Large converter-fed synchronous motors for high speeds and adjustable speed operation: design features and experience

1999 ◽  
Vol 14 (3) ◽  
pp. 633-636 ◽  
Author(s):  
G.J. Neidhofer ◽  
A.G. Troedson
1987 ◽  
Vol 13 (1) ◽  
pp. 29-40 ◽  
Author(s):  
W. den Ouden† ◽  
D. Hamels

2001 ◽  
Vol 21 (8) ◽  
pp. 55-55
Author(s):  
M. Villablanca ◽  
W. Ziehlmann ◽  
C. Flores ◽  
C. Cuevas ◽  
P. Armijo

2015 ◽  
Author(s):  
Eugene Miller ◽  
Jeff Gladhill ◽  
Brett Fox

This paper provides an introduction to the requirements, design and implementation of bridge simulator systems to support the training of operators and bridge teams for fast ships. Consistent with the practice for conventional ships, there is a trend to use bridge simulator systems to support the training of individual operators and bridge teams of fast ships. This also applies to a lesser degree to support the training of operators of high speed boats. Although they share much in common with bridge simulators for conventional ships, bridge simulator systems for fast ships have to support additional or different emphasis on training requirements. These training requirements arise due to the inherent nature of fast ships (operation at high speeds) and the design features typically implemented in fast ships. In the context of this paper, fast implies the capability to operate for sustained periods at speeds in excess of 30 kts. The following sections provides some background information, discuss the training requirements that are specific to fast ships, the translation of these training requirements into requirements for fast ship bridge simulator and then some examples related to the implementation of these simulator requirements in existing systems.


Author(s):  
J. Rodríguez-Reséndiz ◽  
J. M. Gutiérrez-Villalobos ◽  
D. Duarte-Correa ◽  
J. D. Mendiola-Santibañez ◽  
I. M. Santillán-Méndez

In this article a hardware topology meant to compare the velocity performance of both an induction motor and a permanent magnet (PM) AC three-phase motor is presented. A variable reference is tracked by the sensorless vectorcontrolled adjustable speed drive (ASD) that permits, by means of the same type of  control, performing the speed control loop of the two motors. The algorithms are programmed on a digital signal processor (DSP) in order to ensure efficient use of energy in the transistor bridge and proper tracking of the reference at low and high speeds. Regarding the torque performance, a laboratory test bed based on a torquemeter and two motors is constructed. The hardware implementation includes the power and the digital stages. A serial communication between the PC and the ASD is accomplished to put into operation in the user front-end because a high speed sample frequency is required for the analysis software that runs in the PC. This interface is used not only as comparing the speed response of the motors signals but also as looking the power quality analysis of each motor measurements based on software. Results are presented to demonstrate the effectiveness of the sensorless scheme.


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