This paper describes the implementation and studies the performance of a synchronous , parallel discrete event simulation (SPDES) method on a shared memory multiprocessor. The presented method aims at the eecient simulation of architectural designs for which the asynchronous PDES methods seem to be less eeective. A multiprocessor machine is simulated, and the performance achieved is compared to...

In this paper, the new approach for identification of synchronous generator using nonlinear feedback model and with piecewise linear map is investigated. In this method, synchronous generator model consists of a linear-dynamic block in forward path and a nonlinear-static block in feedback path. The identification method simultaneously approximates these blocks without requiring prior assumption...

The knowledge of dynamic states of electrical machine, especially the relative rotor position and velocity, are very important for us to understand the machine performance and to possibly design advanced control systems. This paper addresses the state estimation problem of synchronous machines in power systems, both in deterministic and stochastic cases during small transients. The paper examin...

Up to now, the electromechanical synchronous machine rules the domain of electrical power generation devices and that way the public power grids. Its specific characteristics guarantee the stable highly parallel grid operation, automatic power balancing and damping. Not least the rotating mass is related to some dynamic properties and the condition for the grid short time frequency stability. T...

This paper presents a direct torque control strategy for double star synchronous machine fed by two three-level inverters. The analysis of the torque and the stator flux linkage reference frame shows that the concept of direct torque control can be extended easily to double star synchronous machine. The proposed approach consists to replace the switching tables by one artificial neural networks...

This paper describes the power-system stability improvement by a static synchronous compensator (STATCOM) based damping controller with Differential evolution (DE) algorithm is used to find out the optimal controller parameters. The present study considered both local and remote signals with associated time delays. The performances of the proposed controllers have been compared with different d...

This paper presents a new model for the speci cation of communicating X-machine systems (CXMS). In previous papers, systems of X-machines have been implemented in two ways: using an unique X-machine which simulates the concurrent behaviour of several processes [1], or using several X-machines which communicate through asynchronous channels [2]. This article introduces an X-machine system for wh...

Synchronous languages allow a high level, concurrent, and deterministic description the behavior of reactive systems. Thus, they can be used advantageously for the programming of embedded control systems. The runtime requirements of synchronous code are light, but several critical properties must be fulfilled. In this paper, we address the problem of the software implementation of synchronous p...

Bulk-Synchronous Parallel ML (BSML) is a functional dataparallel language for the implementation of Bulk-Synchronous Parallel (BSP) algorithms. It makes an estimation of the execution time (cost) possible. This paper presents some general examples of BSML programs and a comparison of their predicted costs with the measured execution time on a parallel machine.

SynchronousBoolean relations can represent sequential don’t care information in synchronous systems. These allow greater flexibility in expressing don’t care information than ordinary Boolean relations. Synchronous relations can be used to specify sequential designs both at the finite state machine level as well as at the level of combinational elements and latches. The main objective of this p...