UPQC-S: A Novel Concept of Simultaneous Voltage Sag/Swell and Load Reactive Power Compensations Utilizing Series Inverter of UPQC
K. Saranya Reddy1, A. Bhaktavastala2, V. Raveendra Reddy3
1K. Saranya Reddy, M.tech, Electricals and Electronic Engineering, JNTUA, PBR Visvodaya Institute Of Science and Technology, Kavali, Nellore, India.
2A. Bhaktavastala, Associate Professor, Department of Electricals and Electronic Engineering, JNTUA, PBR Visvodaya Institute Of Science and Technology, Kavali, Nellore, India.
3V. Raveendra Reddy, Associate Professor, Department of Electricals and Electronic Engineering, JNTUA, PBR Visvodaya Institute Of Science and Technology, Kavali, Nellore, India.
Manuscript received on September 20, 2013. | Revised Manuscript received on October 13, 2013. | Manuscript published on October 30, 2013. | PP: 174-180 | Volume-3, Issue-1, October 2013. | Retrieval Number: A2207103113/2013©BEIESP
Open Access | Ethics and Policies | Cite
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This paper introduces a new concept of optimal utilization of a unified power quality conditioner (UPQC). The series inverter of UPQC is controlled to perform simultaneous 1) voltage sag,swell compensation and 2) load reactive power sharing with the shunt inverter. The active power control approach is used to compensate voltage sag/swell and is integrated with theory of power angle control (PAC) of UPQC to coordinate the load reactive power between the two inverters. Since the series inverter simultaneously delivers active and reactive powers, this concept is named as UPQC-S (S for complex power). A detailed mathematical analysis, to extend the PAC approach for UPQC-S, is presented in this paper. MATLAB, SIMULINK-based simulation results are discussed to support the developed concept. Finally, the proposed concept is validated with a digital signal processor-based experimental study.
Keywords: UPQC, UPQC-S, UPFC, PAC.