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This paper presents a simplified new approach to evaluate the steady state performance characteristics of the single-phase self-excited induction generator. The proposed approach is based on the analysis of the admittance matrix of the machine equivalent circuit and avoids the common complicated mathematical processes associated with most of the known methods of analysis. It needs a simple computer...
This paper proposes a novel dc-dc buck converter that is composed by an active switched capacitor cell and a conventional buck converter. The proposed converter is named as hybrid buck converter and it presents static gain from 0 to 0.5, maintaining the typical linear characteristics of the buck converter and it reduces the voltage stress on the power components. A theoretical steady state analysis...
In this paper, a new dual output DC-DC converter is proposed. This topology is achieved from another dual output dc-dc converter with a little change. Conventional dual output converters provide two same level voltages in the outputs; but this topology provide two different voltage levels. In this topology, one of the output voltage gain has a considerable increment. This topology, uses two switches...
This paper analyses the steady state behaviour of an isolated self-excited induction generator (SEIG) connected to a balanced resistive load. Adaptive Particle Swarm Optimization (APSO) technique has been used for solving the unknown variables i.e. per unit generated frequency and per unit magnetizing reactance. One of the two non-linear equations has been considered. The result is compared with Newton-...
This paper proposes a novel dc-dc buck converter that presents a static gain from 0.5 to 1, maintains the typical linear characteristics of the buck converter and reduces the voltage stress on the power components. The proposed converter is composed by a switched capacitor cell that was introduced in the conventional buck converter, which results in a hybrid buck converter. A theoretical steady state...
A new generalized model for stability analysis based on a small signal modeling is proposed, for matrix converter fed induction motor drive system. This approach considers the analysis when the drive system operates at unity as well as non-unity input power factor at the source side. With the help of this model, different factors which affect the matrix converter stability are analyzed including stator...
Steady state analysis of single-phase self excited induction generator is almost always carried out using the concepts of symmetrical components and the rotating field theories. The machine is modeled through its positive and negative sequence circuits with appropriate parameters pertaining to forward and backward fields. The final expression obtained through these analyses is a complex nonlinear...
The quasi-Z-source inverter is a very attractive topology because of its unique capability of voltage boost and buck functions in a single stage. But its voltage boost property could be a limiting feature in some applications where very high input voltage gain is required. The input voltage gain could be extended by the implementation of the cascaded quasi-impedance network. This paper discusses two...
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