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Interconnection of two micro hydro units forming a mini-grid system using soft connection

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3 Author(s)
Adhikary, B. ; Dept. of Electr. & Electron. Eng., Kathmandu Univ., Kathmandu, Nepal ; Ghimire, B. ; Karki, P.

This paper presents the soft connection between two micro-hydro units forming a mini-grid system. It describes the operation and the design of the induction generator controller (IGC), used for the power balancing at varying consumers load as required for standalone micro-hydro generators and the synchronizer unit, used for the mini-grid interconnection. Three phase induction motors are used as single phase generators by using C-2C capacitor configuration for supplying single phase resistive load. This paper proposes a simple soft connection scheme based on classical zero crossing detector. Operation and experimental tests of IGC based mini-grid system with soft connection is also presented. Through the results it has been shown that the proposed model is feasible for rural electrification schemes.

Published in:

TENCON 2009 - 2009 IEEE Region 10 Conference

Date of Conference:

23-26 Jan. 2009

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