The calculation of stepper and synchronous electric motors for automobile electric drives

2007 ◽  
Vol 78 (5) ◽  
pp. 249-255
Author(s):  
V. V. Kozlov
Keyword(s):  
Electric Motors ◽  
Electric Drives

scholarly journals Computer Modeling of Pumping Station with Unregulated Electric Drive

2020 ◽  
Vol 220 ◽  
pp. 01039
Author(s):  
Shakhboz Dadabaev ◽  
Elena Gracheva
Keyword(s):  
Electric Drive ◽  
Electromagnetic Torque ◽  
Electric Motors ◽  
Motor Speed ◽  
Electric Drives ◽  
Pumping Station ◽  
Soft Start ◽  
Soft Starter ◽  
Pumping Units ◽  
Static Torque

The results of the analysis of transient and technological processes of the irrigation pumping station of the first lift, taking into account the negative starting effects on the synchronous electric drive, are considered. The analysis and review of the ways of regulating the performance of the units of the irrigation pumping station of the first lift are made, and the main difficulties of the existing methods of regulating the pump supply are revealed. Computer simulation of starting modes of high-voltage synchronous electric motors with direct and soft start, where soft starter was used for soft start, was carried out. The simulation took into account the changes in the currents of all phases of the electric motor, the electromagnetic torque, the motor speed, the effective value of the current, as well as the static torque. The introduction of semiconductor soft starters for electric drives of high-power pumping units has been substantiated.

Research of Load Unbalance of a Two- Motor Variable Frequency Dtive for Scraper Conveyor

2021 ◽  
Vol 64 (4-5) ◽  
pp. 37-45
Author(s):  
Dmitry Shprekher ◽  
◽  
Gennady Babokin ◽  
Evgeny Kolesnikov ◽  
Dmitry Ovsyannikov ◽  
...  
Keyword(s):  
Load Balancing ◽  
Electric Motor ◽  
Frequency Converter ◽  
Common Type ◽  
Single Frequency ◽  
Variable Frequency ◽  
Electric Motors ◽  
Electric Drives ◽  
Scraper Conveyor ◽  
Simulation Results

The article analyzes the uneven loading of the scraper conveyor electric motors. The most common type of multi-motor conveyor is considered here: two-drive, with head and end drives connected through gearboxes and sprockets by an endless chain with scrapers. The simulation results are presented for three variants of com-binations of parameters of electric drives. It has been established that the use of a two-motor variable frequen-cy drive of a scraper conveyor powered by a single frequency converter inevitably entails uneven loading of the electric motors of the head and end drives. To eliminate this disadvantage, it is proposed to supply each electric motor from its own frequency converter. A system of automatic load balancing is proposed. The implementation and the result of the work of the load balancing system are carried out on a model in the Matlab / Simulink system.

scholarly journals Application of adjustable electric drives with brushless electric motors in arc welding

2017 ◽  
Vol 2017 (7) ◽  
pp. 33-37
Author(s):  
V.A. Lebedev ◽  
◽  
G.V. Zhuk ◽  
I.V. Lendel ◽  
◽  
...  
Keyword(s):  
Arc Welding ◽  
Electric Motors ◽  
Electric Drives

Selection Of Flow Diagrams Of The Adjustable Thyristor Asynchronous Electric Actuator With Phase Control

2020 ◽  
Vol 02 (11) ◽  
pp. 19-24
Author(s):  
Nematjon Akhmatovich Samatov ◽  
Keyword(s):  
Phase Control ◽  
Electric Motors ◽  
Electric Actuator ◽  
Electric Drives ◽  
Control Schemes ◽  
Flow Diagrams ◽  
Theoretical Foundations ◽  
Selection Of ◽  
Asynchronous Electric Motors

This article discusses the use of thyristors and the choice of a circuit in the control of adjustable asynchronous electric motors. The theoretical foundations and practical aspects of using various control schemes for asynchronous electric drives are presented.

scholarly journals Comparative Study of Energy Consumption and CO2 Emissions of Variable-Speed Electric Drives with Induction and Synchronous Reluctance Motors in Pump Units

Mathematics ◽  
2021 ◽  
Vol 9 (21) ◽  
pp. 2679
Author(s):  
Victor Goman ◽  
Vladimir Prakht ◽  
Vadim Kazakbaev ◽  
Vladimir Dmitrievskii
Keyword(s):  
Co2 Emissions ◽  
Induction Motors ◽  
Electricity Consumption ◽  
Electric Motors ◽  
Variable Speed ◽  
Pump Unit ◽  
Electric Drives ◽  
Power Drive ◽  
Design And Manufacturing ◽  
Drive Systems

