Designing of the output stage of the impulse power source

Pavlenko, A. V.; Vasyukov, Ivan; Puzin, V. S.; Grinchenkov, V. P.; Bolshenko, A. V.

doi:10.3103/s1068371215080106

Cited by 14 publications

(2 citation statements)

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“…Shows the electrical machines used in wind turbines which use gear reduction in this manner to convert a relatively slow turbine blade speed to a high speed capable of generating electricity. These applications use gearboxes that are assembled opposite of those in applications that reduce speed and increase torque [10].…”

Section: B Reduction Of Gearboxmentioning

confidence: 99%

Optimal Generation of Output Torque for Industrial Motors using Variable Frequency Drive and Gearbox Drive

Francis*,

Karthikeyan,

Balasundaram

et al. 2019

IJRTE

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This paper depicts the exploration of output torque of Gear reduction drive and variable frequency drive (VFD) with detailed analysis report for the various load conditions. The right selection of VFD will depend on the load requirement and application. The higher the load therefore more torque needed in an application, the higher the current draw of the motor will be. Since VFDs are rated by their continuous output current (amps), it is important to select a drive with adequate current to the motor for optimal performance. The property of Torque is converse effect of gear reduction. By means of gear ratio, the output torque is increased by developing the torque with reduced efficiency losses. On the other hand, in some applications the gear reduction play a vital role in reduces the speed while increase the torque and in many other applications it uses to increase speed with reduced torque. In recent era, many industrial drives are designed as such that to run at 60% to 100% of rated load. In this scenario the drive would get optimum efficiency is generally obtained nearly 75% of rated load. Thus, a 20 horsepower (HP) electric drive has a satisfactory load range of 12 to 20 HP with optimum efficiency is at 7.5 HP. A motor’s efficiency tends to decrease dramatically below about 50% load. Hence it’s very important to choose the drive for the proper application with different loading conditions

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Section: B Reduction Of Gearboxmentioning

confidence: 99%

Optimal Generation of Output Torque for Industrial Motors using Variable Frequency Drive and Gearbox Drive

Francis*,

Karthikeyan,

Balasundaram

et al. 2019

IJRTE

View full text Add to dashboard Cite

show abstract

“…Simplified waveforms (Figure 1, (1)) of current and velocity correspond to the original case mechanical characteristics of the closed system of the drive. Softening this feature allows reducing the RMS armature current to the average value (Figure 1 (2)), thereby reducing the amount of electric losses in the armature chain [14].…”

Section: Softening Mechanical Characteristics Of the Drive Closed Systemmentioning

confidence: 99%

Energy efficiency improvement of electric drive of cold pilgering mill

Sychev

Savosteenko

Gryzlov

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Different ways to improve the energy efficiency of electric drives of cold pilgering mill are considered. Mathematical modeling methods represent studies according to which it is possible to evaluate quantitatively the energy savings. For example, cold pilgering mill 450 shows the mean square of the armature current of the main drive motor related to critical frequency of the speed loop. The possibility of energy saving by previous field weakening of the motor before the operating cycle of rolling is considered. The optimal energy saving points of supply and termination of the pulse are determined by the field weakening. The correlation of the parameters of the dynamic units and the change of the electric drive work schedule provides the greatest loss reduction in the main drive of the cold pilgering mill stand based on the conditions. Activities aimed at improving energy efficiency of electric drives of mills of this group are reviewed, which reduces the electric energy consumption for the cycle rolling by 20-25 %.

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