this paper presents a new arc starter circuit that is usable in manual metal arc welding (mma) power supplies. the proposed circuit uses an auxiliary circuit and a series coupling transformer for adding high frequency spikes to output dc voltage during arc striking. the proposed circuit is usable in inverter based arc welding supplies and it could result in a decrease of weigh, volume and expen...

In this paper, the concept of secondary control is applied for voltage unbalance compensation in an islanded microgrid. The aim of the proposed control approach is to enhance the voltage quality at the point of common coupling (PCC). Unbalance compensation is achieved by proper control of distributed generators (DGs). The DGs control structure mainly consists of active and reactive power contro...

The operation of Fuel Cell Distributed Generation (FCDG) systems in distribution systems is introduced by modeling, controller design, and simulation study of a Solid Oxide Fuel Cell (SOFC) distributed generation (DG) system. The physical model of the fuel cell stack and dynamic models of power conditioning units are described. Then, suitable control architecture based on fuzzy logic contro...

Power conservation and throughput management is a major issue in Mobile Ad Hoc Networks. In the design of wireless ad hoc networks, various techniques are applied to efficiently allocate the scarce resources available for the communication links and the power control and throughput management is not related to any particular layer in the layered design communication protocol design. But most of...

In this paper, we propose B robust filtering approach to distributed power allocation. A robust filter is used to predict the channel gain and interference under incomplete knowledge of the shadowing coefficient. Simulation results show the superior performance of the robust solution in comparison l a a traditional Kalman-filter-based solution in terms of blocking probability. keywords: Robust ...

This paper presents an approach that uses supervisor architecture structure with the intention to reach flexibility of the combustion process control during the boiler functioning on the example of the high qualified Power AG. For this case, adaptive distributed control system with the supervisor on top is invented, on the middle layer with load distribution on burners and maintenance of optima...