This study carried out a comparative analysis of indicators of electricity consumption and CO2 emissions for four-pole induction motors (IMs) of efficiency classes IE3 and IE4 with a rated power of 2.2–200 kW in a variable speed pump unit. In addition, innovative IE4 converter-fed synchronous reluctance motors (SynRMs) were evaluated. The comparison was derived from the manufacturer’s specifications for the power drive systems (PDSs) at various rotational speeds and loads. The results showed that the emission indicators for IE3 class motors were significantly worse compared with IE4 class motors for low power ratings, which make up the vast majority of electric motors in service. This justifies expanding the mandatory power range for IE4 motors to at least 7.5–200 kW or even 0.75–200 kW, as it will dramatically contribute to the achievement of the new ambitious goals for reducing greenhouse gas emissions. In addition, the operational advantages of IE4 SynRMs over IE4 IMs were demonstrated, such as their simpler design and manufacturing technology at a price comparable to that of IE3 IMs.

Comparison of Energy Indicators of the Electric Lift Drive of the Ekg-5 Excavator with Different Power Converters

2021 ◽  
Vol 64 (3) ◽  
pp. 53-59
Author(s):  
Eduard Grekov ◽  
◽  
Alexei Bezgin ◽  
Viktor Sorokin ◽  
Ildar Yamansarin ◽  
...  
Keyword(s):  
Electric Motor ◽  
Power Converters ◽  
Frequency Converter ◽  
Electric Motors ◽  
Joint Work ◽  
Two Phase ◽  
Electric Drives ◽  
Three Phase ◽  
Energy Indicators ◽  
Asynchronous Electric Motor

The energy indicators of the EKG-5 excavator lifting electric drive with thyristor power circuits have been determined according to the systems thyristor direct frequency converter - two-phase asynchronous electric motor, converter-DC motor and direct frequency converter - three-phase asynchronous electric motor. Losses in electric motors and converters have been determined, taking into account the specifics of their joint work in theefficiency for the excavation cycle were determined based on the results of calculating the simulation model, the initial data for which were the parameters of the excavation cycle of the lift drive of a real excavator. Distortion coefficients of the mains current were determined for two cases: during digging and during accelerated lowering of an empty bucket. For comparison, the energy indicators of the selected electric drives with a filter-compensating device were calculated. The analysis of energy indicators is made.

Studying Characteristics of Traction Induction Motors for Variable-Speed Mine Electric Locomotive

2015 ◽  
Vol 770 ◽  
pp. 378-383
Author(s):  
Pavel R. Baranov ◽  
Sergey N. Kladiev ◽  
Stanislav V. Borisov ◽  
Alexander A. Filipas
Keyword(s):  
Induction Motors ◽  
Electric Motors ◽  
Variable Speed ◽  
Electric Locomotive ◽  
Electric Drives ◽  
Squirrel Cage ◽  
Speed Up ◽  
Current Characteristics ◽  
Cage Rotor ◽  
Base Design

The analysis of torque-speed characteristics of induction motors has been carried out in order to choose the base design for variable speed traction electric drives of underground mine electric locomotives. For constant dimensions of active part of series-produced electric motors the influence of the diverse conductivity’s materials for manufacturing the squirrel-cage rotor on speed-torque and speed-current characteristics. The designs are compared according to speed-up dynamics, power indexes and key design features of the studied electric motors.

scholarly journals IMPROVEMENT OF DRILLING RIG ELECTRICAL EQUIPMENT

2020 ◽  
Vol 1 (59) ◽  
pp. 12-14
Author(s):  
M. K. Borozdin ◽  
S. S. Nepochatov ◽  
N. O. Primachenko
Keyword(s):  
Mechanical Energy ◽  
Electrical Equipment ◽  
Operating Conditions ◽  
Electric Motors ◽  
Drilling Depth ◽  
Electric Drives ◽  
Drilling Rig ◽  
Wide Range ◽  
Installed Capacity ◽  
Direct Use

The article describes the electrical complex of a modern electric drilling rig. The structure of electrical complexes is caused by a wide range of requirements for the drilling depth, purpose and operating conditions of the drilling rig. The issue of the direct use of the engine, namely, the conversion of various types of energy into mechanical energy, is also considered. Today, in leading industries, the ratio of the installed capacity of electric drives to the total installed capacity of drives with engines of all types (Thermal, hydraulic, pneumatic) is approaching 100%. This is determined by the fact that electric motors are manufactured for various capacities (from hundredths of a watt to tens of thousands of kilowatts) and rotational speeds

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