Single-phase grid voltage attributes tracking for the control of grid power converters

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dc.contributor.author Subramanian, Chandrasekaran
dc.contributor.author Kanagaraj, Ragavan
dc.date.accessioned 2014-07-28T09:44:47Z
dc.date.available 2014-07-28T09:44:47Z
dc.date.issued 2014-12
dc.identifier.citation Subramanian, Chandrasekaran and Kanagaraj, Ragavan, “Single-phase grid voltage attributes tracking for the control of grid power converters”, IEEE Journal of Emerging and Selected Topics in Power Electronics, DOI: 10.1109/JESTPE.2014.2341045, Jul. 2014. en_US
dc.identifier.issn 2168-6777
dc.identifier.uri http://dx.doi.org/10.1109/JESTPE.2014.2341045
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1363
dc.description.abstract Grid interfacing power converters are indispensable for renewable energy conversion schemes. Fast and precise detection of grid signal parameters is essential for effective operation and control of these converters. For such applications, synchronous reference frame phase-locked loop (SRF PLL) involving two orthogonal signals is widely deployed. For singlephase system, this requires another signal orthogonal to the input. In this paper, single-phase SRF PLL with fixed sampling period sliding discrete Fourier transform (SDFT) filter as orthogonal signal generator is proposed. Additionally, this filter is capable of rejecting dc offset and harmonics present in the grid voltage. With this arrangement, loop filter of PLL need not be equipped with filtering capability. Therefore, PLL could be designed with larger bandwidth which will result in better transient performance. However, SDFT output will be erroneous with asynchronous sampling, under grid frequency drift.With suitable study, relation between those errors and deviation of frequency from nominal value is established. Using this relation, error compensation at any grid frequency can be achieved. To validate the proposed method, various grid abnormalities are emulated with the aid of programmable power source and dSPACE realtime controller board. The effectiveness of the proposed scheme is demonstrated through experimental investigations. en_US
dc.description.statementofresponsibility by Chandrasekaran Subramanian and Ragavan Kanagaraj
dc.format.extent vol. 2, no. 4, pp. 1041-1048
dc.language.iso en en_US
dc.publisher IEEE en_US
dc.subject Discrete Fourier transforms en_US
dc.subject Frequency estimation en_US
dc.subject MATLAB en_US
dc.subject Phase locked loops en_US
dc.subject Renewable energy resources en_US
dc.title Single-phase grid voltage attributes tracking for the control of grid power converters en_US
dc.type Article en_US
dc.relation.journal IEEE Journal of Emerging and Selected Topics in Power Electronics


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