Reduced Converters And Brushless Generators Based Standalone Microgrid For Rural Electrification
Project Description :

The proposed work deals with the design, control and implementation of different standalone microgrid systems for the remotely located areas. the proposed microgrid topologies are diesel-wind, diesel-wind-pv, small hydro-wind and small hydro-wind-pv. keeping in mind the capability of the residents to pay, the maintenance problems in the remote locations and the simple and robust design, different standalone microgrid topologies using dg set, wind, pv and small hydro energy resources are proposed in this work. different standalone topologies have different set of advantages for different areas having different geographical attributes. the ratings of all the equipment used are calculated so as to support the design procedure. brushless generators are used in all topologies to make them robust and maintenance free. the integration of different resources in different microgrid topologies is carried out using minimum power electronics (no. of controlled switches), which reduces the losses and simplifies the control. the control algorithms are also developed for system integration, voltage-frequency regulation, power quality improvement and stable operation under various disturbances like load variations and fluctuation in energy from renewable sources. systems are tested with real life disturbances like large load variations, dynamic loads, wind speed changing, solar insolation changing etc. to reduce the initial cost, all the topologies are designed with one vsc (voltage source converter) and one/two boost converters only. moreover, the vsc used for integration of the sources at ac and dc side is also performing the function of the power quality improvement and voltage- frequency regulation. with the power quality improvement feature, machine utilization is increased as the load harmonic currents and load reactive power are avoided to flow in the generator windings (syrg and seig) and some part of distribution lines which reduces losses and also avoid the de-rating of generators. also the generator currents are always sinusoidal and balanced. the other feature of the system is that the connection of various sources is at the dc side of the vsc which avoids the requirement of synchronizers. the proposed system is operated so as to maximize the use of renewable energy. but the renewable energy resources are uncertain in nature. to maintain the continuity of the power supply, battery energy storage is also incorporated in the system. batteries are required to balance the instantaneous active power balance between load and supply to regulate the frequency and maintain the reliability of the supply. the proposed topologies can also be used in other applications like telecommunication towers which are presently supplied using diesel generator only, small townships, zero energy building, some industrial load etc. these proposed systems reduce the emission in the populated areas. all the topologies are implemented in lab and wide variety of results are obtained to test the system under different situations.

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Project Details :
  • Date : Dec 16,2014
  • Innovator : Krishan Kant
  • Guide Name : Prof. Bhim Singh
  • College : Indian Institute of Technology Delhi
  • Submission Year : 2015
  • Category : Energy Engineering
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