One of key issues in multi-user interactive applications is to provide a consistent, shared view among participants while maintaining interactive performance. The buffered synchronization mechanism can support a consistent view by holding events in buffer until a fixed amount of time called playout delay expires and executing them at the same time at all participants. However, if events get lost or delayed, consistency may not be kept among participants, which causes an overhead to recover the lost information. On the other hand, the execution of events should be delayed more than it could have happened when the events arrive earlier than the playout delay. In this paper, we propose an efficient event synchronization scheme adapting dynamically to a network state that ensures a consistent view among participants while maintaining interactive performance. Each participant determines the playout delay dynamically based on the estimated network state. If a network state is unloaded, the playout delay decreases. It increases in case of a loaded network state. The simulation results show that the proposed scheme provides more consistent view among the participants than the static scheme when the loaded network state continues and improves the interactive performance when the network state is unloaded.

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A self-excited induction generator (SEIG) is very simple and robust, has a reduced unit size, is easy to implement and simple to control, and requires very little maintenance compared to other types of generators. In variable operating conditions, the SEIG requires a power electronics interface to transform from the variable frequency voltage output of the generator to a battery voltage output or the related applications. In our study, we tied the SEIG to the power electronics system comprising a diode rectifier and DC/DC converter, and then a final DC load for fuel cell applications was connected. An example of such an application is an electrolyzer where an equivalent circuit is modeled for use in this study. To accomplish the proposed system, we utilized PSCAD and MATLAB for its simulation, control, and analysis. A new system configuration considering three different wind speeds and breaker conditions is modeled and analyzed. The results show that the suggested strategies in this study would contribute to designing and analyzing a more practical power electronics interface system for a wind turbine generator with a DC load.