A New Definition of Voltage Unbalance Using Supply Phase Shift
Tóm tắt
Studies on voltage unbalance have revealed its detrimental effects on the operation of three-phase induction motors (TPIM) due to the production of negative-sequence current and torque. Voltage unbalance has been defined in different ways over the years, and each of these definitions is limited in scope in one form or the order, e.g. the neglect or inadequate consideration of the phase angle of the supply in these definitions. The complex voltage unbalance factor captures the phase angle using the ratio of the sequence components, but there is a challenge on the interpretation of the random angle θv with respect to the supply. In this study, a novel definition of phase unbalance is proposed which considers the normal 120° displacement of the three phases of the supply. A comparative analysis of all the definitions is presented using four operational supply case studies for a TPIM, and the results may ultimately impact control strategies.
Tài liệu tham khảo
Adekitan, I. A., & AbdulKareem, A. (2019). The significance of the mode of voltage imbalance on the operation and energy losses of 3-phase induction motor. Engineering and Applied Science Research, 46(3), 200–209.
Adekitan, A., Ogunjuyigbe, A. S., & Ayodele, T. R. (2019a). The impact of supply phase shift on the three phase induction motor operation. Engineering Review, 39(3), 270–282.
Adekitan, A. I., Samuel, I., & Amuta, E. (2019b). Dataset on the performance of a three phase induction motor under balanced and unbalanced supply voltage conditions. Data in Brief, 24, 103947. https://doi.org/10.1016/j.dib.2019.103947.
Anwari, M., & Hiendro, A. (2010). New unbalance factor for estimating performance of a three-phase induction motor with under- and overvoltage unbalance. IEEE Transactions on Energy Conversion, 25(3), 619–625.
de Castro e Silva, M. D., Ferreira Filho, A. L., Neves, A. B. F., & Mendonça, M. V. B. (2016). Effects of sequence voltage components on torque and efficiency of a three-phase induction motor. Electric Power Systems Research, 140(Supplement C), 942–949. https://doi.org/10.1016/j.epsr.2016.03.051.
dos Santos Pereira, G. M., Fernandes, T. S. P., & Aoki, A. R. (2018). Allocation of capacitors and voltage regulators in three-phase distribution networks. Journal of Control, Automation and Electrical Systems, 29(2), 238–249. https://doi.org/10.1007/s40313-018-0367-x.
Faiz, J., Ebrahimpour, H., & Pillay, P. (2004). Influence of unbalanced voltage on the steady-state performance of a three-phase squirrel-cage induction motor. IEEE Transactions on Energy Conversion, 19(4), 657–662.
Garcia, D. C., Anésio Filho, L., Oliveira, M. A., Fernandes, O. A., & do Nascimento, F. A. (2009). Voltage unbalance numerical evaluation and minimization. Electric Power Systems Research, 79(10), 1441–1445.
Gnacinski, P. (2008). Effect of unbalanced voltage on windings temperature, operational life and load carrying capacity of induction machine. Energy Conversion and Management, 49(4), 761–770. https://doi.org/10.1016/j.enconman.2007.07.033.
Gnaciński, P., Pepliński, M., & Hallmann, D. (2018) Thermal transients of induction machine under changeable voltage unbalance. In 2018 XIII international conference on electrical machines (ICEM), 2018 (pp. 1338–1343). IEEE.
Gnacinski, P., & Tarasiuk, T. (2016). Energy-efficient operation of induction motors and power quality standards. Electric Power Systems Research, 135(Supplement C), 10–17. https://doi.org/10.1016/j.epsr.2016.03.022.
Hiendro, A. (2010). A quantities method of induction motor under unbalanced voltage conditions. Telkomnika, 8(2), 73–80.
Palácios, R. H. C., da Silva, I. N., Goedtel, A., Godoy, W. F., & Oleskovicz, M. (2014). A robust neural method to estimate torque in three-phase induction motor. Journal of Control, Automation and Electrical Systems, 25(4), 493–502. https://doi.org/10.1007/s40313-014-0118-6.
Pillay, P., & Manyage, M. (2001). Definitions of voltage unbalance. IEEE Power Engineering Review, 21(5), 50–51.
Qiu, H., Zhang, Y., Yang, C., & Yi, R. (2019). The influence of stator-rotor slot combination on performance of high-voltage asynchronous motor. Journal of Control, Automation and Electrical Systems. https://doi.org/10.1007/s40313-019-00502-w.
Quispe, E., & Lopez, I. (2015). Effects of unbalanced voltages on the energy performance of three-phase induction motors. In 2015 IEEE Workshop on Power Electronics and Power Quality Applications (PEPQA), 2015 (pp. 1–6). IEEE. https://doi.org/10.1109/PEPQA.2015.7168237.
Quispe, E., Vigeo, P., & Cogollos, J. (2005). Statistical equations to evaluate the effects of voltage unbalance on the efficiency and power factor of a three-phase induction motors. WSEAS Transactions On Circuits And Systems, Brasil, 4(4), 234–239.
Reineri, C. A., Gómez, J. C., Balaguer, E. B., & Morcos, M. M. (2006). Experimental study of induction motor performance with unbalanced supply. Electric Power Components and Systems, 34(7), 817–829. https://doi.org/10.1080/15325000500488636.
Singh Shashi, B., & Singh Asheesh, K. (2013). Precise assessment of performance of induction motor under supply imbalance through impedance unbalance factor. Journal of Electrical Engineering, 64, 31.
Yaw-Juen, W. (2001). Analysis of effects of three-phase voltage unbalance on induction motors with emphasis on the angle of the complex voltage unbalance factor. IEEE Transactions on Energy Conversion, 16(3), 270–275. https://doi.org/10.1109/60.937207.