Increase of power efficiency of electric traction of freight trains

A. Afanasov; S. Arpul

doi:10.15802/ecsrt2017/137708

Increase of power efficiency of electric traction of freight trains

ELECTROMAGNETIC COMPATIBILITY AND SAFETY ON RAILWAY TRANSPORT ◽

10.15802/ecsrt2017/137708 ◽

2017 ◽

Vol 0 (14) ◽

Author(s):

A. Afanasov ◽

S. Arpul

Keyword(s):

Power Efficiency ◽

Electric Traction

Download Full-text

Electric Traction on Tramway and by Accumulators

Scientific American ◽

10.1038/scientificamerican04131889-11072supp ◽

1889 ◽

Vol 27 (693supp) ◽

pp. 11072-11073

Keyword(s):

Electric Traction

Download Full-text

High-Speed, Long-Distance Electric Traction

Scientific American ◽

10.1038/scientificamerican06171905-24627supp ◽

1905 ◽

Vol 59 (1537supp) ◽

pp. 24627-24628

Author(s):

Charles A. Mudge

Keyword(s):

High Speed ◽

Long Distance ◽

Electric Traction

Download Full-text

Electric Traction by Monophase Current

Scientific American ◽

10.1038/scientificamerican12261903-23401supp ◽

1903 ◽

Vol 56 (1460supp) ◽

pp. 23401-23402

Author(s):

Emile Guabini

Keyword(s):

Electric Traction

Download Full-text

Effect of Shielding a Floating Electrode on the Power Efficiency of a Micro-plasma VUV Light Source

IEEJ Transactions on Sensors and Micromachines ◽

10.1541/ieejsmas.135.114 ◽

2015 ◽

Vol 135 (3) ◽

pp. 114-115 ◽

Cited By ~ 1

Author(s):

Ryoto Sato ◽

Daisuke Yasumatsu ◽

Shinya Kumagai ◽

Masaru Hori ◽

Minoru Sasaki

Keyword(s):

Light Source ◽

Power Efficiency ◽

Floating Electrode

Download Full-text

EXPERIMENTAL AND ANALYTICAL STUDIES OF VERTICAL AXIS WIND TURBINES

Alternative Energy and Ecology (ISJAEE) ◽

10.15518/isjaee.2018.22-24.051-058 ◽

2018 ◽

pp. 51-58

Author(s):

B. P. Khozyainov

Keyword(s):

Wind Turbine ◽

Flow Velocity ◽

Wind Power ◽

Wind Turbines ◽

Power Efficiency ◽

Air Flow ◽

Geometrical Parameters ◽

Wind Speeds ◽

Analytical Studies ◽

Air Flow Velocity

The article carries out the experimental and analytical studies of three-blade wind power installation and gives the technique for measurements of angular rate of wind turbine rotation depending on the wind speeds, the rotating moment and its power. We have made the comparison of the calculation results according to the formulas offered with the indicators of the wind turbine tests executed in natural conditions. The tests were carried out at wind speeds from 0.709 m/s to 6.427 m/s. The wind power efficiency (WPE) for ideal traditional installation is known to be 0.45. According to the analytical calculations, wind power efficiency of the wind turbine with 3-bladed and 6 wind guide screens at wind speedsfrom 0.709 to 6.427 is equal to 0.317, and in the range of speed from 0.709 to 4.5 m/s – 0.351, but the experimental coefficient is much higher. The analysis of WPE variations shows that the work with the wind guide screens at insignificant average air flow velocity during the set period of time appears to be more effective, than the work without them. If the air flow velocity increases, the wind power efficiency gradually decreases. Such a good fit between experimental data and analytical calculations is confirmed by comparison of F-test design criterion with its tabular values. In the design of wind turbines, it allows determining the wind turbine power, setting the geometrical parameters and mass of all details for their efficient performance.

Download Full-text