Multi-Stage Switching Control of Multi-LQR’S for STATCOM Operating Over Wide Range of Operating Conditions in Power System
Sai Shankar1, K T Veeramanju2, Yathisha L3

1Sai Shankar, Research Scholar, Department of EEE, SJCE, Mysuru (Karnataka), India.
2K T Veeramanju, Professor, & Head, Department of EEE, SJCE, Mysuru (Karnataka), India.
3Yathisha L, Associate Professor, Department of ECE, ATME College of Engineering, Mysuru (Karnataka), India.
Manuscript received on 23 March 2019 | Revised Manuscript received on 04 April 2019 | Manuscript Published on 18 April 2019 | PP: 371-379 | Volume-7 Issue-6S March 2019 | Retrieval Number: F02740376S19/2019©BEIESP
Open Access | Editorial and Publishing Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (

Abstract: This paper presents the design of Bryson, Bouderal & multistage-based Linear Quadratic Regulator (LQR) optimal controllers to the STATCOM for light, normal & heavy loads to cover wide range of operating conditions as a preliminary analysis. The two best optimized feedback controllers are selected from the preliminary analysis and optimal switching strategy is implemented to further optimize of output energy for the specified operating conditions. The current challenge in the present work is to design multi controllers, each optimized at different operating conditions and to develop a switching algorithm to select appropriate controller into feedback at different operating conditions. Later, in the second stage of switching, switching between two operating conditions are proposed where, the feeback controllers for the specified operating conditions are selected from the Multi-LQR switching (first stage). The combination of these two stages of switching (Multi-LQR switching followed by Multi-operating switching) is referred to as Multi-stage switching approach for the Multi-LQRs switching.
Keywords: Power System Switching Control Operating Algorithm.
Scope of the Article: Routing, Switching and Addressing Techniques