EPE Association: EPE 2023 - LS6c: Control of Grid Connected Converters

EPE 2023 - LS6c: Control of Grid Connected Converters
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2023 ECCE Europe - Conference > EPE 2023 - Topic 04: Electrical Machines and Drive Systems > EPE 2023 - LS6c: Control of Grid Connected Converters

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   Active Power Decoupling Control Using the Power Phasor Concept
By Caniggia VIANA, Chatumal PERERA, Pathmanathan MEHANATHAN, Peter LEHN [View]
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Abstract: Active power decoupling has proven to be a significantcontrol design challenge. Typical solutions heavily rely onfeed-forward techniques and commonly fail to achieve zero ripple.This work introduces the concepts of power phasor , which allowfor the use of the Park transformation, bringing the problem toa rotating reference frame where the ripple is translated to a dcquantity, enabling easy conceptual understanding and the use ofstandard control techniques such as a PID compensator.

   Direct Model Predictive Control with Constrained Power Losses for Grid-Tied Converters with LCL Filters
By Mattia ROSSI, Petros KARAMANAKOS, Arto SANKALA [View]
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Abstract: This paper proposes a direct model predictive control (MPC) method that improves the efficiency of grid-tied converters with LCL filters, while minimizing the grid current distortions. To do so, the MPC problem not only accounts for the grid current reference tracking minimization, but it also limits the converter power losses by introducing explicit constraints on them. To this aim, different problem formulations are examined to limit the losses. Specifically, the FCS-MPC problem is designed such that it either limits the losses per semiconductor device or the three-phase converter losses. The presented results verify the effectiveness of the proposed strategy and demonstrate the performance benefits compared to conventional control and modulation methods, such as voltage-oriented control (VOC) with space vector modulation (SVM) or discontinuous pulse width modulation (DPWM).

   Stability Limits and Improved Robustness of Grid-Forming Converters With External Inertia-Emulation Loop
By Paul IMGART, Massimo BONGIORNO, Jan R. SVENSSON, Mebtu BEZA [View]
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Abstract: An external inertia emulation loop (IEL) prevents instability in grid-forming converters during frequency disturbances. This paper investigates IEL stability limits and compares three alternatives to improve IEL performance under power limitation. Simulations confirm the IEL's robustness and the effectiveness of the proposed solution in avoiding undesired active-power injection at the disturbance end.

EPE 2023 - LS6c: Control of Grid Connected Converters
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2023 ECCE Europe - Conference > EPE 2023 - Topic 04: Electrical Machines and Drive Systems > EPE 2023 - LS6c: Control of Grid Connected Converters
	[return to parent folder]

	Active Power Decoupling Control Using the Power Phasor Concept By Caniggia VIANA, Chatumal PERERA, Pathmanathan MEHANATHAN, Peter LEHN	[View] [Download]
Abstract: Active power decoupling has proven to be a significantcontrol design challenge. Typical solutions heavily rely onfeed-forward techniques and commonly fail to achieve zero ripple.This work introduces the concepts of power phasor , which allowfor the use of the Park transformation, bringing the problem toa rotating reference frame where the ripple is translated to a dcquantity, enabling easy conceptual understanding and the use ofstandard control techniques such as a PID compensator.

	Direct Model Predictive Control with Constrained Power Losses for Grid-Tied Converters with LCL Filters By Mattia ROSSI, Petros KARAMANAKOS, Arto SANKALA	[View] [Download]
Abstract: This paper proposes a direct model predictive control (MPC) method that improves the efficiency of grid-tied converters with LCL filters, while minimizing the grid current distortions. To do so, the MPC problem not only accounts for the grid current reference tracking minimization, but it also limits the converter power losses by introducing explicit constraints on them. To this aim, different problem formulations are examined to limit the losses. Specifically, the FCS-MPC problem is designed such that it either limits the losses per semiconductor device or the three-phase converter losses. The presented results verify the effectiveness of the proposed strategy and demonstrate the performance benefits compared to conventional control and modulation methods, such as voltage-oriented control (VOC) with space vector modulation (SVM) or discontinuous pulse width modulation (DPWM).

	Stability Limits and Improved Robustness of Grid-Forming Converters With External Inertia-Emulation Loop By Paul IMGART, Massimo BONGIORNO, Jan R. SVENSSON, Mebtu BEZA	[View] [Download]
Abstract: An external inertia emulation loop (IEL) prevents instability in grid-forming converters during frequency disturbances. This paper investigates IEL stability limits and compares three alternatives to improve IEL performance under power limitation. Simulations confirm the IEL's robustness and the effectiveness of the proposed solution in avoiding undesired active-power injection at the disturbance end.