A Multilevel Inverter Bridge Control Structure with Energy Storage Using Model Predictive Control for Flat Systems

Mercorelli, Paolo

doi:10.1155/2013/750190

Cited by 8 publications

(7 citation statements)

References 30 publications

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“…In the proposed MPVC, determination of the duration for the nonzero voltage vector is the key to control system. Hence, slopes of the capacitor filter voltage for the nonzero voltage 1 vector and the zero voltage vector 0 will be calculated easily from (11) [14,15,23].…”

Section: Principle Of Mpvcmentioning

confidence: 99%

Model Predictive Voltage Control with Optimal Duty Cycle for Three-Phase Grid-Connected Inverter

Ebrahimpanah

Chen

Zhang

et al. 2019

Journal of Control Science and Engineering

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This paper proposes a model predictive voltage control (MPVC) strategy with duty cycle control for grid-connected three-phase inverters with output LCL filter. The model of the system is used to predict the capacitor filter voltage according to the future output current for each possible switching state at each sampling period. Then the cost function for each prediction is determined and the switching state is selected. In the proposed method, two voltage vectors are applied during one sampling interval to achieve better steady-state performance. Finally, the optimal duration of the nonzero voltage vector is defined based on the duty cycle optimization, which is vital to the control system. The proposed strategy offers a better reference tracking error with less THD in linear and nonlinear load situations. The effectiveness of the proposed method has been verified by MATLAB/Simulink and experimental results exhibit a better steady-state performance with less sampling frequency.

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Section: Principle Of Mpvcmentioning

confidence: 99%

Model Predictive Voltage Control with Optimal Duty Cycle for Three-Phase Grid-Connected Inverter

Ebrahimpanah

Chen

Zhang

et al. 2019

Journal of Control Science and Engineering

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“…With the increasing demand for conversion efficiency during recent years, multilevel converter topologies have become more and more applied to the grid-connected PV generation system [1][2][3][4]. Among all kinds of multilevel inverters, the cascaded H-bridge (CHB) has many advantages, such as modularization, simplicity, and high reliability, which makes it become the most attractive topology [5][6][7][8][9]. In addition, the CHB topology makes it possible to, respectively, regulate each DC-side voltage and, thus, realizing the maximum power point tracking (MPPT) of each PV module.…”

Section: Introductionmentioning

confidence: 99%

A Research on Cascaded H-Bridge Module Level Photovoltaic Inverter Based on a Switching Modulation Strategy

Mao

Zhang

et al. 2019

Energies

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The stable operating region of a photovoltaic (PV) cascaded H-bridge (CHB) grid-tied module level inverter is extended by adopting the hybrid modulation strategy. However, the traditional single hybrid modulation method is unable to regulate the DC-side voltage of each module precisely, which may aggravate the fluctuation of modules’ DC-side voltages or even cause the deviation of modules’ DC-side voltages under some fault conditions and, thus, degrade the energy harvesting of PV panels. To tackle this problem, a switching modulation strategy for PV CHB inverter is proposed in this paper. When the CHB inverter is operating in normal mode, the hybrid modulation strategy containing the zero state is adopted to suppress DC-side voltage fluctuation, thereby, improving the output power of PV modules. When the CHB inverter is operating in fault mode owing to failing solar panels, the hybrid modulation strategy without the zero state is utilized to make the DC-side voltages reach the references and, thus, maintain a higher energy yield under fault conditions. Experimental results achieved by a laboratory prototype of a single-phase eleven-level CHB inverter demonstrate both the feasibility and effectiveness of the proposed method.

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“…In electric grid, hybrid 'more-electric vehicles', automobile high-intensity discharge headlamps, uninterruptible power supply, and luxury loads application multiport and multilevel power converters popular solutions [1][2][3][4]. Some advanced predictive control based on the multilevel converter is also proposed for energy storage [5,6]. Fuel cells have many features, including compatibility, size, and modularity [7,8].…”

Section: Introductionmentioning

confidence: 99%

Double Stage Double Output DC–DC Converters for High Voltage Loads in Fuel Cell Vehicles

2019

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This article aims to enhance the output voltage magnitude of fuel cells (FCs), since the actual generation is low. The traditional technique is too complicated and has a cascaded or parallel connection solution to achieve high voltage for multiple loads in vehicles. In this case, electronic power converters are a viable solution with compact size and cost. Hence, double or multiple output DC-DC converters with high voltage step up are required to feed multiple high voltage loads at the same time. In this article, novel double stage double output (DSDO) DC-DC converters are formulated to feed multiple high voltage loads of FC vehicular system. Four DSDO DC-DC converters called DSDO L-L, DSDO L-2L, DSDO L-2LC, and DSDO L-2LC are developed in this research work and all the converters are derived based on the arrangement of different reactive networks. The primary power circuitry, conceptual operation, and output voltage gain derivation are given in detail with valid proof. The proposed converters are compared with possible parallel combinations of conventional converters and recently available configuration. Comprehensive numerical simulation and experimental prototype results show that our theoretical predictions are valid and that the configuration is applicable for real time application in FC technologies for 'more-electric vehicles'.Energies 2019, 12, 3681 2 of 19 elements [17,18]. Further, for implementation, they need complex control logic and increased driver modules to protect and control the semiconductor devices. Quadratic boost converters achieve a high voltage conversion ratio, but high current/voltage rating components/devices and the internal resistance of the inductors limits the output voltage [19]. Multistage diode/capacitor-based DC-DC converters have been proposed to achieve high voltage gain [20][21][22][23][24]. However, multiple discharging/charging loops of the capacitors lead to increased conduction loss, cost, and size, and reduced efficiency due to their parasitic nature. Converters have been proposed to get multiple outputs from a single input source by using push-pull, half-bridge, full-bridge, and fly-back converter topologies [25][26][27]. In all cases, high voltage is obtained with a high transformer rating on the primary side. Therefore, these converters cannot provide a proper solution for low weight/cost applications.The parallel configurations of traditional converters such as boost, buck-boost, Cuk, single ended primary inductance converter (SEPIC), and ZETA can be possible solutions to achieve multiple outputs. The power circuitry of possible configurations without common front-end structure are shown in Figure 1a-e. These configurations provide two outputs using two different control switches. However, the voltage gain is not significantly improved, even when using a large number of components and devices. Furthermore, in order to reduce the component or device counts, common front-end structure can be a solution, as shown in Figure 1f-j. These configurations provide dual output...

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A Multilevel Inverter Bridge Control Structure with Energy Storage Using Model Predictive Control for Flat Systems

Cited by 8 publications

References 30 publications

Model Predictive Voltage Control with Optimal Duty Cycle for Three-Phase Grid-Connected Inverter

Model Predictive Voltage Control with Optimal Duty Cycle for Three-Phase Grid-Connected Inverter

A Research on Cascaded H-Bridge Module Level Photovoltaic Inverter Based on a Switching Modulation Strategy

Double Stage Double Output DC–DC Converters for High Voltage Loads in Fuel Cell Vehicles

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