• Chinthamakula Parthasai
• P. Shashavali
• M. Khaimulla

In most of the cases, a single controller, either it be a simple basic PID controller or other controllers like Fuzzy Logic controller, Artificial Neural Network Fuzzy Logic controller is sufficient for controlling a specific parameter. In contrast to this possibility, there can be a situation where the single controller may fail to satisfactorily control the required parameter to required value. In such situations, a hybrid controller approach by using one controller in conjunction with another controller can be helpful. Controlling burden is shared by the two controllers obtaining optimum control. This paper proposes a hybrid controller approach using a PID controller and in conjunction with Fuzzy Logic Controller. A single machine system is implemented with various magnitude of loads and simulated using MATLAB® Simulink software. Results of voltage deviation and frequency deviation with step load and various steps of load is compared with fractional order PID controller.

PID controller, Fuzzy Logic Controller, Power System Stabilizer (PSS), Automatic Voltage Regulator (AVR), Single Machine System, Hybrid Controller, Cascade Control.

"Performance Improvement of Power System Stabilizer for a Single Machine System Using Hybrid Controller Approach", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.521-528, June 2019, Available :http://www.jetir.org/papers/JETIR1906L75.pdf

"Performance Improvement of Power System Stabilizer for a Single Machine System Using Hybrid Controller Approach", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp521-528, June 2019, Available at : http://www.jetir.org/papers/JETIR1906L75.pdf