scholarly journals Ensuring Energy Safety of the Biological Separation Shop

2021 ◽  
Author(s):  
V.A. Kim ◽  
◽  
Ya.M. Kashin ◽  
M.S. Khristoforov ◽  
◽  
...  
Keyword(s):  
Solar Energy ◽  
High Efficiency ◽  
Asynchronous Motor ◽  
Electrical Equipment ◽  
Electricity Supply ◽  
Power Sources ◽  
Three Phase ◽  
Liquid Systems ◽  
Solar Generator ◽  
Power Limit

The article considers ways to solve the problem of ensuring the energy safety of separation workshops of biological industries using the example of the Armavir Biofabrika PKP. The existing power limit does not allow increasing output. At the same time, a sufficient level of electricity supply at the existing facilities of the biofabric will allow to double the output of finished products practically. You can solve this problem using additional or redundant power sources, as well as high-efficiency electrical equipment. One solution to the problem may be to use the developed synchronized axial two-way contactless wind-solar generator and separator for polydisperse liquid systems. The designed generator will transform wind and solar energy into AC electricity, while it can be synchronized with an external three-phase AC system. Separator uses inevitable heat loss of asynchronous motor to preheat separated product.

scholarly journals Optimized Solar Energy Power Supply for Remote Wireless Sensors Based on IEEE 802.15.4 Standard

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Ondrej Krejcar ◽  
Miroslav Mahdal
Keyword(s):  
Solar Energy ◽  
Power Supply ◽  
Wireless Sensors ◽  
High Efficiency ◽  
Ieee 802.15.4 ◽  
Weather Conditions ◽  
Solar Panel ◽  
Power Sources ◽  
Reliable Power Supply ◽  
Ieee 802.15.4 Standard

Powering of intelligent wireless sensors without a permanent electric connection is a general problem which is often solved by adopting alternative power sources. One of the most commonly used sources is solar energy in the form of solar panel and charging circuits. However, it is not possible to find a solution in the markets for operation in changeable weather conditions, where sun intensity is not so high. This fact leads us to the development of optimized solar panel and all circuits for reliable power supply of wireless sensors. A special charging circuit for Li-ION battery and DC-DC adapter circuit for stabilization of wireless sensor working voltage were developed and optimized for very low energy consumption and high efficiency.

The Software Solution of the Overload Capacity of a Three-Phase Asynchronous Motor

2020 ◽  
Author(s):  
Rano Gazieva ◽  
Sharafidin Aynakulov ◽  
Aziz Nigmatov ◽  
Barna Rakhmankulova ◽  
Otabek Khafizov ◽  
...  
Keyword(s):  
Asynchronous Motor ◽  
Three Phase ◽  
Overload Capacity

scholarly journals Optimization of Air Gap Length and Capacitive Auxiliary Winding in Three-Phase Induction Motors Based on a Genetic Algorithm

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4407
Author(s):  
Mbika Muteba
Keyword(s):  
Genetic Algorithm ◽  
Design Process ◽  
Power Factor ◽  
High Speed ◽  
High Efficiency ◽  
Air Gap ◽  
Element Analysis ◽  
Three Phase ◽  
High Torque ◽  
Cage Induction Motor

There is a necessity to design a three-phase squirrel cage induction motor (SCIM) for high-speed applications with a larger air gap length in order to limit the distortion of air gap flux density, the thermal expansion of stator and rotor teeth, centrifugal forces, and the magnetic pull. To that effect, a larger air gap length lowers the power factor, efficiency, and torque density of a three-phase SCIM. This should inform motor design engineers to take special care during the design process of a three-phase SCIM by selecting an air gap length that will provide optimal performance. This paper presents an approach that would assist with the selection of an optimal air gap length (OAL) and optimal capacitive auxiliary stator winding (OCASW) configuration for a high torque per ampere (TPA) three-phase SCIM. A genetic algorithm (GA) assisted by finite element analysis (FEA) is used in the design process to determine the OAL and OCASW required to obtain a high torque per ampere without compromising the merit of achieving an excellent power factor and high efficiency for a three-phase SCIM. The performance of the optimized three-phase SCIM is compared to unoptimized machines. The results obtained from FEA are validated through experimental measurements. Owing to the penalty functions related to the value of objective and constraint functions introduced in the genetic algorithm model, both the FEA and experimental results provide evidence that an enhanced torque per ampere three-phase SCIM can be realized for a large OAL and OCASW with high efficiency and an excellent power factor in different working conditions.

Bio-inspired vertically aligned polyaniline nanofiber layers enabling extremely high-efficiency solar membrane distillation for water purification

2021 ◽  
Author(s):  
Yubing Peng ◽  
Yunjie Wang ◽  
Wenwei Li ◽  
Jian Jin
Keyword(s):  
Solar Energy ◽  
Water Purification ◽  
High Efficiency ◽  
Membrane Distillation ◽  
Water Efficiency ◽  
Microfiltration Membrane ◽  
Vertically Aligned ◽  
Polyaniline Nanofiber

A bio-inspired PANI nanofiber layer was fabricated on the surface of a hydrophobic PVDF microfiltration membrane for solar-driven distillation. This membrane possesses high solar energy-to-collected water efficiency for freshwater production under one sun irradiation.

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