Decoupled Active and Reactive Power Control without PLL Requirement for Differential Buck Converter

Ahmad Khan; Mohsen Hosseinzadehtaher; Mitchell Easley; Mohammad B. Shadmand; Haitham Abu-Rub

doi:10.1109/ECCE44975.2020.9235663

Decoupled Active and Reactive Power Control without PLL Requirement for Differential Buck Converter

Ahmad Khan, Mohsen Hosseinzadehtaher, Mitchell Easley, Mohammad B. Shadmand, Haitham Abu-Rub

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

This paper presents a decoupled active and reactive power control for the differential buck converter. This control does not require phase locked loop (PLL) for synchronization. Also, it achieves active and reactive power control in a simple single control loop structure. The differential buck converter has the capability to compensate the double line frequency power ripple without relying on additional hardware. Particularly, the Common Mode (CM) operation is used for active double line frequency power ripple absorption. Whereas, the Differential Mode (DM) operation is used as an active and reactive power exchanging port between the converter and the grid at the point of common coupling (PCC). The motivation behind this paper proposal are: (i) to avoid PLL induced instabilities, especially, when connecting the differential buck converter with weak grid, and (ii) direct active and reactive power control for the differential buck in a single loop control. The theoretical analyses are verified with a 5 kW converter with only 50 µF decoupling capacitor connected to a weak grid.

Original language	English
Title of host publication	ECCE 2020 - IEEE Energy Conversion Congress and Exposition
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	4994-4999
Number of pages	6
ISBN (Electronic)	9781728158266
DOIs	https://doi.org/10.1109/ECCE44975.2020.9235663
Publication status	Published - 11 Oct 2020
Externally published	Yes
Event	12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020 - Virtual, Detroit, United States Duration: 11 Oct 2020 → 15 Oct 2020

Publication series

Name	ECCE 2020 - IEEE Energy Conversion Congress and Exposition

Conference

Conference	12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020
Country/Territory	United States
City	Virtual, Detroit
Period	11/10/20 → 15/10/20

Keywords

active and reactive power control
active power decoupling
Differential buck
grid-connected converter
grid-following converter
grid-tied converter
PLL-less
weak grid

Access to Document

10.1109/ECCE44975.2020.9235663

Cite this

Khan, A., Hosseinzadehtaher, M., Easley, M., Shadmand, M. B., & Abu-Rub, H. (2020). Decoupled Active and Reactive Power Control without PLL Requirement for Differential Buck Converter. In ECCE 2020 - IEEE Energy Conversion Congress and Exposition (pp. 4994-4999). Article 9235663 (ECCE 2020 - IEEE Energy Conversion Congress and Exposition). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE44975.2020.9235663

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title = "Decoupled Active and Reactive Power Control without PLL Requirement for Differential Buck Converter",

abstract = "This paper presents a decoupled active and reactive power control for the differential buck converter. This control does not require phase locked loop (PLL) for synchronization. Also, it achieves active and reactive power control in a simple single control loop structure. The differential buck converter has the capability to compensate the double line frequency power ripple without relying on additional hardware. Particularly, the Common Mode (CM) operation is used for active double line frequency power ripple absorption. Whereas, the Differential Mode (DM) operation is used as an active and reactive power exchanging port between the converter and the grid at the point of common coupling (PCC). The motivation behind this paper proposal are: (i) to avoid PLL induced instabilities, especially, when connecting the differential buck converter with weak grid, and (ii) direct active and reactive power control for the differential buck in a single loop control. The theoretical analyses are verified with a 5 kW converter with only 50 µF decoupling capacitor connected to a weak grid.",

keywords = "active and reactive power control, active power decoupling, Differential buck, grid-connected converter, grid-following converter, grid-tied converter, PLL-less, weak grid",

author = "Ahmad Khan and Mohsen Hosseinzadehtaher and Mitchell Easley and Shadmand, {Mohammad B.} and Haitham Abu-Rub",

note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020 ; Conference date: 11-10-2020 Through 15-10-2020",

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Khan, A, Hosseinzadehtaher, M, Easley, M, Shadmand, MB & Abu-Rub, H 2020, Decoupled Active and Reactive Power Control without PLL Requirement for Differential Buck Converter. in ECCE 2020 - IEEE Energy Conversion Congress and Exposition., 9235663, ECCE 2020 - IEEE Energy Conversion Congress and Exposition, Institute of Electrical and Electronics Engineers Inc., pp. 4994-4999, 12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020, Virtual, Detroit, United States, 11/10/20. https://doi.org/10.1109/ECCE44975.2020.9235663

Decoupled Active and Reactive Power Control without PLL Requirement for Differential Buck Converter. / Khan, Ahmad; Hosseinzadehtaher, Mohsen; Easley, Mitchell et al.
ECCE 2020 - IEEE Energy Conversion Congress and Exposition. Institute of Electrical and Electronics Engineers Inc., 2020. p. 4994-4999 9235663 (ECCE 2020 - IEEE Energy Conversion Congress and Exposition).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Hosseinzadehtaher, Mohsen

AU - Easley, Mitchell

AU - Shadmand, Mohammad B.

AU - Abu-Rub, Haitham

PY - 2020/10/11

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N2 - This paper presents a decoupled active and reactive power control for the differential buck converter. This control does not require phase locked loop (PLL) for synchronization. Also, it achieves active and reactive power control in a simple single control loop structure. The differential buck converter has the capability to compensate the double line frequency power ripple without relying on additional hardware. Particularly, the Common Mode (CM) operation is used for active double line frequency power ripple absorption. Whereas, the Differential Mode (DM) operation is used as an active and reactive power exchanging port between the converter and the grid at the point of common coupling (PCC). The motivation behind this paper proposal are: (i) to avoid PLL induced instabilities, especially, when connecting the differential buck converter with weak grid, and (ii) direct active and reactive power control for the differential buck in a single loop control. The theoretical analyses are verified with a 5 kW converter with only 50 µF decoupling capacitor connected to a weak grid.

AB - This paper presents a decoupled active and reactive power control for the differential buck converter. This control does not require phase locked loop (PLL) for synchronization. Also, it achieves active and reactive power control in a simple single control loop structure. The differential buck converter has the capability to compensate the double line frequency power ripple without relying on additional hardware. Particularly, the Common Mode (CM) operation is used for active double line frequency power ripple absorption. Whereas, the Differential Mode (DM) operation is used as an active and reactive power exchanging port between the converter and the grid at the point of common coupling (PCC). The motivation behind this paper proposal are: (i) to avoid PLL induced instabilities, especially, when connecting the differential buck converter with weak grid, and (ii) direct active and reactive power control for the differential buck in a single loop control. The theoretical analyses are verified with a 5 kW converter with only 50 µF decoupling capacitor connected to a weak grid.

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KW - grid-connected converter

KW - grid-following converter

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ER -

Khan A, Hosseinzadehtaher M, Easley M, Shadmand MB, Abu-Rub H. Decoupled Active and Reactive Power Control without PLL Requirement for Differential Buck Converter. In ECCE 2020 - IEEE Energy Conversion Congress and Exposition. Institute of Electrical and Electronics Engineers Inc. 2020. p. 4994-4999. 9235663. (ECCE 2020 - IEEE Energy Conversion Congress and Exposition). doi: 10.1109/ECCE44975.2020.9235663

Decoupled Active and Reactive Power Control without PLL Requirement for Differential Buck Converter

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Keywords

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