The results of a pilot study model sample of the slot-less PMSM showing that, firstly, due to the reduction of magnetic losses increases the upper operating level the speed of rotation, and secondly, long electromagnetic torque is approximately 70% of the torque of the conventional PMSM.
Based on the principle of "from mathematics to manufacturing" in the conclusion about the possibility of producing transducers with standardized equipment, which will be convenient in operation and repair, training of staff.
The paper presents the possibility of using an asynchronous motor with a phase rotor as the synchronous generators for backup power sources. On the basis of the thermal equivalent circuits invited to determine the allowable current of the rotor winding and, accordingly, the synchronous power generator.
In article the analysis of possible options of restoration of the power equipment is given and the conclusion is drawn on prospects of performance of such works with the help of composite materials. Data on technical characteristics of composite repair materials of different function are submitted and technological features of repairs of the power equipment are given.
The article presents the results of experimental studies features modes of craft supply systems containing power-consuming equipment with non-linear current-voltage characteristics. In the production of concrete articles using a conveyor system in the production process, we use modern frequency electric drive because of asynchronous motors with squirrel-cage rotor.
This article focuses on the draft efficient electricity supply for large storage space, reliability of electricity supply, difficulties in selection of required equipment and ways to overcome them. In such projects the technical side of cooperation with the equipment manufacturer for many companies is becoming prevalent. When you select a vendor carefully studies the conditions of the contract, the quality of the equipment and, of course, price, which becomes particularly significant criterion in times of crisis.
Presents excerpts of an ongoing project exploring the possibility of setting protection using their detailed models tailored to specific input and output processes in SP.
Single-phase ground faults is a main type of damage in the distribution network. A mode of single-phase ground fault is not an emergency in these networks, so most of protection from single-phase ground fault is currently used with the action on the signal. Prolonged work in mode of single-phase ground fault may cause circuit at another point and transition a single-phase ground fault into a more serious type of fault – a double earth fault. In this paper the investigate the use of local components and method of localization for the problem of determining the locations of double earth faults.
The purpose of the work is mathematical modeling of the barrier discharge in the ozone generation systems. The proposed model allows to investigate the effect of the electrode resistance on the ozone synthesis in ozonizers with different electrode constructions. By means of oscilloscope researches of the microdischarges which have different resistances of the discharge circuit the mathematical modeling results are confirm its physical law.
The article tells about the invention developed at the Department of «Nuclear Energy and Renewable Energy Sources». It refers to hydropower and can be used to generate electricity from the movement of waves in large bodies of water, seas or oceans. The invention is directed to a mobile, easy-on design device, making the most of the potential and kinetic energy of the waves.
Materials for insulation of oil-immersed power transformers are considered as one of the priorities of development in high voltage electrical engineering and power. Modern materials for insulation of power transformers allow us to increase the service life and operation, to prevent disastrous consequences and outages, and to ensure a reliable supply of electricity.
Due to electroreceivers list made in real apartment the UPQI measurement was held which allowed to determine lamps energy consumption and their total daily working costs. The study of lamps characteristics is shown. The lighting devices with greatest energy consumption are allocated in accordance with which the ways of optimization of expenses on light are offered.
