The South Pole Acoustic Test Setup (SPATS) is located in the upper part of the optical neutrino observatory IceCube, currently under construction. SPATS consists of four strings at depths between 80m and 500m below the surface of the ice with seven stages per string. Each stage is equipped with an acoustic sensor and a transmitter. Three strings (string A-C) were deployed in the austral summer ...

The rotor configuration of the brushless doubly fed induction generator (BDFIG) plays an important role in its performance. In order to make the magnetomotive force (MMF) space vector in one set rotor windings to couple both magnetic fields with different pole-pair and have low resistance and inductance, this paper presents a novel wound rotor type for BDFIG with low space harmonic contents. In...

This paper presents the steps of the approach to identify the linear parameters of a salient-pole synchronous machine at standstill and by frequency response tests data (SSFR). It is currently established and demonstrated that stability parameters for synchronous machines can be obtained by performing frequency response tests with the machine at standstill. The objective of this study is to use...

The aim of this study was to assess whether pole vaulters interacted differently with the pole during normal and perturbed approach phase conditions. Six national and international level athletes performed nine jumps, which were recorded and analysed. Pole vaulters were found to produce different coordination patterns when interacting with the pole during normal and perturbed approach phase con...

has the desired specifications. The main role of state feedback control is to stabilize a given system so that all closed-loop eigenvalues are placed in the left half of the complex plane. The following theorem gives a condition under which is possible to place system poles in the desired locations. Theorem 8.1 Assuming that the pair is controllable, there exists a feedback matrix such that the...

Variable phase-pole machines have the potential to extend operational range higher speeds through magnetic pole changes. The state-of-the-art vectorspace decomposition cannot model transient behavior of change for any possible configuration as it creates a discontinuity. proposed harmonicplane theory solves this issue by generalizing vector-space fullest using its discrete Fourier transformatio...