Improving Energy Efficiency of the Variable Frequency Drive of the Forced-Draught Fan with the Two-Speed Asynchronous Motor

Abstract:

Based on the example of forced-draught fans of the GOFHWB-100 series hot water boilers (gas and oil fired hot water boilers) power supply reserves of the electric drive with two-speed asynchronous motor have been determined. The structural chart of the developed control system of the electric drive with winding changeover depending on the boiler performance is provided. The paper considers power consumption of electric drive in the variable frequency speed control mode at the motor operation on the high and low speed windings. It presents methods for calculation of energy performance based on computing the equivalent efficiency of the fluid-handling application. The analysis of the efficiency change has proved that the variable frequency control enables electric power savings at the low speed winding by 5 to 6%. The results obtained are recommended to be widely applied at the change-over of the electric drives with two-speed asynchronous motors to the variable frequency control of performance.

• Periodical: Applied Mechanics and Materials (Volume 792)
• Pages: 128-133
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.792.128
• Online since: September 2015
• Authors: Ekaterina A. Khramshina, Alexander S. Karandaev, Rifkhat R. Khramshin
• Keywords: Efficiency, Forced-Draught Fan, Hot Water Boiler, Performance, Power Capacity, Power Saving, Two-Speed Electric Motor, Variable Frequency Drive, Winding Changeover

References

[1] Yu.A. Krylov, A.S. Karandaev, V.N. Medvedev, Power Saving and Industrial Automation in Municipal Heat and Power Facilities Variable-Frequency Electric Drive, St. Petersburg: Lan' Publ. (2013) 176 p.

[2] V.N. Medvedev, A.S. Karandaev, O.I. Karandaeva, Yu.I. Mamleeva, E.A. Khramshina, Technological Demand and Assessment of Efficiency for the Introduction of Frequency and Adjustable Electric Drives on Objects of the Thermal Power Plant, Vestnik of Ivanovo State Power Engineering University (2012).

[3] G. G. Goppe, Power-Saving Electric Drive of the Forced-Draught Fans and Smoke Exhausters of the Thermal Power Plant on the Basis of Two-Speed AM, Proceedings of the IV International (XV All-Russian) Conference on automated electric, part 2, Magnitogorsk, MSTU (2004).

[4] T.R. Khramshin, A.S. Karandaev, R.R. Khramshin, A.R. Gubajdullin, V.R. Khramshin, G.P. Kornilov, Control Unit of the Two-Speed Electric Motor of the Boiler Unit Forced-Draught Fan, Patent RF, no. 137437, (2014).

DOI: 10.4028/www.scientific.net/amm.792.128

[5] V.R. Khramshin, K.E. Odintsov, A.R. Gubajdullin, O.I. Karandaeva, Yu.N. Kondrashova, Fault Rate Analysis of Variable-Frequency Electric Drives in District Heating Station under Power Supply Violations, Bulletin of the South Ural State University. Ser. Power Engineering (2014).

[6] A.S. Karandaev, R.R. Khramshin, T.R. Khramshin, V.R. Khramshin, A.R. Gubajdullin, Ways of Increasing Variable-Frequency Electric Drives Stability under Power Supply Violations, Russian Internet Journal of Industrial Engineering (2013).

DOI: 10.3103/s1068371215040045

[7] Yu.A. Krylov, I.A. Selivanov, A.S. Karandaev, A.R. Gubajdullin, V.V. Rovnejko, R.R. Galljamov, Problems of Variable-Frequency Electric Drives Introduction for Thermal Power Station Critical Mechanisms, Bulletin of the Higher Institutions. Electromechanics (2011).

[8] A.B. Vinogradov, A.N. Sibircev, V.L. Chistoserdov, I. Ju. Kolodin, D.A. Monov, New Functions and Intellectual Features of the VED Series Electric Drives, Power Electronics (2008) no. 3, pp.61-64.

[9] D.O. Gerasimov, G.G. Goppe, Power-Saving Control of the Boiler Draft Units at the Thermal Power Plants Using Electric Drive Resource, Automated Systems and Complexes (2009) no. 1, pp.136-145.

[10] A.А. Radionov, A.S. Karandaev, R.R. Khramshin, A.R. Gubajdullin, O.I. Karandaeva, E.A. Khramshina, Evaluation of Energy Saving Resource in Electric Drive of Blower Fan with Two-speed Induction Motor Bulletin of the South Ural State University. Ser. Power Engineering (2014).