**Author details**

implementations. The proposed control method is noninteger in nature and from the control law given in Eq. (24), there is an integral term around the robust term, that is, signum function. So, it excites low frequency oscillations and thus it is very

In this chapter, a fractional order SVC-based power system is discussed. Based on the fractional sliding manifold, a fractional order sliding control system is proposed. The robustness of the proposed control system is tested under the variable load demand and heavy inductive loading. The performance of the proposed control system is compared with a classical PID control system. From the results and discussion section, it is clear that the proposed control system is more robust as compared to the classical PID control under nonlinear loading profile. Moreover, the control chattering phenomenon is significantly reduced. The proposed control

The authors are thankful to the University of Technology Nowshera, Pakistan

for providing the financial support for the publication of this chapter.

feasible for practical implementation over the microprocessor.

system is feasible for practical implementations.

**7. Conclusions**

**Figure 12.**

*Control signal comparison.*

*Control Theory in Engineering*

**Acknowledgements**

**280**

Nasim Ullah<sup>1</sup> \*, Anwar Ali1 , Haider Ali<sup>1</sup> , Asier Ibeas<sup>2</sup> and Jorge Herrera<sup>3</sup>

1 University of Technology, Nowshera, Pakistan

2 Escola d'Enginyeria, Autonomous University of Barcelona, Barcelona, Spain

3 Departamento de Ingeniería, Universidad de Bogotá Jorge Tadeo Lozano, Bogotá, Colombia

\*Address all correspondence to: nasim.ullah@uotnowshera.edu.pk

© 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
