The out-of-step operation conditions of a synchronous machine may occur as a result of a power system three-phase fault. The mostly used methods of identification of loss of synchronism are not secure enough. In the paper a new method using highresolution spectrum estimation method is presented. In the case of asynchronous operation of a synchronous machine the current waveform in the stator wi...

The unique merits of internal permanent magnet synchronous machine (IPMSM) make it a good candidate for automotive industrial applications. This paper presents the design of an internal permanent magnet synchronous machine having fractional slot configuration with single layer concentrated winding arrangement. The electromagnetic analysis has been performed using finite element analysis via ANS...

This paper presents a new method for implementing Artificial Neural Network (ANN) observers in estimating and identifying synchronous generator dynamic parameters based on one statistic feature extraction from the operating data using obtained measurements from time zone information. Required data for training the neural network observers are obtained through off-line simulations of a synchrono...

The optimal feedforward torque control problem is tackled and solved analytically for synchronous machines while stator resistance and cross-coupling inductance are explicitly considered. Analytical solutions for the direct and quadrature optimal reference currents are found for all major operation strategies such as Maximum Torque per Current (MTPC) (or often called as Maximum Torque per Amper...

Optimization for synchronous systems is an important problem in logic synthesis. However, the full utilization of don't care information for sequential synthesis is far from being solved. Synchronous boolean relations can represent sequential don't care information upto in synchronous systems. This allows greater exibility in expressing don't care information than ordinary boolean relations rel...

Various electric machines can be the candidate for electric vehicles applications, including induction machines, permanent magnet synchronous machines, switched reluctance machines, etc. Another class of machine, which has been relatively ignored, is synchronous reluctance machines. In order to enhance and increase torque density of pure synchronous reluctance machines, the low cost permanent m...

In this article the influence of higher frequency effects in addition to a special damper design on the electrical behavior of a synchronous generator main exciter machine is investigated. On the one hand these machines are often highly stressed by harmonics from the bridge rectifier thus facing additional eddy current losses. On the other hand the switching may cause the excitation of dangerou...