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Distributed resources are finding increased penetration in developing countries like India. The increased acceptance of such resources is mainly due to their modularity, increased reliability, good power quality and environment friendly operation. These are currently being interfaced to the existing systems using voltage source inverters (VSC's). The control of such distributed resources is significantly...
Twelve pulse nonlinear loads are generally employed in high power applications for large AC and DC drives. These 12-pulse rectifiers are utilized for high power loads because of comparatively less supply current Total Harmonic Distortion (THD) compared to 6-pulse rectifier at front end. However, both 6-pulse as well as 12-pulse converters at front end behaving as nonlinear loads do not meet IEEE 519...
Adjustable speed drives (ASD) employing induction motors are widely used in the industrials and process control in the form of varied applications such as fans, compressors, pumps etc. They are energy efficient and can result in substantial energy saving when properly installed. However, they inject high harmonic content into current drawn from the AC system. This paper deals with the application...
Innovations in renewable energy technology are becoming important as worldwide needs for affordable, reliable & clean energy grow worldwide. Research is needed for new generation technologies and effective integration of these into electric grid. Renewable sources are abundant particularly in India and we can harness these resources for producing electricity. Globally speaking, wind technology...
A solar panel is a device that converts light into electricity. Solar electric equipment like inverters or maximum power point trackers must be used to harness solar power. Such equipment needs to be rigorously tested for power quality, protection, safety and other issues. Testing in a natural environment using solar panels presents difficulties in terms of repeatability as well as achieving full...
This paper deals with the design and development of fuzzy logic based controller for Distribution Static compensator (DSTATCOM) applied to an isolated system. The controller is developed and simulated for a small diesel generator system feeding a variety of linear as well as non-linear loads. Fuzzy rules are developed and successively reduced at every step such that controller design is simplified...
This paper discusses the application of Distribution Static Compensator (DSTATCOM) to a small distribution system supplied from 42.5kVA diesel generator. The isolated system is not supported from the grid and is prone to a variety of system disturbances and faults. The shunt compensator is modelled, simulated and its performance is studied under load perturbations. To meet the real power needs, a...
Harmonics are the by-products of modern electronic devices i.e. nonlinear loads which create harmonics by drawing current in abrupt short pulses, rather than in a smooth sinusoidal manner. Any distribution circuit feeding nonlinear loads will contain some degree of harmonic frequencies. Due to the rapidly increasing number of non-linear loads in distribution systems, the harmonic distortion of the...
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