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Machine vision is the application of computer vision and related technologies to industrial automation. Automated visual inspection is one of these applications, which can be used to solve many problems in industry. Industrial applications require customized solutions, subject to several particular constraints. The final step of integration of a vision system to an industrial process is not an easy...
The present paper addresses the control of doubly fed induction generators under unbalanced voltage sags considering the converter limits. A control strategy is proposed by choosing certain current reference values in the positive and negative sequences so that the torque and the DC voltage are kept stable during such unbalanced sags considering the converter limits.
The present paper deals with the integration of electrical, control and mechanical models in a single platform to evaluate the response of wind turbines to different classes of voltages sags. Models of all the wind turbine parts are described and integrated in two different platforms. Mechanical and aerdynamics are modeled using GH Bladedcopy while electrical and control parts are modeled using Matlab...
Wind turbine electrical generation systems (WTGSs) with doubly-fed induction generators and variable speed capabilities have become popular because of its wide operation range and quality power output compared to the old fixed-speed squirrel-cage generators. The growing WTGS implantation have also increased the grid incidenses due to the wind parks and thus the study of the design of the control to...
This paper reports a framework that makes it possible to carry out safe regression test selection for verification of Web services in an end-to-end manner. The Safe RTS technique has been integrated into a systematic method that monitors distributed code modifications and automates the RTS and RT processes. In doing so, a number of issues due to concurrent changes are recognized and solved.
This paper introduces a new single-phase multilevel inverter with HF isolation and bi-directional power flow capability. The advantage is to provide compact HF isolation, without an additional dc-stage and with lower harmonic distortion in the load. Typical applications of this converter are: photovoltaic systems, fuel cell systems and small wind power systems. The topology is based on a high-frequency...
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