The openings of Copper converter in Sarcheshmeh Copper Complex in Iranis made of a heat resisting austenitic steel (Fe-25Cr-12Ni) and many failures have been reported. Understanding the failure mechanism of the alloy helps to develop better alloys for similar complex environments. Samples of as-cast alloy and those taken from failed ones were examined. Optical Microscopy (OM), X-Ray Diffraction...

An on-going extensive research on multi-level and matrix converters requires physically meaningful easy-to-calculate criteria to compare numerous suggested converter topologies and voltage modulation strategies. Frequency domain voltage Total Harmonic Distortion (THD) criterion approach is too complicated and non-transparent as it involves multiple Fourier integral and results in multiple serie...

A novel approach is proposed for a high step-up and high efficiency converter with a low switch stress. The integrated boost-flyback converter uses coupled-inductor techniques to achieve high step-up voltage with low duty ratio, and thus the slope compensation circuit is disregarded. The proposed circuit topology improving high-gain ratio, increasing efficiency, reducing the secondary side of c...

A diagnosis of the actual distributed control and measurements system for a Teniente Converter, processing copper concentrates is presented. Besides the importance of this converter in Caletones Smelter, there are a number of unsolved problems related to lack of instrumentation, lack of process knowledge, odd operating practices, and in general lack of use of procedures to process data to aid m...

During arc welding, the arc heats and melts the workpiece as heat flux. When the welding current is given, the distribution and the intensity of the heat flux are determined by the length of the arc. The measurement and control of the arc length are fundamental in robotic and automated welding operations. Length of welding arc determines the distribution of the arc energy and thus the heat inpu...

Magnetics devices are an important part of every power electronics converter. Always, the realisation magnetic elements must be connected with converter design. The projects include models and design converter, magnetics too. describes parts for converters is topic this article. In paper, basic theory reviewed, including circuits equation inductor modelling. Power losses in winding conductors a...

In this paper, CM noise suppresion and magnetic elements winding loss optimization design of a cascade power module based on GaN are carried out (the front stage is buck converter, the second LLC resonant converter). To suppress noise, converter adopts planar stagger reverse coupling inductance, by establishing model conduction path model, equivalent capacitance can effectively reduced, thus fu...