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Publication Title | POWER CONDITIONING FOR GRID CONNECTED MICROTURBINE GENERATION USING MATRIX CONVERTER TECHNIQUE

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International Journal of Advanced Technology in Engineering and Science www.ijates.com Volume No.02, Issue No. 11, November 2014 ISSN (online): 2348 – 7550

POWER CONDITIONING FOR GRID CONNECTED MICROTURBINE GENERATION USING MATRIX CONVERTER TECHNIQUE

Lankapalli Venugopal1, M.Venkateswar Reddy2

1PG Student, Department of EEE, Vikas Group of Institutions, Nunna, Vijayawada, AP, (India)

2Associate Professor, Dept. of EEE, Vikas Group of Institutions, Nunna, Vijayawada, AP, (India)

ABSTRACT

Micro turbines are widely popular as generating units in ‘Distributed Generation’ systems and as energy producers in Combined Heat Power systems. Micro turbines are small and simple cycle gas turbines. Micro turbines are available as single shaft and split shaft units. In Micro grids a micro turbine is interfaced with a synchronous machine for power generation. Power generated by micro turbines is at some undesirable frequency. So power electronic interface is required to deliver power at required frequency. Convention Micro turbines use rectifier-inverter interface for AC-AC conversion. This interface utilizes a DC link capacitor as a temporary energy storage device. This link is of large in size and has less life. Conventional interface induces more harmonics due to frequent switching of power electronic elements. So in order to eliminate these, a Matrix Converter interface is being used in the project. The Matrix Converter is an array of controlled semi conductor switches that connects directly the three phase source to three phase load. It does not require any dc-link circuit and does not need any large energy storage elements.

Index Terms- Distributed Generation, Micro Turbine, Permanent Magnet Synchronous Generator, Power Conditioning Unit, Filter, Islanding Mode, Grid Connected Mode.

I. INTRODUCTION

The integration DG systems into the main electricity network is currently changing the paradigm we used to live with, where the electric power was generated in large power plants, sent to the consumption areas through transmission plants, sent to the consumption areas through transmission lines, and delivered to the consumers through a passive distribution infrastructure. The integration of DG into distribution networks in recent years has transformed them from being passive to active networks [1]. The progress of DG, as an important energy option in the present scenario is the result of combination of utility restructuring, technology\evolutions and recent environmental policies, Distributed or embedded generator is generally defined accepted as a plant which is connected directly to utilities distribution network or can operate independently. They are generally considered to be less than 100MW in capacity and are not centrally planned or dispatched. Distributed generation can be based on renewable technologies such as wind turbine, photovoltaic or recent promising non renewable technologies such as micro turbine and fuel cell. Distributed generation using micro turbine is a typical and practical solution because of its environment-friendliness and high energy efficiency [2].Various applications such as peak saving, co-generation, remote power and premium power will make its penetration

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