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Parallel Operation Control of N+1 Redundant Inverter System

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In this paper, a novel parallel operation algorithm of N+1 redundant inverter system with no control interconnections for load-sharing is presented. The proposed control system eliminates the sensing noise and interconnection interface of conventional parallel operation system. To reduce a reactive power deviation in wireless control method, this technique automatically compensates for inverter parameter variation and line impedance imbalances with wireless auto-tuning method. In addition, to increase reliability on transient characteristics of parallel operation, a virtual injected impedance is adopted to eliminate a circulation current among inverter modules. Simulation results are provided in this paper to prove the proposed novel algorithm

Published in:

Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE

Date of Conference:

18-22 June 2006