Determination of the Thermal Convection Coefficient for a Small Electric Motor

2006 ◽  
Author(s):  
Miroslav Markovic ◽  
Laurie Saunders ◽  
Yves Perriard
Keyword(s):  
Thermal Convection ◽  
Electric Motor ◽  
Convection Coefficient

Indirect determination of the displacement components in an electric motor drive

2015 ◽  
Vol 86 (12) ◽  
pp. 716-718 ◽  
Author(s):  
T. A. Funk ◽  
N. M. Saprunova ◽  
E. V. Belousov ◽  
A. M. Zhuravlev
Keyword(s):  
Electric Motor ◽  
Motor Drive ◽  
Indirect Determination ◽  
Electric Motor Drive

scholarly journals CONTROLLED TESTING OF BELT TRANSMISSIONS AT DIFFERENT LOADS

2021 ◽  
Vol 2021 (6) ◽  
pp. 5497-5501
Author(s):  
JOZEF MASCENIK ◽  
◽  
SLAVKO PAVLENKO ◽  
Keyword(s):  
Electric Motor ◽  
Analytical Calculation ◽  
Limit States ◽  
Belt Drives ◽  
Extreme Loads ◽  
Extreme Load ◽  
Monitoring And Diagnostics ◽  
Moment Set ◽  
Frequency Inverter

The presented paper provides the alternative options for determining the condition of belt gear based on the testing and monitoring. In order to carry out experimental measurements, a newly developed device for testing, monitoring and diagnostics of belt drives was designed, as well as the possibility of determination of limit states by extreme loads. The designed measuring stand allows to determine the point of destruction of the belt for an extreme load. The process of the belt measurement was to set the predetermined input revolutions of the driving motor by means of the Altivar 71 (FM1) frequency inverter connected to the driving electric motor. The next step in defining the input parameters was to set the load on the driven electric motor. The load on the driven motor was achieved by the torsional moment set by means of the Altivar 71 (FM2) frequency inverter connected to the driven electric motor. In the paper, the analytical calculation is processed. The article mainly points to the innovation of the stand for testing belt transmissions.

scholarly journals Electromechanical secateurs based on linear electric motor and determination of cutting force of branches of fruit trees

2018 ◽  
Author(s):  
Sergey Antonov ◽  
Gennady Nikitenko ◽  
Vitaly Grinchenko ◽  
Anatoly Molchanov ◽  
Valentina Avdeeva
Keyword(s):  
Cutting Force ◽  
Electric Motor ◽  
Fruit Trees

scholarly journals Comparison of two measurement methods for the determination of extended turbine maps at the eATL test bench of the Ostfalia UAS

2017 ◽  
Vol 169 (2) ◽  
pp. 43-48
Author(s):  
Robin VANHAELST ◽  
Caroline BANNACK ◽  
Maik KLOSE
Keyword(s):  
Electric Motor ◽  
Test Bench ◽  
Measurement Methods ◽  
Low Speed ◽  
Heat Flows ◽  
Turbine Efficiency ◽  
Graphical Comparison ◽  
Measurement Results ◽  
Adiabatic Processes

This document compares two measurement methods for the determination of extended turbine maps. One method is to minimize heat flows and thus to maintain the assumption of adiabatic processes even in low speed ranges of turbines. The results obtained were compared with those of the Ostfalia eATL method. Here, is slowed down electrically by an electric motor. The direct comparison of the measurement results shows considerable differences in the turbine efficiency. Furthermore, the graphical comparison illustrates clear advantages of the eATL concept for the evaluation, which result from the width and the position of the generated measurement points.

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