Issues on Synchronizing Power Converters Connected to a Weak Grid

• Type: Article in International Conference Proceedings Book
• Date: 2005

Authors

Carlos Ramos (Author) FEUP; António Pina Martins (Author) FEUP; Adriano Carvalho (Author) FEUP

Conference proceedings International

Title: Proceedings of the Brazilian Conference on Power Electronics, COBEP'2005

Pages: 1-6

Brazilian Conference on Power Electronics, COBEP'2005

Recife, Brasil, 14 a 17 de Junho de 2005

Scientific classification

CORDIS: Technological sciences > Engineering > Electrical engineering ; Technological sciences > Technology > Energy technology > Renewable energies

Other information

Abstract (EN): In renewable and distributed generation systems the grid voltage quality can be poor. So, the connection of power converters to the grid requires accurate control of synchronism between the two sources. The paper discusses issues on synchronization of power converters connected to the mains and related control methods. In this paper a new zero crossing synchronizer is proposed having zero error in steady state, moderate speed response to grid frequency changes and amplitude voltage variations, and immunity to phase unbalance, harmonics and noise. The speed response, and harmonics and noise immunity are a trade-off. Simulation results and experiments based on synthesized voltage grids with strong disturbances in the grid voltage show the robustness of the proposed method.

Language: Portuguese

Type (Professor's evaluation): Scientific