A Strategy Based Adaptive Voltage Controller and Optimal load Current Observer for Three-Phase Inverter in Stand-Alone Distributed Generation Systems
| Author(s) | : | Srinivas Kunta |
| Institution | : | Department of Electrical & Electronics Engineering, KU College of Engineering & Technology |
| Published In | : | Vol. 4, Issue 11 — November 2017 |
| Page No. | : | 1172-1185 |
| Domain | : | Engineering |
| Type | : | Research Paper |
| ISSN (Online) | : | 2348-4470 |
| ISSN (Print) | : | 2348-6406 |
This paper proposes an adaptive control method of three-phase inverters for stand-alone distributed generationsystems (DGSs) with and without controller. The proposed voltage controller includes two control terms: an adaptivecompensating term and a stabilizing term. The adaptive compensating control term is constructed to avoid directlycalculating the time derivatives of state variables. Meanwhile, the stabilizing control term is designed to asymptoticallystabilize the error dynamics of the system. Also, a fourth-order optimal load current observer is proposed to reduce thenumber of current sensors and enhance the system reliability and cost effectiveness. The stability of the proposed voltagecontroller and the proposed load current observer is fully proven by using Lyapunov theory. The proposed control systemcan establish good voltage regulation such as fast dynamic response, small steady-state error, and low total harmonicdistortion under sudden load change.
Srinivas Kunta, “A Strategy Based Adaptive Voltage Controller and Optimal load Current Observer for Three-Phase Inverter in Stand-Alone Distributed Generation Systems”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 11, pp. 1172-1185, November 2017.
