Hybrid direct power/current control using feedback linearization of three-level four-leg voltage source shunt active power filter

This study proposes a new simplified hybrid space vector modulation (HSVM) algorithm for multilevel diode clamped converter (DCC). The main idea consists in combining the advantages of both space vector modulation (SVM) algorithms synthesised in abc and αβ coordinates to establish a new hybrid, simplified and generalised SVM algorithm. The HSVM algorithm offers a simple method to compute the duration time, automatic generation of all redundant states of the adjacent switching vectors without triangles identification stage and switching sequence definition for any DCC level. Moreover, all the computational processes are performed in one unique sector thanks to the proposed new reference voltage vector defined in abc‐coordinates. The proposed algorithm does not require any coordinates transformation or lookup tables. Also, it can be implemented with minimum computational burden using a low resources digital platform. The proposed HSVM is verified through MATLAB simulation and validated experimentally using three‐level DCC laboratory prototype. For high‐level DDC, the HSVM is tested in real time using hardware‐in‐the loop testing technology. Different case studies are performed to demonstrate the high performance of the proposed HSVM and its ability in lowering the computational resources requirement.

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“…In [14, 21], the reference vector v * is projected on the axes of 60° g–h coordinates system as shown in Fig. 5.…”

Section: Proposed Hybrid Svm Algorithm For N‐level DCCmentioning

confidence: 99%

Simplified hybrid space vector modulation for multilevel diode clamped converter

Bouzidi

Barkat

Krama

2020

IET power electron.

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“…So everything depends on the appropriate choice of this surface [20]. Therefore, for simplicity, Equation (27) has been transformed for the sliding surface for SM-MPPT.…”

Section: Sliding Mode Based Mpptmentioning

confidence: 99%

“…These nonlinear loads draw non-sinusoidal currents from utility grids, which create harmonic currents and low power factors [25,26]. The latter present many harmful effects like power losses, heat and saturation of transformers, and the degradation of electrical devices [25,27]. On the other hand, the increased demand of good quality of power makes the use of power quality improvement devices essential [28], and much research is interested in double function grid-tied PV systems to simultaneously perform power quality improvement and active power injections.The control of double function grid-tied PV system is an effective research field, and numerous control strategies have been discussed in the literature [1,24,[29][30][31].…”

mentioning

confidence: 99%

Real-Time Implementation of High Performance Control Scheme for Grid-Tied PV System for Power Quality Enhancement Based on MPPC-SVM Optimized by PSO Algorithm

Krama

Zellouma²,

Rabhi

et al. 2018

Energies

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This paper proposes a high performance control scheme for a double function grid-tied double-stage PV system. It is based on model predictive power control with space vector modulation. This strategy uses a discrete model of the system based on the time domain to generate the average voltage vector at each sampling period, with the aim of canceling the errors between the estimated active and reactive power values and their references. Also, it imposes a sinusoidal waveform of the current at the grid side, which allows active power filtering without a harmonic currents identification phase. The latter attempts to reduce the size and cost of the system as well as providing better performance. In addition, it can be implemented in a low-cost control platform due to its simplicity. A double-stage PV system is selected due to its flexibility in control, unlike single-stage strategies. Sliding mode control-based particle swarm optimization (PSO) is used to track the maximum power of the PV system. It offers high accuracy and good robustness. Concerning DC bus voltage of the inverter, the anti-windup PI controller is tuned offline using the particle swarm optimization algorithm to deliver optimal performance in DC bus voltage regulation. The overall system has been designed and validated in an experimental prototype; the obtained results in different phases demonstrate the higher performance and the better efficiency of the proposed system in terms of power quality enhancement and PV power injection.Energies 2018, 11, 3516 2 of 26 and in the center of a big city [6], because sunlight is available almost everywhere. Photovoltaic electricity can be produced as close as possible to its place of consumption in a decentralized way [7], directly to the user, which makes it accessible to a large part of the world's population.Much research and development are conducted about the critical elements of photovoltaic energy; starting with energy generation [6], conversion, then injection into the network [8], as well as energy management [9]. The key problem with photovoltaic energy generation is the difficulty of achieving the highest energy yield for PV panels. The voltage of a PV panel strongly depends on the connected load due to the non-linear behavior of the PV cell [10]. Therefore, various Maximum Power Point Tracking (MPPT) algorithms have been established to allow panels operate in optimal conditions, and thus, to track the maximum power point [6,11]. Among these algorithms are "Perturbation & Observation (P&O)" [12] and "incremental conductance (InCon)" [13] which are the most used due to the simplicity of their implementation. However, the abovementioned methods are constrained by the amplitude of the injected perturbations, which determines the importance of the oscillations around the Maximum power point (MPP) as well as the convergence time. To overcome this problem, several algorithms have been developed based on techniques derived from artificial intelligence such as Fuzzy Logic [14], Neural Network [15], Neuro-Fuz...

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“…Some methods are based on the idea of adding auxiliary power circuits in order to redistribute the electrical charge between capacitors [28]. A very interesting solution proposed in [29], is to use the 3DSVM to stabilize the capacitors voltages in three-level four-leg inverter. The idea is to minimize a cost function defined as the quadratic sum of the differences between the capacitors voltages and their reference values [29].…”

Section: -The Tuned Frequency Cannot Vary Under the Different Harmonmentioning

confidence: 99%

“…The idea is to minimize a cost function defined as the quadratic sum of the differences between the capacitors voltages and their reference values [29]. Thanks to an appropriate selection of the redundant vectors this function can be minimized to zero and the capacitors voltages will be kept at their reference values [29].…”

Section: -The Tuned Frequency Cannot Vary Under the Different Harmonmentioning

confidence: 99%

Backstepping control of three-phase three-level four-leg shunt active power filter

Badra¹,

Barkat²,

Bouzidi³

2017

J. Fundam and Appl Sci.

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In this paper, backstepping control for three-level four-leg shunt active power filter (SAPF) system is proposed. The adopted filtering topology requires both a three-dimensional space vector modulation (3DSVM) for controlling the three-level four-leg inverter as well as DC voltage and filter currents control. The regulation of the DC voltage and filter currents is accomplished by backstepping controllers. The voltage-balancing control of two split DC capacitors of the three-level four-leg SAPF is achieved using three-level three-dimensional space vector modulation equipped by a balancing strategy based on the effective use of the redundant switching states of the inverter voltage vectors. The simulation results show the effectiveness of the proposed filtering system in terms of the compensation of the harmonics and the zero sequence current and the operation at unity power factor.

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Hybrid direct power/current control using feedback linearization of three-level four-leg voltage source shunt active power filter

Cited by 33 publications

References 28 publications

Simplified hybrid space vector modulation for multilevel diode clamped converter

Simplified hybrid space vector modulation for multilevel diode clamped converter

Real-Time Implementation of High Performance Control Scheme for Grid-Tied PV System for Power Quality Enhancement Based on MPPC-SVM Optimized by PSO Algorithm

Backstepping control of three-phase three-level four-leg shunt active power filter

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