Extremum Seeking-Based Model Predictive MPPT for Grid-Tied Z-Source Inverter for Photovoltaic Systems

Sajadian, Sally; Ahmadi, Reza; Zargarzadeh, Hassan

doi:10.1109/jestpe.2018.2867585

Cited by 38 publications

(22 citation statements)

References 40 publications

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“…For traditional ZSI(qZSI) and SB-ZSI, the voltage regulation capacity is constant with the same shoot-through ratio and input DC voltage, which is irrelevant to the impact factor k(k = 2m 2 Lcosφ/4ZT s ). The voltage boost expression for ASC-qZSI has been derived in (9). We can see the intuitive analysis result through Fig.…”

Section: Voltage Regulation Capacitymentioning

confidence: 92%

“…The voltage regulation capability of the ASC-qZSI operating in CCM and DCM is calculated according to (3), (9), and (13), as shown in Fig. 9.…”

Section: Voltage Regulation Capabilitymentioning

confidence: 99%

“…3b, the antiparallel switch eliminates the possibility of DC-link voltage distortion. The novel topology can be used to the drive system of applications such as electric vehicles and photovoltaic generation systems by batteries, super-capacitors, or photovoltaic cells [8][9][10][11][12][13], especially the circumvents where the volume and weight of converter are the critical factors.…”

Section: Introductionmentioning

confidence: 99%

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CCM and DCM analysis of ASC‐qZSIs

Dong

Zhang

2019

IET Power Electronics

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A novel active-switched-capacitor/inductor quasi-Z-source inverter (ASC-qZSI) with an anti-parallel switch which allows discontinuous conduction mode (DCM) was proposed. The analysis of the continuous conduction mode (CCM) and the DCM of the novel topology was also presented. Varying ASC-qZSI inductances and load conditions were found to lead to the two operational modes. The CCM/DCM boundary condition was derived. Detailed analysis of the voltage regulation capability, inductor current ripples, switching devices stresses, and converter loss were carried on for CCM and DCM. Simulation and experimental verification have been presented for the theoretical findings.

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Section: Voltage Regulation Capacitymentioning

confidence: 92%

“…The voltage regulation capability of the ASC-qZSI operating in CCM and DCM is calculated according to (3), (9), and (13), as shown in Fig. 9.…”

Section: Voltage Regulation Capabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CCM and DCM analysis of ASC‐qZSIs

Dong

Zhang

2019

IET Power Electronics

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“…In some cases, it is possible to solve the optimization problem offline by multi-parametric programming; thus, the implementation is reduced to some calculations and a look-up table [22]. Previous works have developed PC for RE applications using inverters with satisfactory results [31][32][33].…”

Section: Proposed Control Strategymentioning

confidence: 99%

A New Predictive Control Strategy for Multilevel Current-Source Inverter Grid-Connected

et al. 2019

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The DC/AC converters—commonly called inverters—transform the DC into AC and are classified as Voltage-Source Inverters (VSIs) or Current-Source Inverters (CSIs). A variant of the CSIs are the Multilevel Current-Source Inverters (MCSIs). In this paper, a new predictive control strategy for an MCSI with multiple inputs and grid-connected is proposed. The control technique uses the advantages of the Sliding Mode Control (SMC) for the balance of current in the input and Predictive Control (PC) to obtain a suitable grid current, since it separates both functions. The calculations are based on conventional Kirchhoff’s Voltage Law (KVL) and knowledge of the mathematical model of the system is not required. Generally, traditional MCSIs use large input inductors (100–1000 mH). In this paper, it is achieved a reduction in size of the input inductors. Simulation results are shown to validate the proposed control.

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“…E LECTRIC power generation from grid-connected and standalone photovoltaic (PV) plants has seen a spectacular increasing rate in the last decade, where a global solar installation of 509 GW has been reached in 2018 and is expected to reach 1,296 GW in 2023 [1]. In spite of this important installed PV capacity, low energy yields due to poor power management at PV array and power processing unit levels are still an open problem [2]- [4].…”

Section: Introductionmentioning

confidence: 99%

Optimal Energy Harvesting From a Multistrings PV Generator Based on Artificial Bee Colony Algorithm

Motahhir¹,

Chouder

Hammoumi

et al. 2021

IEEE Systems Journal

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Photovoltaic (PV) systems based on multistring configuration are the best effective solution, given its advantages in terms of system availability, reliability, and energy efficiency. In this particular configuration each substring has its own dc-dc converter and a dedicated maximum power search algorithm which increase the cost and complexity. In this article, an efficient centralized global maximum power tracking (GMPPT) algorithm for multistring PV array subject to partial shading conditions is proposed. The algorithm is based on artificial bee colony (ABC) as an optimization approach to provide the optimal duty cycles allowing the extraction of the optimal global maximum power from each substring. In particular, the proposed approach allows significant reduction of the required sensors to only one pair of current and voltage sensors, at the common point of connection of the overall PV strings. The simulation study has been carried out under Cadence/Pspice and MATLAB/Simulink platforms on the I-V curves to confirm the effectiveness of the proposed algorithm when several shading patterns occur. In addition, complex shading pattern of a daily profile has been also carried out to demonstrate the GMPPT finding in dynamically variable conditions. Performance comparison against particle swarm optimization based maximum power point tracking algorithm and the traditional perturb and observe method has also been carried out. The obtained simulation and experimental results have shown the effectiveness and a good tracking capability of the proposed ABC algorithm in a multistring PV array configuration under uniform and nonuniform irradiance. Index Terms-Artificial bee colony (ABC) algorithm, digital signal processor (DSP), global maximum power tracking

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Extremum Seeking-Based Model Predictive MPPT for Grid-Tied Z-Source Inverter for Photovoltaic Systems

Cited by 38 publications

References 40 publications

CCM and DCM analysis of ASC‐qZSIs

CCM and DCM analysis of ASC‐qZSIs

A New Predictive Control Strategy for Multilevel Current-Source Inverter Grid-Connected

Optimal Energy Harvesting From a Multistrings PV Generator Based on Artificial Bee Colony Algorithm

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