be known (which limits design freedom...