DocumentCode :
2543869
Title :
Generalized converter modulation and loss estimation for grid interface applications
Author :
Gupta, Rajesh ; Ghosh, Arindam ; Joshi, Avinash
Author_Institution :
Dept. of Electr. Eng., M. N Nat. Inst. of Technol., Allahabad
fYear :
2008
fDate :
20-24 July 2008
Firstpage :
1
Lastpage :
6
Abstract :
In this paper, a generalized converter based on the cascaded H-bridge converter topology has been proposed to be used for the grid interface applications. This includes application of grid compensation and distributed generation interface to the grid. Basic H-bridge modules can be used to build a suitable three-phase voltage source converter (VSC) topology for any medium voltage distribution system application. A generalized multicarrier closed loop converter modulation has been used for the VSCs. The generalized converter modulation has a feature of equal loss distribution among each cell and all the device units in one cell are stressed uniformly. A methodology has been suggested to estimate the total losses in the converter circuit. This includes transformer losses, converter losses and passive component losses. The loss estimation is carried out for a single cell only and the total estimation is obtained by multiplication with the number of cascaded units. A case study of the application of shunt compensator for grid application has been considered to verify the proposed methodology modulation and loss estimation. The results are validated through PSCAD/EMTDC simulation studies.
Keywords :
distributed power generation; power convertors; power grids; power system simulation; PSCAD-EMTDC simulation studies; cascaded H-bridge converter topology; converter losses; distributed generation interface; equal loss distribution; generalized multicarrier closed loop converter modulation; grid compensation; grid interface applications; loss estimation; medium voltage distribution system application; passive component losses; shunt compensator; three-phase voltage source converter topology; transformer losses; Circuit topology; Converters; Distributed control; EMTDC; Electronics cooling; Medium voltage; PSCAD; Power conversion; Power electronics; Stress; Cascaded topology; Distributed Generation; Grid interface; Loss estimation; Shunt Compensators;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008 IEEE
Conference_Location :
Pittsburgh, PA
ISSN :
1932-5517
Print_ISBN :
978-1-4244-1905-0
Electronic_ISBN :
1932-5517
Type :
conf
DOI :
10.1109/PES.2008.4596781
Filename :
4596781
Link To Document :
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