Capacitor Current Control Based Virtual Inertia Control of Autonomous DC Microgrid

Swaminathan, GV; Periasamy, S; Lu, DDC

Capacitor Current Control Based Virtual Inertia Control of Autonomous DC Microgrid

Swaminathan, GV Periasamy, S Lu, DDC

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Publisher:: Institute of Electrical and Electronics Engineers (IEEE)
Publication Type:: Journal Article
Citation:: IEEE Transactions on Industrial Electronics, 2023, 70, (7), pp. 6908-6918
Issue Date:: 2023-07-01

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Field	Value	Language
dc.contributor.author	Swaminathan, GV
dc.contributor.author	Periasamy, S
dc.contributor.author	Lu, DDC
dc.date.accessioned	2023-03-20T22:40:09Z
dc.date.available	2023-03-20T22:40:09Z
dc.date.issued	2023-07-01
dc.identifier.citation	IEEE Transactions on Industrial Electronics, 2023, 70, (7), pp. 6908-6918
dc.identifier.issn	0278-0046
dc.identifier.issn	1557-9948
dc.identifier.uri	http://hdl.handle.net/10453/167816
dc.description.abstract	Virtual inertia (VI) control of dc microgrids (dc MG) is a potential solution to the voltage stability issue caused by the intermittency of loads and renewable sources. Existing VI strategies for dc MG rely on a first-order differential equation relating voltage (speed) with current (torque) to control the grid-forming converters that are crucial in an autonomous dc MG. However, the output impedance of these converters can distort the inertial response. Existing research works overcome this by using a feed-forward controller (FFC) necessitating an accurate system model for proper compensation. Hence, in this article, a novel VI scheme based on capacitor current control, which does not rely on any differential equation, is proposed. The proposed VI scheme employs a static gain to restrict the capacitor current for inertia emulation without any additional FFC. Furthermore, the proposed VI scheme is extended to parallel-connected converters to study their steady-state and transient coordination. Finally, the proposed strategy is validated in simulation using MATLAB/Simulink and is also experimentally verified in a laboratory prototype using the TMS320F280049C controller.
dc.language	en
dc.publisher	Institute of Electrical and Electronics Engineers (IEEE)
dc.relation.ispartof	IEEE Transactions on Industrial Electronics
dc.relation.isbasedon	10.1109/TIE.2022.3201313
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	08 Information and Computing Sciences, 09 Engineering
dc.subject.classification	Electrical & Electronic Engineering
dc.title	Capacitor Current Control Based Virtual Inertia Control of Autonomous DC Microgrid
dc.type	Journal Article
utslib.citation.volume	70
utslib.for	08 Information and Computing Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2023-03-20T22:40:07Z
pubs.issue	7
pubs.publication-status	Accepted
pubs.volume	70
utslib.citation.issue	7

Abstract:

Virtual inertia (VI) control of dc microgrids (dc MG) is a potential solution to the voltage stability issue caused by the intermittency of loads and renewable sources. Existing VI strategies for dc MG rely on a first-order differential equation relating voltage (speed) with current (torque) to control the grid-forming converters that are crucial in an autonomous dc MG. However, the output impedance of these converters can distort the inertial response. Existing research works overcome this by using a feed-forward controller (FFC) necessitating an accurate system model for proper compensation. Hence, in this article, a novel VI scheme based on capacitor current control, which does not rely on any differential equation, is proposed. The proposed VI scheme employs a static gain to restrict the capacitor current for inertia emulation without any additional FFC. Furthermore, the proposed VI scheme is extended to parallel-connected converters to study their steady-state and transient coordination. Finally, the proposed strategy is validated in simulation using MATLAB/Simulink and is also experimentally verified in a laboratory prototype using the TMS320F280049C controller.

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http://hdl.handle.net/10453/167816