The paper considers the study of the electromagnetic force (EMF) of a synchronous generator based on the three-phase induction machine. The stand includes: a frequency converter, an induction motor, a synchronous generator, a three-phase rectifier, an active load resistance, power protection and inclusion industrial electrical network. The study provides an analytical solution to one of the main objectives within theoretical foundations of electrical engineering, formulated so to reflect the decision making while designing new types of synchronous generators with permanent magnets.
The digital method of measurement and registration of dynamic loops hysteresis family of magneto-soft materials where, along with known analogues from electro-technical steel, magnetic materials with considerably smaller specific magnetic losses such as amorphous alloys on the basis of iron, is offered. Tests of magnetic properties of materials are carried out on the base of the hardware-software measuring complex in which along with the standard established electric equipment and USB oscillograph for realization of a digital method, the software for the personal computer developed in the environment of visual programming of Borland Delphi 7.0, connected through the ActieveX technology with the Labview 7.0 environment, is applied. The software allows carrying out input of basic data concerning geometry of prototypes of cores from magnetic materials and numbers of rounds of the magnetizing and measuring windings located on their surface. Experimental data on voltage at measuring winding terminals are processed by means of the virtual integrator in a Labview package. The developed software provides the possibility of saving the obtained hysteresis loop in the form of a text file, and creation of the hysteresis loops family on the virtual oscillograph screen.Keywords -digital method of integration of voltage at a measuring winding terminals, a hardware-software measuring complex, family of dynamic loops hysteresis of prototypes made of electrotechnical steel and amorphous alloy on the basis of iron
Urine and saliva are the most accessible liquids for studying circadian oscillations coherent with the activity of ongoing metabolic processes, which are characterized by a change in the rate and direction of the formation of protons (H+) and electrons (ē). The existing balance of acid-base state (pH) and redox potential (Eh) is an important indicator of homeostasis, reflecting the state of energy metabolism, i.e., the process of dissimilation. If the stability of the main (basic) metabolism does not change during the day, then the rate of facultative energy-consuming processes increases significantly during the daytime and decreases at night.Endogenous formation of hydrogen cations (H+) accompanies all transformation reactions of adenosine triphosphate. Thus, glycolysis is accompanied by lactic acidosis of the cytoplasm, and the tricarboxylic acid cycle performs a hydrogen-donor function, supplying protons (H+) to the respiratory chain of mitochondria. At the same time, depending on the rate of oxidative phosphorylation, a certain part of hydrogen cations (H+) is excreted into the intercellular space, from where it subsequently enters saliva and urine.Daily oscillations of pH and Eh in the urine and oral fluid (saliva) of healthy people reflect the circadian rhythm of metabolic processes and can be important indicators of metabolic disorders in common diseases accompanied by impaired energy metabolism.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.