A direct-current generator for constant potential at variable speed

Doubly Fed Induction Generator Systems For Variable Speed Wind Turbine

This paper presents results of a study concerning the dynamic behaviour of a wind energy system powered by a doubly fed induction generator with the rotor connected to the electric network through an AC-AC converter. A tendency to put up more and more wind turbines can be observed all over the world. Also, there is awareness in taking into account the requirements of a clean environment, due to...

Analysis of Brushless direct current Generator

In this work, optimisation of a brushless direct current (BLDC) generator design was undertaken by carrying out an electromagnetic and computational fluid dynamic study. The studies were carried out for different loadingoverloading conditions and angular speeds, keeping in consideration the required electrical and thermal parameters, firstly for the initial design and then for optimised designs...

The new pumped storage power plant with variable speed generator

It is very important, to optimize of clean electrical energy by employing of variable Speed pumped storage power plant (VSPSP). Variable speed machines are used extensively in wind power plants and pumped storage power plants. Therefore, the advantages of this technology are including: stability, reliability, fast dynamic responses, frequency control and high efficiency of power system. By usin...

Designing a Coreless High-Speed Axial-Flux PM Generator for Microturbines

Fast, high-current pulse generator with variable amplitude and width

a one-dimensional random walk, for which the statistical properties are well known. The essential idea behind this approach can best be seen in Eq. (2) where the individual t; + r terms in the sum on the left represent steps in a unidirectional random walk, the walk being terminated when the value Tis reached. A detailed treatment (facilitated by the definition of the I; given above) shows that...