scholarly journals New concept of electrical drives for paper and board machines based on energy efficiency principles

2006 ◽  
Vol 10 (4) ◽  
pp. 63-78
Author(s):  
Borislav Jeftenic ◽  
Sasa Statkic ◽  
Milan Bebic ◽  
Leposava Ristic
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Frequency Converter ◽  
System Control ◽  
Paper Machine ◽  
Squirrel Cage ◽  
The Press ◽  
Before And After ◽  
Cage Induction Motor ◽  
And Control

In this paper, it is described how the reconstruction of the facility of paper machine has been conducted, at the press and drying part of the machine in June 2001, as well as the expansion of the Paper Machine with the "third coating" introducing, that has been done in July 2002, in the board factory "Umka". The existing old drive of the press and the drive of drying groups were established as a Line Shaft Drive, 76 m long. The novel drive is developed on the basis of conventional squirrel cage induction motor application, with frequency converter. The system control is carried out with the programmable controller, and the communication between controllers, converters, and control boards is accomplished trough profibus. Reconstruction of the coating part of the machine, during technological reconstruction of this part of the machine, was being conducted with a purpose to improve performance of the machine by adding device for spreading "third coating". The demands for the power facility were to replace existing facility with the new one, based on energy efficiency principles and to provide adequate facility for new technological sections. Also, new part of the facility had to be connected with the remaining part of the machine, i.e. with the press and drying part, which have been reconstructed in 2001. It has to be stressed that energy efficiency principles means to realize new, modernized drive with better performances and greater capacity for the as small as possible amount of increased installed power of separate drives. In the paper are also, graphically presented achieved energy savings results, based on measurements performed on separate parts of paper machine, before and after reconstruction. .

scholarly journals New drive and control concept of the paper-board machine at the board factory "Umka"

2004 ◽  
Vol 58 (5) ◽  
pp. 240-245
Author(s):  
Borislav Jeftenic ◽  
Milan Bebic ◽  
Miodrag Milojevic ◽  
Mario Belincevic
Keyword(s):  
Paper Machine ◽  
Frequency Converters ◽  
Dc Motors ◽  
Squirrel Cage ◽  
Long Line ◽  
The Press ◽  
Control Concept ◽  
Thyristor Converters ◽  
Drive And Control ◽  
And Control

This paper describes the reconstruction of the drives of a paper machine for the press and drying part of the machine during June, 2001, as well as the expansion of the paper machine with a "third coating" during July, 2002 at the board factory "Umka". The existing old drive of the press and the drying groups was realized as a 76 meter long line shaft drive. The coating section of the machine was realized with sectional drives with DC motors fed from thyristor converters. The concept of the new drive is based on standard squirrel cage induction motors, fed from frequency converters. The system is controlled by a programmable logic controller. The communication between the controller, frequency converters and control panels is realized with a profibus protocol. The Laboratory for Electric Drives, of the Faculty of Electrical Engineering, Belgrade, was contracted for the drive part of the reconstruction of the paper-board machine. The complete project, supervision of the work of the investor's own technical services and final commissioning of the drives were organized in such a way that the drives were changed during the planned periods for the repair of the machine.

scholarly journals Real-World Implementation of an ICT-Based Platform to Promote Energy Efficiency

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2416
Author(s):  
Marina Dorokhova ◽  
Fernando Ribeiro ◽  
António Barbosa ◽  
João Viana ◽  
Filipe Soares ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Real World ◽  
Energy Savings ◽  
Quality Parameters ◽  
Horizon 2020 ◽  
Flexible Devices ◽  
Information And Communication ◽  
Energy Consuming ◽  
And Behavior ◽  
And Control

The energy efficiency requirements of most energy-consuming sectors have increased recently in response to climate change. For buildings, this means targeting both facility managers and building users with the aim of identifying potential energy savings and encouraging more energy-responsible behaviors. The Information and Communication Technology (ICT) platform developed in Horizon 2020 FEEdBACk project intends to fulfill these goals by enabling the optimization of energy consumption, generation, and storage and control of flexible devices without compromising comfort levels and indoor air quality parameters. This work aims to demonstrate the real-world implementation and functionality of the ICT platform composed of Load Disaggregation, Net Load Forecast, Occupancy Forecast, Automation Manager, and Behavior Predictor applications. Particularly, the results obtained by individual applications during the test phase are presented alongside the specific metrics used to evaluate their performance.

Analysis and control of dual stator winding induction motor

2012 ◽  
Vol 61 (3) ◽  
pp. 421-438 ◽  
Author(s):  
Krzysztof Pieńkowski
Keyword(s):  
Control Systems ◽  
Induction Motor ◽  
Direct Torque Control ◽  
Torque Control ◽  
Stator Winding ◽  
Vector Form ◽  
Squirrel Cage ◽  
Squirrel Cage Induction Motor ◽  
Cage Induction Motor ◽  
And Control

Analysis and control of dual stator winding induction motor The paper presents the mathematical models of dual stator squirrel-cage induction motor, formulated in phase coordinate system and in general transformed space vector form. The two types of models of dual stator induction motor are considered. The control systems of field-oriented control (IFOC and DFOC) and direct torque control (DTC) of the dual stator induction motor have been described and discussed.

scholarly journals Balancing fittings in a water heating system

2019 ◽  
Vol 140 ◽  
pp. 04006
Author(s):  
Olesya Averyanova ◽  
Aleksandra Amelina ◽  
Pavel Amelin ◽  
Aleksandra Makeeva ◽  
Sergej Manovitskij ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Global Economy ◽  
Energy Savings ◽  
Heating System ◽  
Hydraulic Calculation ◽  
Main Element ◽  
Average Value ◽  
Before And After ◽  
Energy Consuming ◽  
Technical Solutions

Energy conservation and improving energy efficiency are priority areas for the development of the global economy. The need to increase the energy efficiency of the engineering equipment of buildings is due to both the requirements to reduce the energy consumption of buildings in general, and the increase in the proportion of energy-consuming climate systems used in modern construction. In large modern office, hotel and residential complexes to achieve the greatest energy efficiency it is necessary to use various technical solutions. The main element of an energy-efficient heating system is regulation. Balancing devices allow to not only balance and tune the system at any time of operational period but also serve as stop valves during reparation and diagnostics. Determination of energy savings bases on the average value heat consumption before and after modernization, depending on the type of installed valves or their combination. The focus of the work is hydraulic calculation of the heating system the authors conduct research on the effect of differently balancing fittings on the hydraulics of the heating system.

Monitoring and Control System of Variable Frequency Aeration Based on PID Control

2013 ◽  
Vol 288 ◽  
pp. 167-171
Author(s):  
Juan Huan ◽  
Xing Qiao Liu ◽  
Hong Yuan Wang ◽  
Hong Yuan Wang
Keyword(s):  
Control System ◽  
Real Time ◽  
Energy Savings ◽  
Frequency Converter ◽  
Environmental Parameters ◽  
Variable Frequency ◽  
Monitoring And Control ◽  
Monitoring And Control System ◽  
Efficient Control ◽  
And Control

Efficient control of DO may increase energy savings, improve productivity, and enhance sustainability for aquaculture. A new monitoring and control system of variable frequency aeration based on PID has been designed. It can real-time monitor environmental parameters such as PH, DO, temperature, and the height of water. In addition, it can control DO in time. According to the actual changes of DO, the frequency converter automatically controls the aerator’s work. The experiment indicates that the relative error of sensor’s measuring DO is controlled in ±1.3%.The system works stably and achieved the function that it can collect environment data automatically, and manage data in real time.

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