Abstract:
This paper described a synchronized output regulation (SOR) strategy for control of inverters working in grid-connected and stand-alone modes. As a concept of networked d...Show MoreMetadata
Abstract:
This paper described a synchronized output regulation (SOR) strategy for control of inverters working in grid-connected and stand-alone modes. As a concept of networked dynamic systems, SOR means that the nodes have their outputs synchronized but also demonstrate the desired wave shape. Both the inverter and the utility are regarded as two nodes of the simplest network consisting of themselves. In stand-alone mode, the two nodes work independently, while in grid-connected mode the inverter still works in a relatively independent way with only the reference voltage changing for a general synchronization that the current between the inverter node and the utility node satisfies the required power injection. An intermediate synchronization mode is highlighted since it is an standard SOR problem existing in the transition from stand-alone mode to grid-connected mode. The relatively independent design leads to a seamless transfer between operation modes. The analysis of the closed-loop system is done in the state space with the help of output regulation theory that offers the design robustness. An experiment that has been implemented and verified on a single-phase utility interactive inverter.
Published in: 2015 54th IEEE Conference on Decision and Control (CDC)
Date of Conference: 15-18 December 2015
Date Added to IEEE Xplore: 11 February 2016
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