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International Journal of Engineering Trends and Technology (IJETT) – volume 5 number 4 - Nov 2013
Application of Sparse Matrix Converter for Microturbine-Permanent Magnet Synchronous Generator output Voltage Quality Enhancement
N.Vinay Kumar1, A.Bhaskar2
1PG Scholar, Department of Electrical and Electronics Engineering, Narayana Engineering College, Nellore. AP, India.
2Associate professor, Department of Electrical and Electronics Engineering, Narayana Engineering College. Nellore, AP, India.
Abstract— The progress of distributed generation set is an important energy option in the present scenario because distribution generation or cogeneration can be used as a backup option to the load for the continuity of the supply or it can be used as peak shaving load. Here Microturbine-Permanent magnet synchronous generator is used as distributed generation set. In which the permanent magnet synchronous generator is having high output frequency. So, there is a necessity to convert High frequency to low frequency (50) Hz, conventional rectifier-inverter or sparse matrix converter can be used as frequency converter. In this paper, simulation results of sparse matrix converter are compared with conventional rectifier-inverter.
Keywords---Microturbine-Permanent magnet synchronous generator, sparse matrix converter, filters, Harmonics.
Distributed generation sets have received significant attention as a mean to improve the performance and reliability of electrical power system. They can provide low-cost energy and increase energy efficiency. Moreover, through combined heat and power (CHP) mode of operation and their application can also reduce transmission and distribution (T&D) losses, relieve T&D assets, reduce constraints, and improve overall power quality and reliability. Nowadays, there is a growing interest in deploying Microturbine in distribution generation application, because of their quick start capability and easy controllability useful for efficient peak shaving . In the past few years the uses of
Distributed generation sets have increased significantly. MTG’s are small, high speed power plants that usually include the turbine, compressor, generator, and power electronics to deliver the power to the load. MTG’s  have a high- speed gas turbine engine driving an integral electrical generator that produces 25-300Kw power while operating at a high speed, generally in the range of 30,000-80,000 rpm. Electric power frequency is produced about 10,000 of Hz and this has to be converted in standard frequency (50) Hz by the application of sparse matrix converter . Microturbine-Generator is having single-shaft and split-shaft. Single shaft is having high speed synchronous machine with the compressor and turbine mounted on the same shaft while the shaft used for power turbine rotating at 3000rpm and a conventional generator connected via a gear box for speed multiplication .
In this paper, the Single–shaft is usually composed of gas turbine electric power generators. The main advantage of using the single-shaft configuration with Permanent magnet synchronous generator (PMSG) or asynchronous generator is that it is simpler in design. Moreover there is no need for a gear reducer as power electronics sparse matrix converter is used to supply standard frequency to the load.
ISSN: 2231-5381 http://www.ijettjournal.org Page 169
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