# Identification for stability analysis of three-phase bridge rectifier feeding the parallel controlled buck converters by artificial intelligence techniques

## Main Article Content

## Abstract

Artificial intelligent techniques are very popular in engineering works. This paper presents three techniques as follows: genetic algorithm, particle swarm optimization and adaptive tabu search to identify the accurate parameters in the mathematical model of AC-DC power system feeding the parallel controlled buck converters. The controlled power converters behave as the constant power loads in which they can significantly degrade the system stability. Hence, the stability analysis is necessary to predict the unstable point of the system. However, it is not only the behaviors of the controlled power converters but the parameters of the system also affect the system stability. Some parameters cannot be measured by the instrument directly. Therefore, the artificial intelligent techniques will be used to search the parameter values that correctly represent the system response. After these parameters are achieved, the dynamic model with accurate parameters will be used for the stability analysis by the eigenvalue theorem via the mathematical model. The stability analysis verification will be confirmed by the simulation and experimental results.

## Article Details

## References

Grigore V., Hatonen J., Kyyra J., Suntio T. Dynamics of a buck converter with a constant power load. IEEE Power Electronics Specialists Conference. 1998. p. 72–78.

Jusoh A.B. The instability effect of constant power loads. Nat. Power Energy Conf. 2004.

p. 175–179.

Emadi A., Khaligh A., Rivetta C. H., Williamson

G. A. Constant power loads and negative impedance instability in automotive systems: Definition, modeling, stability, and control of power electronic converters and motor drives. IEEE Transactions on Vehicular Technology. 2006. 55(4): 1112–1125.

Rahimi A.M., Emadi A. An analytical investigation of DC/DC power electronic converters with constant power loads in vehicular power systems. IEEE Transactions on Vehicular Technology. 2009. 58(6): 2689–2702.

Areerak K-N., Wu T., Bozhko S.V., Asher G.M., Thomas D.W.P. Aircraft power system stability study including effect of voltage control and actuators dynamic. IEEE Transactions on Aerospace and Electronic Systems. 2011. 47(7): 2574–2589.

Sopapirm T., Areerak K-N., Areerak K-L. Stability analysis of AC distribution system with six-pulse diode rectifier and multi- converter power electronic loads. International Review of Electrical Engineering. 2011. 6(7): 2919–2928.

Areerak K-N., Bozhko S.V., Asher G.M., Delillo L., Thomas D.W.P. Stability study for a hybrid

AC-DC more-electric aircraft power system. IEEE Transactions on Aerospace and Electronic Systems. 2012. 48(1): 329–347.

Areerak K-N., Sopapirm T., Bozhko S., Hill C.I., Suyapan A., Areerak K-L. Adaptive stabilization of uncontrolled rectifier based AC–DC power systems feeding constant power loads. IEEE Transactions on Power Electronics. 2018. 33(10): 8927–8935.

Pakdeeto J., Areerak K-N., Bozhko S., Areerak K-L. Stabilization of DC microgrid systems using the loop-cancellation technique. IEEE Journal of Emerging and Selected Topics in Power Electronics. 2021. 9(3): 2652–2663.

Suyapan A., Areerak K-N., Bozhko S., Yeoh S.S., Areerak K-L.Adaptive stabilization of a permanent magnet synchronous generator-based DC electrical power system in more electric aircraft. IEEE Transactions on Transportation Electrification. 2021. 7(4): 2965–2975.

Phosung R., Areerak K-N., Sopapirm T. Areerak K-L. Design and optimization of instability mitigation for AC–DC feeder systems with constant power loads using artificial intelligence techniques. IEEE Transactions on Power Electronics. 2022. 37(5): 5385–5397.

Riccobono A., Santi E. Comprehensive review of stability criteria for DC Power distribution systems. IEEE Transactions on Industry Applications. 2014. 50(5): 3525–3535.

Griffo A., Wang J. Large signal stability analysis of more electric aircraft power system with constant power loads. IEEE Transactions on Aerospace and Electronic Systems. 2012. 48(1): 477-489.

Narongrit T., Areerak K-L., Areerak K-N. Design

of an active power filter using genetic algorithm technique. Proceedings of the 9th WSEAS International Conference on Artificial Intelligent, Knowledge Engineering and Data Bases. 2010. p. 46–50.

Chonsatidjamroen S., Areerak K-N., and Areerak K-L. The optimal cascade PI controller design of buck converters. International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology. 2012. p. 1-4.

Puansdownreong D., Areerak K-N., Srikaew A., Sujitjorn S., Totarong P. System Identification via Adaptive Tabu Search. IEEE International Conference on Industrial Technology. 2002. p. 915-920.

Pakdeeto J., Chanpittayagit R., Areerak K-N., Areerak K-L. The optimal controller design of buck-boost converter by using adaptive tabu search algorithm based on state-space averaging model. Journal of Electrical Engineering and Technology. 2017. 12(3): 1146–1155.

Udomsuk S., Areerak K-N., Areerak T., Areerak K-L. Power loss identification of three-phase induction motor using adaptive tabu search. International Electrical Engineering Congress. 2017. p. 337–340.

Shen L., Li J., Wu Y., Tang Z., Wang Y. Optimization of artificial bee colony algorithm based load balancing in smart grid cloud. IEEE Innovative Smart Grid Technologies - Asia. 2019. p. 1131–1134.

Lirui G., Limin H., Liguo Z., Liguo L., Jie H. Reactive power optimization for distribution systems based on dual population ant colony optimization. Chinese Control Conference. 2008. p. 89–93.

Cespedes M., Xing L., Sun J. Constant-power loads system stabilization by passive damping. International Journal of Engineering Research and Applications. 2011. 26(7): 1832–1836.

Pakdeeto J., Thanommuang A., Chaicharoenudomrung K., Areerak K-N., Areerak K-L. The effect of parameter variations of system stability for AC-DC power system feeding controlled buck converter. International Conference on Power, Energy and Innovations. 2021. p. 61–64.

Sopapirm T., Areerak K-N., Areerak K-L. The identification of AC-DC power system parameter using an adaptive tabu search technique. International Review of Electrical Engineering. 2012. 7(4): 4655–4662.

Sopapirm T., Areerak K-N., Areerak K-L. The averaging model of a six-pulse diode rectifier feeding paralleled buck converters. International Journal of Mathematics and Computers in Simulation. 2012. 6(1): 58–65.