ENERGY-SAVING ELECTRIC DRIVE OF A DRY DOCK DEWATERING PUMPS BASED DIFFERENTIAL CASCADE

2016 ◽  
Vol 22 (98) ◽  
pp. 200-210
Author(s):  
Paul E. Hristo ◽  
Keyword(s):  
Energy Saving ◽  
Electric Drive ◽  
Dry Dock

ENERGY-SAVING MODE OF OPERATION OF THE ELECTRIC DRIVE OF THE OIL CROPS CHOPPER

2019 ◽  
Vol 5 (1) ◽  
pp. 8-12
Author(s):  
Matkarim Ibragimov ◽  
◽  
Gulnoz Ergasheva
Keyword(s):  
Energy Saving ◽  
Electric Drive ◽  
Oil Crops ◽  
Mode Of Operation ◽  
Saving Mode

scholarly journals Innovative approaches and methods to the implementation of energy-saving measures and technologies at mining enterprises

2021 ◽  
Vol 288 ◽  
pp. 01109
Author(s):  
Alexander Semenov ◽  
Yuriy Bebikhov ◽  
Ayaal Egorov ◽  
Vladislav Shevchuk ◽  
Marina Glazun ◽  
...  
Keyword(s):  
Power Consumption ◽  
Mathematical Simulation ◽  
Energy Saving ◽  
Electric Drive ◽  
Economic Benefit ◽  
Energy Savings ◽  
Reactive Power ◽  
Specific Power ◽  
Specific Power Consumption ◽  
Instrumental Monitoring

The paper presents the evaluation of the implementation of innovative methods of energy savings in electric drive and power supply systems at mining enterprises. The evaluation involves mathematical simulation and instrumental monitoring of the defined indicators that allow obtaining a multiplier economic benefit through the appropriate approach to the implementation and subsequent exploitation of energy-saving technologies. For this purpose, the potential of energy savings in industry in general, and at mining enterprises in particular, is shown. Such indicators as power consumption in mining, the dynamics of power losses in public grids, specific power consumption for lighting and household needs, specific power consumption for lifting and supplying water, as well as for sewage treatment were evaluated. As an example, such measures as reactive power compensation, the introduction of frequency-controlled electric drive systems, the development and implementation of the systems for continuous monitoring of power quality indicators were considered pointwise (at some sites of enterprises). The mathematical simulation method was implemented using the MatLab software package. The instrumental monitoring was carried for 7 days with a ten-minute interval. As a result of the assessment of such measures, the total economic benefit approaching to 9.0 million rubles a year was obtained.

Energy Saving in Pilger Mill Electric Drives Complete Solution

2017 ◽  
Vol 8 (4) ◽  
pp. 1673 ◽  
Author(s):  
Yuriy Usynin ◽  
Dmitry Sychev ◽  
Nikita Savosteenko
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Electric Drive ◽  
Control Method ◽  
Economic Effect ◽  
High Energy ◽  
Variable Load ◽  
Electric Drives ◽  
Reluctance Machine ◽  
Drive Control

This paper considers issues related to increasing energy efficiency in electric drives of pilger rolling mills, presenting kinematics of such mills, provides justification for the general load chart, presents the detailed review of reference materials on technical energy saving solutions, and suggests a math model of an electric drive with a field regulated reluctance machine. The paper suggests key methods of saving energy in electric drives of pilger mills, namely: kinematic scheme improvement; main energy drainers and ways of energy loss reduction in electric drives with direct- and alternate-current motors, energy-saving electric drive control profiles. The article compares energy-saving resources in electric drives with various-type motors (direct-current motors, synchronous motors, and field regulated reluctance machine), clarifies the scheme of energy-saving resource implementation, provides the qualitative evaluation of electric drive control method efficiency. The accent is made on high energy efficiency of the proportionate control of armature and excitation circuits and across the range of torque in electric drives of abruptly-variable-load mills. The highest economic effect is reached in the electric drive with a field regulated reluctance machine – by means of implementing the energy-efficient electromechanical converter and applying energy-saving control profiles.

scholarly journals Energy saving system of cascade variable frequency induction electric drive

2019 ◽  
Vol 124 ◽  
pp. 01037 ◽  
Author(s):  
V. N. Meshcheryakov ◽  
D. V. Lastochkin ◽  
Z.M. Shakurova ◽  
S. Valtchev
Keyword(s):  
Energy Saving ◽  
Electric Drive ◽  
Block Diagram ◽  
Electrical Circuit ◽  
Variable Frequency ◽  
Variable Frequency Drive ◽  
Stator Current ◽  
Static Mechanical ◽  
Saving Mode ◽  
Induction Electric Drive

This paper discusses the wound rotor induction motor and variable-frequency drive (VFD) that regulates the stator voltage frequency. The stator and rotor windings are connected to a common electrical circuit. The slip energy of the motor goes to the DC link and feeds the stator winding of the motor. The block diagram of the electric drive, the equivalent circuit and the basic characteristic of the cascade VFD are considered. It is shown that the energy-saving mode with a minimum ratio “stator current/torque” is achieved at an angle between vectors of the stator current and the excitation current at the level of 45 degrees. The experimental static mechanical characteristics of the electric drive were obtained. These characteristics provide a limitation of the starting torque.

A new-generation energy-saving industrial controlled electric drive

2007 ◽  
Vol 78 (11) ◽  
pp. 611-616
Author(s):  
R. T. Shreiner ◽  
V. K. Krivovyaz ◽  
A. I. Kalygin ◽  
S. I. Shilin
Keyword(s):  
Energy Saving ◽  
Electric Drive ◽  
New Generation
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