Liu, Hanyou;
Fan, Ailong;
Li, Yongping;
Bucknall, Richard;
Chen, Li;
(2024)
Hierarchical distributed MPC method for hybrid energy management: A case study of ship with variable operating conditions.
Renewable and Sustainable Energy Reviews
, 189
(Part A)
, Article 113894. 10.1016/j.rser.2023.113894.
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Abstract
The energy management (EM) strategy, power controller, and local controller of the EM system are coupled, and together affect hybrid power system performance. To achieve coordinated control and multi-objective optimisation of a hybrid power system, a hierarchical distributed control method was proposed, and a validation study was conducted based on model-in-the-loop simulations (MILs) and hardware-in-the-loop simulations (HILs). First, a real-time EM strategy based on a combination of forward dynamic programming (FDP) and model predictive control (MPC) methods was proposed to optimise the power allocation for multiple energy sources. Second, a distributed controller based on a consistency algorithm was proposed to coordinate the differences in the characteristics of multiple energy sources. A dynamic virtual impedance-based droop controller was designed for dynamic tracking of the reference power. The performance of the three-layer control structure was comprehensively validated through MILs and HILs. The results show that the dynamic virtual impedance-based droop control method can track the nonlinear reference power with control deviation within 5 %. The distributed controller is able to keep the bus voltage stable. The global control accuracy of the DC bus voltage is improved by 18.08 %, and the battery current global fluctuations is reduced by 17.4 %. The real-time FDP-MPC-based EM strategy can achieve 99.89 % energy savings and emissions reduction compared to the global DP-MPC-based method, with greater robustness, real-time performance. The results demonstrate that the proposed method is effective for real-time applications and can achieve hierarchical and multi-objective optimal control of the hybrid power system.
| Type: | Article |
|---|---|
| Title: | Hierarchical distributed MPC method for hybrid energy management: A case study of ship with variable operating conditions |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.rser.2023.113894 |
| Publisher version: | https://doi.org/10.1016/j.rser.2023.113894 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Multi-energy hybrid power; energy management; hierarchical distributed control; MPC; real-time optimisation; model and hardware in the loop simulation |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10217260 |
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