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The paper describes a project to replace the drive of a pump in a waste water treatment facility. The existing drive has a peak output of 45 kW and is required to operate between 600 and 850 r/min which is obtained from a slip-ring wound-rotor induction motor using rotor resistive control. Of several possible electronically controlled drive configurations, the brushless doubly-fed machine has been...
The switched reluctance motor is a doubly-salient, single-excited motor. This means that it has salient poles on both the rotor and the stator, but only the stator carries windings. A series of switched reluctance motor drives has been developed in the Computer and Automation Research Institute. The motor power range is from 1.5 kW to 22 kW. The paper shows the features of the different solutions...
Force feedback is a basic element in realizations for telemanipulation and virtual reality. In telemanipulation, tactile but especially force information permits the remote operator to carry out efficiently operations which would otherwise be difficult to perform; nevertheless it permits a better simulation and interaction of virtual environment in the case of virtual reality. A system for grasping...
Inert gas welding technology with wolfram electrodes requires AC current for welding aluminium. The technology process gives special requirements to the power converter of type AC/AWI welding units suitable for welding aluminium. Namely, this requires the fast changing of the polarity of some hundred ampere DC current. The paper deals with the theoretical and experimental analysis of a circuit arrangement...
The features of object oriented programming (OOP) are explained and contrasted with the traditional procedural programming paradigm. Incorporating any or all of the OOP features of encapsulation, polymorphism and inheritance results in faster, less error prone, code implementation which promotes code reuse with the further benefit of ease of maintainability. The basic functions of a power electronics...
The design approach, system configuration, experience gained during system installation, initial trials, and actual field performance of a solar photovoltaic power system (SPV) is presented. A remote Indian village, Salojipally, isolated from the electrical grid, was selected for this project based on various logistic and technical considerations. A 7 kWp PV array was installed to operate water pumps...
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