Microsecond nonlinear model predictive control for DC‐DC converters

Lekić, Aleksandra; Hermans, Ben; Jovičić, Nenad S.; Patrinos, Panagiotis

doi:10.1002/cta.2737

Cited by 14 publications

(11 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(4) In contrast, the grounding resistance change has an insignificant impact on insulator flashover in the case of shielding failure. (5) The study offers a research platform for the identification of back-flashover and shielding-failure phenomena and enables the straightforward evaluation of the lightning performance of the HVDC transmission systems.…”

Section: Discussionmentioning

confidence: 99%

“…Transportation of a large amount of power over long distances (≥500 km) results in problems such as reduction of power transfer, generation of reactive power and voltage profile variation [3]. Therefore, HVDC transmission is considered an optimal solution for connecting large-scale offshore renewable energy sources such as wind farms to power grids and linking distant generation sources with load centers [4,5]. Other benefits can be achieved by HVDC transmission systems, such as interconnection between unsynchronized AC systems, improving system stability and lower transmission line costs [6,7].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of the Transient Overvoltages of HVDC Transmission Lines Caused by Lightning Strikes

et al. 2022

View full text Add to dashboard Cite

High-voltage direct-current (HVDC) transmission systems are considered an outstanding solution due to high electrical losses emerging from long-distance transmission. However, HVDC transmission lines (TLs) are vulnerable to lightning strikes. In this work, the Yunnan-Guizhou 500 kV HVDC transmission system is used as a case study to evaluate the impact of lightning strikes on DC-TL overvoltages, as no research studies have been conducted to assess the lightning transient behavior of DC-TLs. A comprehensive investigation of the 500 kV DC-TL transient performance during lightning strikes is performed, taking into account different technical aspects that have not been studied in detail by previous researchers. Additionally, analysis of the back-flashover phenomenon has not been conducted well in previous work, and results on the effect of changing the lightning strike current peak and tower grounding resistance on shielding-failure flashover are quite limited. The distributed-parameter model is used to represent the DC-TL using the electromagnetic transients program (EMTP), considering real parameters of shielding wires and DC towers to study the lightning impact in the case of back-flashover and shielding-failure phenomena. Lightning strike is applied to the shielding wire, and the impact of increasing the peak value of lightning current is investigated on the back-flashover occurrence. Moreover, the influence of tower grounding resistance variation on the transient overvoltages across the tower body and back-flashover phenomenon is evaluated. From the simulation results, increasing the lightning current peak and grounding resistance results in higher overvoltages across the tower body, which increases the probability of back-flashover. Additionally, the shielding failure of the TL is assumed, and the variation impact of the lightning current peak and grounding resistance on shielding-failure flashover is investigated. The results show that the impact of the lightning current peak has a more significant impact than the grounding resistance in the case of shielding-failure flashover.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of the Transient Overvoltages of HVDC Transmission Lines Caused by Lightning Strikes

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The delays in reaching the convergence, due to model inaccuracies, were lower than 2 ms in the considered scenarios. This suggested that the proposed observer could be possibly exploited for current mode control of SMPS or for more sophisticate model-based control strategies such as model predictive control [26]. The main drawback of this approach was the computational effort, which was strongly reduced with respect to [21], due to the analytical formulation, but was still high for a low-cost microcontroller (e.g., the STM32F4 exploited in this work).…”

Section: Discussionmentioning

confidence: 99%

Online Estimation of the Current Ripple on a Saturating Ferrite-Core Inductor in a Boost Converter

Lodi

Oliveri

2020

Sensors

View full text Add to dashboard Cite

In this paper, a nonlinear observer is proposed for the estimation of the current ripple in a ferrite-core inductor working in partial saturation, mounted on a boost converter. The estimator is based on a recently proposed nonlinear inductance model, which expresses the inductance as a function of the inductor current, taking into account also the non-negligible effects of the core temperature. The proposed observer is implemented on a low-cost microcontroller and tested, both offline and online, on a real boost converter with different operating conditions. The offline tests show a satisfactory estimation accuracy both during the electrical (fast) and thermal (slow) transients. Due to the high microcontroller latency, some delays and inaccuracies occur during electrical transients in the online tests. This work suggests that, in order to exploit the observer for control purposes, the target architecture should be a high-performance microcontroller, a system-on-chip, or a field programmable gate array, where parallelism can be exploited to speed-up the computations. The proposed implementation can be instead suitable for switch-mode power supply (SMPS) monitoring purposes.

show abstract

“…This makes the MPC an effective control tool in the power management scheme of the AC-DC MGs, power electronic converters and drives applications, wind power applications, and converter control in DC and AC MGs. 24,[26][27][28] Further, the FCS-MPC approach would achieve faster dynamics for current tracking and better steady-state responses and accessible digital implementation. 29 Owing to the above features, this paper investigates the FCS-MPC as a current tracking controller for associated power converters control.…”

Section: Introductionmentioning

confidence: 99%

Model predictive control of solar photovoltaic‐based microgrid with composite energy storage

Majji

Mishra

Dongre

2022

Circuit Theory & Apps

View full text Add to dashboard Cite

Summary The renewable energy (e.g., solar photovoltaic)‐based grid‐connected microgrid (MG) with composite energy storage system (CESS) is feasible to ensure sustainable and quality power to the commercial and domestic load demands. Effective control systems provide the dynamic performance of such deployed MGs. This paper investigates the application of the finite control‐set model predictive controller (FCS‐MPC) for solar photovoltaic‐based grid‐connected MGs with composite energy storage. FCS‐MPC considers the discrete nature of interfacing (DC–AC and DC–DC) converters into the control algorithm to predict the optimal control command for reference current tracking. Compared to classical control approaches, FCS‐MPC provides a fast‐dynamic response, discards the modulation stage, and effectively handles the effects of dynamic source and load variations and nonlinear loads. The control system encapsulates a proportional–integral (PI) controller, low‐pass filter (LPF), power management algorithm (PMA) unit, and followed by the FCS‐MPC approach. The CESS unit consists of a battery and supercapacitor storage system. The efficacy of the FCS‐MPC approach is verified through the MATLAB/Simulink results. Solar photovoltaic variation due to irradiance, utility grid availability, electricity pricing, and dynamic load variations are considered in the implementation. Furthermore, real‐time simulation of the proposed method is validated using OPAL‐RT OP4510 real‐time simulator.

show abstract

Microsecond nonlinear model predictive control for DC‐DC converters

Cited by 14 publications

References 25 publications

Evaluation of the Transient Overvoltages of HVDC Transmission Lines Caused by Lightning Strikes

Evaluation of the Transient Overvoltages of HVDC Transmission Lines Caused by Lightning Strikes

Online Estimation of the Current Ripple on a Saturating Ferrite-Core Inductor in a Boost Converter

Model predictive control of solar photovoltaic‐based microgrid with composite energy storage

Contact Info

Product

Resources

About