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Control Topology for Emulating the Behavior of Synchronous Machines in Voltage Source Converters
Shafreen Parvez S,  Abdul Khadar,  Zoya Parvez S
This paper presents a control strategy based on the VSC emulating the behavior of synchronous machines. VSCs are the preferred electronic interfacing devices used for interfacing the distributed generators units or renewable generation units with the ac system in this paper. The regulation of the dc-link voltage helps in integration of these VSCs in the existing system in the presence of conventional synchronous machines. Two loops are designed each, to emulate the mechanical behavior of an SM which offers synchronization power to eliminate the need for a phase- locked- loop after initial converter synchronization, and damping power dynamics to damp power oscillations. This presents frequency dynamics similar to SMs, thus it introduces some inertia to the grid. Two different topologies for the dc-link voltage control are presented- direct dc-link voltage control and virtual torque control. These topologies are simulated using and the results of both the topologies are shown.
Keywords- Voltage Source Converters (VSC), Synchronous Machines (SM), Synchronous Generator (SG), dc-link voltage, Virtual torque, Virtual inertia.
Unique Identification Number - IJEDR1702229Page Number(s) - 1466-1472Pubished in - Volume 5 | Issue 2 | May 2017DOI (Digital Object Identifier) -    http://doi.one/10.8/ijedr.17015Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
Shafreen Parvez S,  Abdul Khadar,  Zoya Parvez S,   "Control Topology for Emulating the Behavior of Synchronous Machines in Voltage Source Converters"
, International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.5, Issue 2, pp.1466-1472, May 2017, Available at :http://www.ijedr.org/papers/IJEDR1702229.pdf