this paper proposes a novel approach for coherent generators online clustering in a large power system following a wide area disturbance. an interconnected power system may become unstable due to severe contingency when it is operated close to the stability boundaries. hence, the bulk power system controlled islanding is the last resort to prevent catastrophic cascading outages and wide area bl...

Thermally conductive polymers are highly desired as electrical insulation materials in power-electronic and machines toward high power density payload efficiencies.

The aging of electrical insulation material or a system is a main issue for designers of high-voltage (HV) machines. Precise determination of the life cycle of electrical insulation is one way of improving the efficiency of electrical machines involved in the production and transmission of electrical energy. Much effort has been devoted to preparing statistical or physical methods of Electrical...

This paper gives an overview of nowadays used simulation models and measurement methods in order to determine iron losses in electrical machinery. The paper provides machine designers and system engineers with an overview of suitable iron loss models applicable for the machine design process and simulations. Furthermore, possible methods for iron loss measurements in electrical machines are pre...

Induction motors are the most common means of converting electrical power to mechanical power in the industry. Induction machines were typically considered robust machines; however, this perception began to change toward the end of the last decade as low-cost motors became available on the market. Nowadays the most widely used induction motor in the industry is a machine which works at the limi...

The transverse flux machines (TFM), introduced at the beginning of the 80’s, are possible solutions for diverse applications requiring special electrical machines [1]. The researches have focused until now mainly on rotary TFMs. A new type of permanent magnet linear transverse flux reluctance machine is proposed here. Such machines can be successfully applied for example in conveyor application...

Condition monitoring is an important issue in the maintenance of electrical machines. In the last years many methods of fault detection were cited in literature. Most of the newly proposed advanced methods are for on-line and non-invasive monitoring. This means that the faults can be detected already in their incipient phase during the usual work of the monitored machines. The aims of this pape...

[Purpose] Interferential therapy and electrical stimulation are electrophysical modalities commonly used in physical therapy departments to treat patients with musculoskeletal problems. These machines are applied directly to the patient's skin via a medium or electrodes, which can facilitate the transmission of microorganisms from one patient to another. The purpose of this study was to determi...

The electrical machines had a lot of benefits upon the developments made in the last years in the powder material industry. This statement is well proven by the coming out in the last two decades of the transverse flux machines (TFM). The iron core of most of these machines is built of soft magnetic composite (SMC), which allows three-dimensional flux paths. In this paper measurements of a SMC ...

The self-excitation process in pulsed air-core rotating generators is fundamental in assuring record values of power density and compactness. This paper will analyze the conditions for the self-excitation process in pulsed electrical machines used as power supplies for electromagnetic launchers, using the analogy and methods of the positive feedback in control systems. In the classical “ferroma...