Model Predictive Control on Back-to-Back Parallel-Series Cascaded H-Bridge Converters

Oliveira, Felipe Silva; Encarnação, Lucas Frizera; Camargo, Renner Sartorio; Pena, Emilio Jose Bueno

doi:10.1109/isgteurope.2019.8905509

Cited by 12 publications

(2 citation statements)

References 11 publications

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“…In most cases of CCS-MPC, pulse width modulation (PWM) scheme is used to generate a control signal based on the duty cycle [23,24]. On-line optimisation of the system is the primary concern of this strategy handled by explicit MPC (EMPC) [25][26][27]. EMPC produces some feedback control laws and a tree search to reach the state feedback laws, requiring a large storing capacity and short prediction horizons.…”

mentioning

confidence: 99%

Generalised predictive controller (GPC) design on single‐phase full‐bridge inverter with a novel identification method

Memeghani

Ghamari

Jouybari

et al. 2022

IET Control Theory & Appl

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The design of an on-line generalised predictive control (GPC) technique with a novel identification method is presented in this paper for a single-phase full-bridge inverter in the presence of different disturbances. The controller uses system discrete-time model to reach the control variables with a prediction over these values, followed by computing a cost function for control aims. However, in this controller, the need for the mathematical model of the system is removed since the black-box identification strategy is used. Moreover, GPC structure has many advantages including low computational complexity, systematic design procedure, and fixed switching frequency that makes it a good alternative for practical applications. Various disturbances can have a negative impact on a DC-AC inverter; thus, considering robust dynamics and ease of implantation, the GPC scheme is used along with an improved exponential regressive least square identification algorithm as an adaptive strategy in the controller. Moreover, the prediction horizons of this controller have been increased, resulting in its low steady-state error and better performance. Furthermore, harmonics in the sinusoidal signal can decrease the total efficiency of the system; thus, an LC filter is used to reduce the level of total harmonic distortion. However, the stability of the filter is the most challenging issue in designing a suitable controller. Finally, the strength of the current controller is verified using experimental and simulations results. INTRODUCTIONNowadays, power inverters are utilised in connecting renewable energy sources for power generation. Single-phase inverters are well-known and used in various industrial applications. A DC-AC H-bridge voltage source inverter (VSI) topology is selected here to feed different linear loads [1,2]. The generated sinusoidal waveform of an inverter must have a constant amplitude and frequency with a minimal rate of THD. To limit the THD level, various filters are suggested including LLCL, L, LC, and LCL. In fact, characteristics of the LC-type filter, make it can be the most suitable one for stand-alone structures (load connected) [3][4][5][6]. Stability proof of the filter is the primary concern which can harm system dynamics; thus, two strategies were presented for this challenge: passive and active damping schemes.In passive damping strategy, the inductor is modelled with a series resistor, while total system efficiency can be affected. However, for the second scheme, a closed-loop control strategies have been introduced [7]. However, the following This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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mentioning

confidence: 99%

Generalised predictive controller (GPC) design on single‐phase full‐bridge inverter with a novel identification method

Memeghani

Ghamari

Jouybari

et al. 2022

IET Control Theory & Appl

View full text Add to dashboard Cite

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“…Model predictive control has been a research and development topic since the 1970s when it was initially introduced into the process industry [39][40][41]. The MPC has a broad concept, involving many areas, its central concept being the prediction, based on a mathematical model, of all the future system states, given a determined time horizon.…”

Section: Model Predictive Controlmentioning

confidence: 99%

A Novel Cascaded Multilevel Converter Topology Based on Three-Phase Cells—CHB-SDC

et al. 2020

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This paper proposes a new cascaded multilevel converter topology based on three-phase H bridge cells with a common DC-link structure. The proposed multilevel converter topology main advantages, compared with literature renowned multilevel converters topologies, are discussed in the paper, such as modularity, construction, implementation cost, and DC voltage ripple mitigation. Despite presenting an elementary structure and easy implementation, the use of classic PWM switching strategies is not feasible for this topology, causing the appearance of several short-circuit states between its capacitors. Thus, a graph theory algorithm combined with a model predictive control is also proposed in this work to identify and avoid the new cascaded multilevel converter short-circuit switching states and, concomitantly, guaranteeing the converter output power quality. In order to validate the presented topology applicability, a low voltage synchronous static compensators (STATCOM) with an optimal switching vector model predictive control (OSV-MPC) is implemented in a hardware-in-the-loop platform. The real-time experimental results prove the proposed multilevel topology and the OSV-MPC control strategy effectiveness.

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Design of a robust adaptive self-tuning regulator controller on single-phase full-bridge grid-connected inverter

Ghamari

Gholizade‐Narm

Khavari

2022

Int. J. Dynam. Control

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Model Predictive Control on Back-to-Back Parallel-Series Cascaded H-Bridge Converters

Cited by 12 publications

References 11 publications

Generalised predictive controller (GPC) design on single‐phase full‐bridge inverter with a novel identification method

Generalised predictive controller (GPC) design on single‐phase full‐bridge inverter with a novel identification method

A Novel Cascaded Multilevel Converter Topology Based on Three-Phase Cells—CHB-SDC

Design of a robust adaptive self-tuning regulator controller on single-phase full-bridge grid-connected inverter

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