Super-Twisting Algorithm-Based Virtual Synchronous Generator in Inverter Interfaced Distributed Generation (IIDG)

Sudhir Kumar Singh, Rajveer Singh, Haroon Ashfaq, Sanjeev Kumar Sharma, Gulshan Sharma () and Pitshou N. Bokoro
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Sudhir Kumar Singh: Department of Electrical Engineering, Jamia Millia Islamia, New Delhi 110025, India
Rajveer Singh: Department of Electrical Engineering, Jamia Millia Islamia, New Delhi 110025, India
Haroon Ashfaq: Department of Electrical Engineering, Jamia Millia Islamia, New Delhi 110025, India
Sanjeev Kumar Sharma: Department of Electrical Engineering, JSS Academy of Technical Education, Noida 201301, India
Gulshan Sharma: Department of Electrical Engineering Technology, University of Johannesburg, Johannesburg 2006, South Africa
Pitshou N. Bokoro: Department of Electrical Engineering Technology, University of Johannesburg, Johannesburg 2006, South Africa

Energies, 2022, vol. 15, issue 16, 1-16

Abstract: The significant proliferation of renewable resources, primarily inverter interfaced distributed generation (IIDG) in the utility grid, leads to a dearth of overall inertia. Subsequently, the system illustrates more frequency nadir and a steeper frequency response. This may degrade the dynamic frequency stability of the overall system. Further, virtual inertia has been synthetically developed in IIDG, which is known as a virtual synchronous generator (VSG). In this work, a novel STO-STC-based controller has been developed, which offers flexible inertia following system disturbance. The controller is based on the super-twisting algorithm (STA), which is a further advancement in the conventional sliding mode control (SMC), and has been incorporated in the control loop of the VSG. In this scheme, two steps have been implemented, where the first one is to categorize all states of the system using a super-twisting observer (STO) and further, it is required to converge essential states very quickly, exploiting a super-twisting controller (STC). Thus, the STO-STC controller reveals a finite-time convergence to the numerous frequency disturbances, based on various case studies. The performance of the controller has been examined in the MATLAB environment with time–domain results that corroborate the satisfactory performance of the STO-STC scheme and that illustrate eminence over the state of the art.

Keywords: virtual inertia emulation; virtual synchronous generator (VSG); inverter interfaced distributed generation (IIDG); sliding mode control (SMC); super-twisting algorithm (STALG); super-twisting control (STC) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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