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Predictive direct power control for dual-active-bridge multilevel inverter based on conservative power theory

Predictive direct power control for dual-active-bridge multilevel inverter based on conservative power theory
Predictive direct power control for dual-active-bridge multilevel inverter based on conservative power theory
This paper explores the feasibility of multilevel dual-active bridge-inverter (DABMI) applications for grid-connected applications of a modern Model of Predictive Direct Power Control (MPDPC) based on the conservative power theory (CPT). In the case of unbalanced grid voltages, the objective of the study is to promote continued active and reactive energy in MPDPC without reducing efficiency such as transient response and current harmonics. The nature of the instantaneous p-q theory permits only one out of three control targets to be fulfilled. The proposed control approached directly regulates the instantaneous active and reactive power to achieve three particular control objectives namely sinusoidal and symmetrical grid current, cancelling twice of fundamental grid frequency reactive power ripples, and removing twice grid frequency active power ripple. The techniques of complicated Grid part sequence extraction are unnecessary and improved at no extra expense, as is the case with current MPDPC fault-tolerant approaches. The instantaneous power at the next sampling instant is predicted with the newly developed discrete-time model. Each possible switching state will then be evaluated in the cost function defined until the optimal state which lead to the minimum power errors is determined. In MATLAB/Simulink simulation, the proposed CPT-based MPDPC measures reliability and performance at balanced and unbalanced grid voltages then compared with the conventional and existing MPDPC The proposed method manages to achieve all of three control targets which generates sinusoidal grid currents and attenuates active and reactive power ripple of twice the grid frequency exactly at the same time without losing its critical efficiency including transient reaction and current harmonics.
grid-connected application, multilevel inverter, unbalanced grid voltage
1996-1073
1-14
Bohari, Azuwien Aida
308c4614-db91-414c-bdb1-4cb3eba0c67b
Goh, Hui Hwang
ebfacf54-f171-4cca-a64e-e9d9a7d4ae53
Tonni, Agustiono Kurniawan
6b327749-3af3-470e-9ae7-5bfd4ce5246c
Lee, Sze Sing
47f36964-db27-4f5e-a4d3-4b0ba78ce29e
Sim, Sy Yi
2cc0136d-d6ad-4a96-8c71-b392ddc18181
Goh, Kai Chen
913bdc3f-4954-4ea1-9e55-28d55fcb76bf
Lim, Chee Shen
616d0697-a5d5-4079-adaa-6686e5a758fe
Luo, Yi Chen
1167b50b-03c7-42a6-b59e-4b68571e0cba
Bohari, Azuwien Aida
308c4614-db91-414c-bdb1-4cb3eba0c67b
Goh, Hui Hwang
ebfacf54-f171-4cca-a64e-e9d9a7d4ae53
Tonni, Agustiono Kurniawan
6b327749-3af3-470e-9ae7-5bfd4ce5246c
Lee, Sze Sing
47f36964-db27-4f5e-a4d3-4b0ba78ce29e
Sim, Sy Yi
2cc0136d-d6ad-4a96-8c71-b392ddc18181
Goh, Kai Chen
913bdc3f-4954-4ea1-9e55-28d55fcb76bf
Lim, Chee Shen
616d0697-a5d5-4079-adaa-6686e5a758fe
Luo, Yi Chen
1167b50b-03c7-42a6-b59e-4b68571e0cba

Bohari, Azuwien Aida, Goh, Hui Hwang, Tonni, Agustiono Kurniawan, Lee, Sze Sing, Sim, Sy Yi, Goh, Kai Chen, Lim, Chee Shen and Luo, Yi Chen (2020) Predictive direct power control for dual-active-bridge multilevel inverter based on conservative power theory. Energies, 13 (11), 1-14, [2951]. (doi:10.3390/en13112951).

Record type: Article

Abstract

This paper explores the feasibility of multilevel dual-active bridge-inverter (DABMI) applications for grid-connected applications of a modern Model of Predictive Direct Power Control (MPDPC) based on the conservative power theory (CPT). In the case of unbalanced grid voltages, the objective of the study is to promote continued active and reactive energy in MPDPC without reducing efficiency such as transient response and current harmonics. The nature of the instantaneous p-q theory permits only one out of three control targets to be fulfilled. The proposed control approached directly regulates the instantaneous active and reactive power to achieve three particular control objectives namely sinusoidal and symmetrical grid current, cancelling twice of fundamental grid frequency reactive power ripples, and removing twice grid frequency active power ripple. The techniques of complicated Grid part sequence extraction are unnecessary and improved at no extra expense, as is the case with current MPDPC fault-tolerant approaches. The instantaneous power at the next sampling instant is predicted with the newly developed discrete-time model. Each possible switching state will then be evaluated in the cost function defined until the optimal state which lead to the minimum power errors is determined. In MATLAB/Simulink simulation, the proposed CPT-based MPDPC measures reliability and performance at balanced and unbalanced grid voltages then compared with the conventional and existing MPDPC The proposed method manages to achieve all of three control targets which generates sinusoidal grid currents and attenuates active and reactive power ripple of twice the grid frequency exactly at the same time without losing its critical efficiency including transient reaction and current harmonics.

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Accepted/In Press date: 4 June 2020
e-pub ahead of print date: 9 June 2020
Keywords: grid-connected application, multilevel inverter, unbalanced grid voltage

Identifiers

Local EPrints ID: 443150
URI: http://eprints.soton.ac.uk/id/eprint/443150
ISSN: 1996-1073
PURE UUID: 1c79857f-8281-427d-8304-78f9ee59f669
ORCID for Sze Sing Lee: ORCID iD orcid.org/0000-0003-2455-5783

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Date deposited: 12 Aug 2020 16:37
Last modified: 14 Sep 2021 18:13

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Contributors

Author: Azuwien Aida Bohari
Author: Hui Hwang Goh
Author: Agustiono Kurniawan Tonni
Author: Sze Sing Lee ORCID iD
Author: Sy Yi Sim
Author: Kai Chen Goh
Author: Chee Shen Lim
Author: Yi Chen Luo

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