Parallel Operation of Standard UPSs by Reactive Power Control

• Type: Article in International Conference Proceedings Book
• Date: 1995

Authors

Armando Araújo (Author) FEUP; António Pina Martins (Author) FEUP; Adriano Carvalho (Author) FEUP

Conference proceedings International

Title: Sixth European Conference on Power Electronics and Applications - EPE 95

Pages: 2.363-2.367

Sixth European Conference on Power Electronics and Applications - EPE 95

Sevilha, Espanha

Other information

Abstract (EN): The parallel operation of UPS systems can be based on different control methods: active and reactive power control; voltage and frequency droop; instataneous control of the modulation pulses. This paper presents the results of a control system for parallel operation of UPSs implementing reactive power control. The relative phase between the inverters is constant. Open and closed loop simulated characteristics are presented validating this approach. A digital PI controller is designed based on the continuous equivalent. Simulation results along with experimental ones are presented at the controller level as at the power system. The overall control system is implemented in a simple and low cost platform.

Language: Portuguese

Type (Professor's evaluation): Scientific

No. of pages: 5