On the energy efficiency of electromechanical systems with an electromagnetic vibration exciter

Abstract

Study shake the phenomena in the electromechanical systems (EMS) are presented by permanent interest for the wide circle of researchers. The most effective source of vibrations in many cases is an electromagnetic causative vibration exciters (EMCV) in that there is transformation of electric power to energy of mechanical vibrations, that is related to the change of inductance. Electromagnetic vibration exciters have a number of significant advantages over other types of exciters. Due to the absence of rubbing parts they have high reliability and durability. They allow you to smoothly adjust the amplitude of vibrations over a wide range. EMCV are easy to integrate into production lines, they have easy maintenance, low operating costs and extensive automation capabilities. This phenomenon presents interest at development of electromechanics devices for intensive vibrotechnologies. Especially development guided on frequency of resonant EMCV promotes the economy of consumption of electric power and productivity of vibrotechnique. To the article the results of theoretical and experimental researches are driven on the increase of energy efficiency of EMCV and determination of output-input ratio. It is shown that losses of electric power in EMS with EMCV related to the origin of permanent constituents and ultra-harmonics of current, choice of magnetic chain and dynamic.

Improving the quality of 0.4 kV electricity in household appliances due to voltage regulation

“…It is known that, by controlling the thyristor triggering moment, it is possible to influence the shape of the load current curve. If the phase shift φ between the beginning of the "positive" half-cycle of the anode voltage and the beginning of the forward current flow is zero, the shape of the load current curve will be sinusoidal [20][21][22][23].…”

“…For many electrical installations, this is not the nominal mode of operation. To ensure the sinusoidal shape of the current and voltage curves on the load, it is necessary to achieve the opening of the thyristor when the current passes through zero [21][22][23].…”

“…Thus, terminating the access of the control signal to the power thyristor, i.e. the switching off of the power thyristor is achieved as soon as the load current passes through zero [22,[35][36][37].…”

A Conceptual Research on the Contribution of Integrated Management Systems to the Circular Economy

“…Reading the title and abstract reduced the baseline sample to 29 papers. This phase excluded many papers, as they did not consider the keywords used in the string in the sense of this studye.g., EMS as abbreviation for environmental management systems-but rather concerned topics such as "closed-loop control of shipboard integrated power system" [93], "electromagnetic wave shielding (EMS)" [94], or "phenomena in the electromechanical systems (EMS)" [95]. Such 'abbreviation duplicates' are common in academia and cannot be fully prevented by the choice of keywords.…”

Analysis of reactive power consumption “Denav oil extraction plant”

“…The efficiency of production largely depends on the quality of raw materials supplied for processing (seed oil content), weediness, spoilage, as well as on the degree of provision of the enterprise with the necessary raw materials in the right amount [1,[22][23][24][25].…”