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In this paper, virtual synchronous generator (VSG) theory is investigated and utilized to control parallel inverters in a micro-grid, which is capable of sharing the local loads without communication lines. The mathematical model of VSG is built to describe the electromagnetic and mechanical characteristics of a synchronous generator. To make the model suitable for parallel inverters application,...
This paper presents the damping torque analysis of an energy storage system (ESS) control in a multi-machine power system. The objective of the analysis is to examine the effect of the ESS control on the power system small-signal stability. Firstly in the paper, a systematic procedure to establish a linearized model of the multi-machine power system with the ESS installed is presented. Secondly the...
This paper makes an attempt to assess the benefits of replacing a conventional generator excitation system with a nonlinear voltage regulator using the concepts of synchronizing and damping torque components in a single machine infinite bus (SMIB) system. In recent years, there has been considerable interest in designing nonlinear excitation controllers, which are expected to...
Distributed generation (DG) technology has drawn increasing attention for its tremendous benefits to customers, utilities and the environment. Furthermore, microturbine based power generation has become the most promising DG for its excellent record of improving system stability and economy. In this paper we develop a complete mathematic model, which includes the microturbine, a permanent magnet synchronous...
The idea of power system stabilizer (PSS) or supplementary excitation control is to apply a signal through the excitation system to produce additional damping torque of the generator in a power system at all operating and system conditions. In this paper the study of the dynamic behavior and transient stability of the single-machine infinite-bus (SMIB) with used the eigenvalue analysis is presented...
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