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Optimization of energy efficiency in relation to digital electric drive systems; Energioptimering ved anvendelse af digitale drevudrustninger

Technical Report:

Abstract

Various methods are described for minimizing the energy consumption of electric drive systems. The theoretical background for optimization of the efficiency level at stationary workpoints in shunt-type direct-current motors is briefly described. Measurements and calculations have shown that the degree of efficiency can be increased by 0-25%, dependent on the workpoint. The improvement continues with decreasing moment and number og revolutions. The theoretical basis for minimizing energy consumption at stationary workpoints with regard to induction machines controlled by frequency formers is also explained. Here the degree of efficiency can be improved up to 20%, dependent on the workpoint and improvement also continues in accordance with decreasing moment and number of revolutions. A method was developed for estimating the impedance of induction machines based on catalogued data. The method makes it possible to implement the open loop minimization of the energy consumption of the induction machine and can be generally used where knowledge of the relevant data is necessary. The theory for optimal regulation is described and used to determine the velocity profile for a direct-current motor. Calculations show that the degree efficiency can be improved by 12% by use of the optimal profile instead of the traditional trapeze profile. (AB)
Authors:
Publication Date:
Nov 01, 1992
Product Type:
Technical Report
Report Number:
NEI-DK-1389
Reference Number:
SCA: 320303; PA: DK-93:002097; EDB-94:019026; NTS-94:008574; ERA-19:006885; SN: 94001129687
Resource Relation:
Other Information: DN: EFP-90; PBD: Nov 1992; Related Information: Energiministeriets Forskningsprogram. Energianvendelse i erhvervslivets processer og produkter, Energiministeriets Forskningsprogram. Energianvendelse i erhvervslivets processer og produkter
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ELECTRIC MOTORS; ENERGY EFFICIENCY; ENERGY CONSERVATION; COMPUTERIZED CONTROL SYSTEMS; MATHEMATICAL MODELS; DESIGN; DIRECT CURRENT; IMPEDANCE; INDUCTION GENERATORS; OPTIMIZATION; OPERATION; 320303; EQUIPMENT AND PROCESSES
OSTI ID:
10116482
Research Organizations:
Danmarks Ingenioerakademi, Lyngby (Denmark). Elektroafdelingen
Country of Origin:
Denmark
Language:
Danish
Other Identifying Numbers:
Other: ON: DE94730335; CNN: Contract ENS-1223/90-0008; TRN: DK9302097
Availability:
OSTI; NTIS
Submitting Site:
DK
Size:
65 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Leutenberger, P. Optimization of energy efficiency in relation to digital electric drive systems; Energioptimering ved anvendelse af digitale drevudrustninger. Denmark: N. p., 1992. Web.
Leutenberger, P. Optimization of energy efficiency in relation to digital electric drive systems; Energioptimering ved anvendelse af digitale drevudrustninger. Denmark.
Leutenberger, P. 1992. "Optimization of energy efficiency in relation to digital electric drive systems; Energioptimering ved anvendelse af digitale drevudrustninger." Denmark.
@misc{etde_10116482,
title = {Optimization of energy efficiency in relation to digital electric drive systems; Energioptimering ved anvendelse af digitale drevudrustninger}
author = {Leutenberger, P}
abstractNote = {Various methods are described for minimizing the energy consumption of electric drive systems. The theoretical background for optimization of the efficiency level at stationary workpoints in shunt-type direct-current motors is briefly described. Measurements and calculations have shown that the degree of efficiency can be increased by 0-25%, dependent on the workpoint. The improvement continues with decreasing moment and number og revolutions. The theoretical basis for minimizing energy consumption at stationary workpoints with regard to induction machines controlled by frequency formers is also explained. Here the degree of efficiency can be improved up to 20%, dependent on the workpoint and improvement also continues in accordance with decreasing moment and number of revolutions. A method was developed for estimating the impedance of induction machines based on catalogued data. The method makes it possible to implement the open loop minimization of the energy consumption of the induction machine and can be generally used where knowledge of the relevant data is necessary. The theory for optimal regulation is described and used to determine the velocity profile for a direct-current motor. Calculations show that the degree efficiency can be improved by 12% by use of the optimal profile instead of the traditional trapeze profile. (AB)}
place = {Denmark}
year = {1992}
month = {Nov}
}