Abstract
The scope of the research includes energy performance of electrical engineering complexes equipped with asynchronous motors. The paper discusses ways and methods for increasing the efficiency of electrical engineering complexes. It offers dependencies required for quantitative estimation of the efficiency degree of an electrical engineering complex as a function of the efficiency factors, power output and loads of an asynchronous motor. It considers different variants of energy efficient asynchronous motors with IE1 and EI2 energy efficiency class and those with individual compensation of reactive power. Their influence on the efficiency degree of the electrical engineering complex has been investigated. Using the electric drive of an oil pumping unit as an example, it is shown that the efficiency degree of the electrical engineering complex equipped with an asynchronous motor with individual compensation of reactive power with power factor equal to one and IE1 energy efficiency is equivalent to that of the electrical engineering complex equipped with a conventional asynchronous motor of IE2 energy efficiency class. The paper provides results of efficiency factor calculation for various variants of electric drives. The obtained dependencies and estimation outcomes may be useful for manufacturers and operators of asynchronous motors.
Keywords
Electrical engineering complex, asynchronous motor, efficiency degree, power factor, energy efficiency, equation, calculation, analysis.
1. Mugalimov R.G. Asinkhronnye dvigateli s individualnoy kompensatsiey reaktivnoy moschnosti i elektroprivody na ikh osnove [Asynchronous Motors with Independent Reactive Power Compensation and Corresponding Electric Drives. Magnitogorsk, Publishing center of Nosov Magnitogorsk State Technical University, 2011. 250 p.
2. Mugalimov R.G, Mugalimova A.R. Asynchronous Motors with Individual Compensation of Reactive Power, their Engineering and Economic Benefits and Prospects for Application in Industrial Electric Drives. Izvestiya RAN. Energetika [Bulletin of the Russian Academy of Science. Power engineering], 2013, no.5, pp.30-43. (In Russian)
3. Khramshin T.R., Kornilov G.P., Murzikov A.A., Karandaev А.S., Khramshin V.R. Mathematical model of the static reactive power compensator. Proceedings of 2014 International Conference on Actual Problems of Electron Devices Engineering (APEDE). Saratov: Bukva, 2014. Vol. 2. P. 418-425. doi: 10.1109/APEDE.2014.6958287
4. Radionov А.А., Evdokimov S.A., Karandaev А.S., Khramshin V.R. Information and Measurement System for Control of Technical State of Asynchronous Electric Motors with Group Supply from Frequency Converter. Proceedings of 12th International Conference on Actual Problems of Electronic Instrument Engineering (АPEIE-2014). Novosibirsk. 2014, Vol.1. P. 280-285. doi: 10.1109/APEIE.2014.7040897.
5. Khramshin T.R., Kornilov G.P., Murzikov A.A., Karandaev А.S., Khramshin V.R. Vector control system of the static reactive power compensator. Proceedings of 2014 International Conference on Actual Problems of Electron Devices Engineering (APEDE). Saratov: Bukva, 2014. Vol.2. P. 426-433. doi: 10.1109/APEDE.2014.6958288
6. Khramshin V.R., Golovin V.V., Khramshin R.Ya. Energy and Resource Saving Using Electrical Engineering Systems of Wide Strip Hot Rolling Mill. Trudy VIII Mezhdunarodnoy (XIX Vserossiyskoy) konferentsii po avtomatizirovannomu elektroprivodu AEP-2014 [Proceedings of VIII International (XIX All-Russian) conference on automatic electric drive AEP-2014]. Saransk, Publishing center of Mordovia University, 2014, vol.2, pp.329 – 334. (In Russian)
7. Krylov Yu.A., Karandaev A.S., Khramshin V.R., Khramshin R.R. Chastotno-reguliruemyy elektroprivod v teploenergeti-cheskom khozyaystve goroda [Variable Frequency Electric Drive in Heat and Power Facilities of the City]. Magnitogorsk, Publishing center of Nosov Magnitogorsk State Technical University, 2014. 201 p.
8. Karandaev A.S., Khramshin V.R., Khramshina E.A. Automatic Control Principles of Thermal Station Output Parameters on the Basis of Controlled Electric Drives. Applied Mechanics and Materials. 2015. Vol.698. P.808-814. doi: 10.4028/www.scientific.net/AMM.698.808
9. Golovin V.V., Karandaev A.S., Hramshin V.R. Energy-saving Thyristor Electric Drives with Automatic Coordinate Variation, which is Controlled by Circuit Condenser. Izvestiya vuzov. Elektromehanika [Proceedings of Higher Educational Institutions. Electromechanics], 2006, no.4, pp. 35-39. (In Russian)
10. Golovin V.V., Karandaev A.S., Hramshin V.R. Performance Evaluation of Applying Thyristor Electric Drive with Automatic Coordinate Variation, which is Controlled by Circuit Condenser. Izvestiya vuzov. Elektromehanika [Proceedings of Higher Educational Institutions. Electromechanics], 2006, no.4, pp. 40-45. (In Russian)
11. Karandaev A.S., Khramshin V.R., Lukin A.A., Shurygina G.V., Golovin V.V. Experimental Research of Thyristor Electric Drives with Two-zone Speed Control with Improved Energetic Characteristics. Vestnik YuURGU. Seriya energetika [Bulletin of South-Ural state university. Series ''Power engineering''], 2010, no.13, pp.67-72.
12. Khramshin V.R. Razrabotka elektrotehnicheskih sistem nepreryvnoi gruppy stana goryachei prokatki pri rasshirenii sortamenta polos. Doct. Diss. [Development of Electrotechnical Systems for Continuous Train of Hot Rolling Mill in the Process of Product Range Expansion Doct. Diss.]. Magnitogorsk, 2013, 393 p.
13. Mugalimov R.G., Zakirova R.A., Mugalimova A.R. Energy Efficient Induction Motors, their Technical and Economic Advantages and Optimization of their Production Cost. Elektrotekhnicheskie sistmy i kompleksy [Electrotechnical systems and complexes]. 2016, no.2(31), pp.30-34.
14. Khramshin V.R., Karandaeva O.I., Mamleeva Yu.I., Petukhova O.I., Khramshina E.A. Controlled electric drive as a meaning of power saving in hydraulic systems of pumping unit. Elektrotekhnicheskie sistmy i kompleksy [Electrotechnical systems and complexes]. 2012, no. 20, pp. 354-360.