A Lyapunov-Based Generalized Dc-Side Controller Design for PV-Connected Systems

Rahul Mallik; Branko Majmunovic; Soham Dutta; Gab-Su Seo; Dragan Maksimovic; Brian Johnson

doi:10.1109/ECCE50734.2022.9947496

A Lyapunov-Based Generalized Dc-Side Controller Design for PV-Connected Systems

Rahul Mallik, Branko Majmunovic, Soham Dutta, Gab-Su Seo, Dragan Maksimovic, Brian Johnson

Power Systems Engineering

Research output: Contribution to conference › Paper › peer-review

1 Scopus Citations

Abstract

The objective of this paper is to realize a universal dc-side controller for photovoltaic (PV) systems where the control is agnostic to the downstream converter configuration. To achieve this, the downstream power converter and its controls are manipulated into an effective power control loop that is then cast into a generalized multi-loop design framework. On the dc side, a nonlinear small-signal model of the PV input is realized exclusively in terms of PV datasheet parameters (i.e., open-circuit voltage, short-circuit current, and maximum power point). Finally, a linear controller is used to modulate the dc-side PV system with the generic downstream power controller. A Lyapunov candidate is proposed to analyze the stability of the interconnected system and provide a streamlined approach for the controller design. The proposed design is validated on a 1 kVA experimental setup that interfaces a PV module to the grid.

Original language	American English
Number of pages	8
DOIs	https://doi.org/10.1109/ECCE50734.2022.9947496 https://doi.org/10.1109/ECCE50734.2022.9947496
State	Published - 2022
Event	2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022 - Detroit, United States Duration: 9 Oct 2022 → 13 Oct 2022

Conference

Conference	2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022
Country/Territory	United States
City	Detroit
Period	9/10/22 → 13/10/22

Bibliographical note

See NREL/CP-5D00-83961 for preprint.

NREL Publication Number

NREL/CP-5D00-85112

Keywords

Generalized PV controller
Lypanuov-based stability for PV
MPPT
PV dynamic resistance
small-signal PV modeling

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Mallik, R., Majmunovic, B., Dutta, S., Seo, G.-S., Maksimovic, D., & Johnson, B. (2022). A Lyapunov-Based Generalized Dc-Side Controller Design for PV-Connected Systems. Paper presented at 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022, Detroit, United States. https://doi.org/10.1109/ECCE50734.2022.9947496, https://doi.org/10.1109/ECCE50734.2022.9947496

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author = "Rahul Mallik and Branko Majmunovic and Soham Dutta and Gab-Su Seo and Dragan Maksimovic and Brian Johnson",

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Mallik, R, Majmunovic, B, Dutta, S, Seo, G-S, Maksimovic, D & Johnson, B 2022, 'A Lyapunov-Based Generalized Dc-Side Controller Design for PV-Connected Systems', Paper presented at 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022, Detroit, United States, 9/10/22 - 13/10/22. https://doi.org/10.1109/ECCE50734.2022.9947496, https://doi.org/10.1109/ECCE50734.2022.9947496

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AU - Mallik, Rahul

AU - Majmunovic, Branko

AU - Dutta, Soham

AU - Seo, Gab-Su

AU - Maksimovic, Dragan

AU - Johnson, Brian

N1 - See NREL/CP-5D00-83961 for preprint.

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Y1 - 2022

N2 - The objective of this paper is to realize a universal dc-side controller for photovoltaic (PV) systems where the control is agnostic to the downstream converter configuration. To achieve this, the downstream power converter and its controls are manipulated into an effective power control loop that is then cast into a generalized multi-loop design framework. On the dc side, a nonlinear small-signal model of the PV input is realized exclusively in terms of PV datasheet parameters (i.e., open-circuit voltage, short-circuit current, and maximum power point). Finally, a linear controller is used to modulate the dc-side PV system with the generic downstream power controller. A Lyapunov candidate is proposed to analyze the stability of the interconnected system and provide a streamlined approach for the controller design. The proposed design is validated on a 1 kVA experimental setup that interfaces a PV module to the grid.

AB - The objective of this paper is to realize a universal dc-side controller for photovoltaic (PV) systems where the control is agnostic to the downstream converter configuration. To achieve this, the downstream power converter and its controls are manipulated into an effective power control loop that is then cast into a generalized multi-loop design framework. On the dc side, a nonlinear small-signal model of the PV input is realized exclusively in terms of PV datasheet parameters (i.e., open-circuit voltage, short-circuit current, and maximum power point). Finally, a linear controller is used to modulate the dc-side PV system with the generic downstream power controller. A Lyapunov candidate is proposed to analyze the stability of the interconnected system and provide a streamlined approach for the controller design. The proposed design is validated on a 1 kVA experimental setup that interfaces a PV module to the grid.

KW - Generalized PV controller

KW - Lypanuov-based stability for PV

KW - MPPT

KW - PV dynamic resistance

KW - small-signal PV modeling

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M3 - Paper

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T2 - 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022

Y2 - 9 October 2022 through 13 October 2022

ER -

A Lyapunov-Based Generalized Dc-Side Controller Design for PV-Connected Systems

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

UN SDGs

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