نتایج جستجو برای: synchronous machine
تعداد نتایج: 297555 فیلتر نتایج به سال:
It has been reported that grammatical information is useful for machine translation (MT) tasks. However, the annotation of incurs significant human costs. Furthermore, it not trivial to adapt MT because usually employs tokenization standards might capture relation between two languages and consequently, subword such as byte-pair-encoding used alleviate out-of-vocabulary problems; however, this ...
Quadrature-axis reactance for various reasons comes into account as one of the most important parameters of salient pole synchronous machine. There are several common standard methods for measuring this parameter that also have been explained with some details in the standards, scientific papers and text books. One of these methods is the maximum lagging current test that is done simply at no-l...
This paper focuses on three commonly used sensorless methods based on high-frequency signal injection; namely, the rotating sinusoidal injection in the stationary reference frame, the pulsating sinusoidal injection in the estimated synchronous reference frame, and the pulsating square wave injection in the estimated synchronous reference frame. Although these methods have found applications in ...
The model of bulk-synchronous parallel (BSP) computation is an emerging paradigm of general-purpose parallel computing. Originally, BSP was defined as a distributed memory model. Shared-memory style BSP programming had to be provided by PRAM simulation. However, this approach destroys data locality and therefore may prove inefficient for many practical problems. In this paper we present a new B...
This paper presents the comparison of applying an adaptive fuzzy controller with and without a variable structure controller (VSC) for a synchronous machine. A simplified linear model of the synchronous machine connected to an infinite bus with constant impedance is used. The multivariable system was previously decoupled to make easier the application of the control schemes. To control the syst...
Fuzzy logic or fuzzy set theory is recently getting increasing emphasis in process control applications. This paper presents an application of fuzzy logic to control the speed of a synchronous machine (SM). Based on the analysis of the SM transient response and fuzzy logic, a fuzzy controller is developed. The fuzzy controller generates the variations of the reference current vector of the SM s...
In this paper, a flexible annotation schema called Structured String-Tree Correspondence (SSTC) is introduced. We propose a variant of SSTC called synchronous SSTC. Synchronous SSTC can be used to describe the correspondence between different languages. We will also describe how synchronous SSTC provides the flexibility to treat some of the non-standard cases, which are problematic to other syn...
Sensorless position control of Surface Mounted Permanent Magnet Synchronous Machines (SMPMSM) still is a challenge. High performance position control at low and zero speed is only possible using anisotropic effects being not considered in the fundamental-frequency machine models but in extended highfrequency models. This paper presents a new highfrequency injection method estimating the rotor p...
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