Air conditioning loads (ACLs) are potential flexible resources that can provide various grid services to the power system. Recent studies have attempted represent their flexibility using a virtual battery (VB) model for quantification, but modeling process requires information on thermal parameters and heat disturbances (e.g., solar irradiation internal load) difficult measure. In this paper, w...

This paper presents an analysis of the load signature problem based on Park-domain instantaneous power definition. In particular, the Park power vector is analyzed in the wavelet domain. The analysis is performed by using two different bases to obtain information on the selection criteria. Different loads are analyzed and different challenges are discussed. The transient data are obtained via s...

This article proposes an observer-based current controller for virtual synchronous generators (VSG) in the presence of unmeasured and unpredictable loads. First, considered models are described, notably selected VSG model, as well grid-connected inverter. Then, proposed is detailed, which consists a linear quadratic regulator incorporating integrator state observer. Finally, experimental result...

virtual water adds a new dimension to crop trades and provides a new way of thinking about water scarcity. a systematic analysis of virtual water flows requires integration of all critical drivers of virtual water flows under a single consistent framework. the aim of this study was to assess virtual water flows related to trades of grain crops (wheat, corn, rice, and coarse cereals) and their i...

In this paper, the performance of wireless operation of four-leg parallel inverters, at the presence of unbalanced nonlinear loads, is investigated. In order to control the parallel inverters, an inner current and external voltage control loops should be designed. In this paper, a proportional controller for the current internal loop as well as a proportional-resonant one for the voltage extern...

Abstract—The numerical simulation based on the Finite Element Method (FEM) is widely used in academic institutes and in the industry. It is a useful tool to predict many phenomena present in the classical manufacturing forming processes such as fracture. But, the results of such numerical model depend strongly on the parameters of the constitutive behavior model. The influences of thermal and m...

Network performance can be improved by allowing adaptive routing, but doing so introduces new possibilities of deadlock which can overwhelm the exibility advantages. Planar-adaptive routing (PAR) resolves this tension by limiting adaptive routing to a series of two-dimensional planes, reducing hardware requirements for deadlock prevention. We explore the performance of planar-adaptive routers f...

An excavator is a typical hydraulic heavy-duty human-operated machine used in general versatile construction operations, such as digging, ground levelling, carrying loads, dumping loads, and straight traction. However, there are many tasks, such as hazard environment (nuclear decomposition, earthquake, etc) which is not suitable human working on site. The remotely controllable excavators are re...

With the emergence of cloud computing, computing resources (i.e., networks, servers, storage, applications, and services) are provisioned as metered on-demand services over networks, and can be rapidly allocated and released with minimal management effort. In the cloud computing paradigm, the virtual machine is one of the most commonly used resource carriers in which business services are encap...

Input buffered switches with Virtual Output Queueing (VOQ) can be unstable when presented with unbalanced loads. Existing scheduling algorithms, including iSLIP for Input Queued (IQ) switches and Round Robin (RR) for Combined Input and Crossbar Queued (CICQ) switches, exhibit instability for some schedulable loads. We investigate the use of a queue length threshold and bursting mechanism to ach...