Evaluation of cascaded H-bridge inverter for utility-scale photovoltaic systems

Sastry, J.; Bakas, Panagiotis; Kim, Hongrae; Wang, Lei; Μαρινόπουλος, Αντώνιος

doi:10.1016/j.renene.2014.03.049

Cited by 79 publications

(28 citation statements)

References 7 publications

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“…The objective is to obtain the diagonal matrix in the series combination, between the matrix of the decoupling network and the matrix of the current-loop closed system [38]. In the inverted decoupling method, the off-diagonal elements are derived as (24) and (25).…”

Section: Voltage Controller Design Methodsmentioning

confidence: 99%

“…The multi-level converter has been used mainly in renewable energy systems using high-voltage above kV, but researches are expanding to low-voltage applications to take advantage of the aforementioned merits [16,17]. Among several studies, because isolated direct current (DC) sources are naturally obtained from the photovoltaic (PV) arrays, and can be easily modularized compared to other multilevel converters, a PV generation system with the cascaded H-bridge multilevel inverter topology has been studied [16][17][18][19][20][21][22][23][24][25]. Reference [16] presented a study on the reactive power compensation for the single phase grid-connected cascaded H-bridge multilevel inverter, but they did not fully suggest the method for designing the controller.…”

Section: Introductionmentioning

confidence: 99%

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Optimized Modeling and Control Strategy of the Single-Phase Photovoltaic Grid-Connected Cascaded H-bridge Multilevel Inverter

Lee

Kim

2018

Electronics

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This paper presents the modeling and control-loop design method with an inverted decoupling scheme of a single-phase photovoltaic grid-connected five-level cascaded H-bridge multilevel inverter. For the unity power factor, the proportional and integral current controller with a duty ratio feed-forward compensation is used. In addition, in order to achieve the maximum power point tracking of each photovoltaic array, when the stacked modules are in the partial shading condition, each direct current (DC) voltage is stably controlled to their maximum power points (MPP) by dedicated voltage controllers of each H-bridge module. This paper also presents a control method that minimizes the effect of the loop-interaction in the design of an individual DC-link voltage control loop in a two-input two-output system. The proposed control methods of the cascaded H-bridge multilevel inverter are validated through the simulation and experimental results of the 2-kW prototype hardware.

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Section: Voltage Controller Design Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimized Modeling and Control Strategy of the Single-Phase Photovoltaic Grid-Connected Cascaded H-bridge Multilevel Inverter

Lee

Kim

2018

Electronics

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“…In Design calculations for CHB inverters, selection of devices, device loss calculations etc. are discussed in [16,17]. The procedure for the selection of CHB inverter and AC side filter components is shown in Table 1.…”

Section: Design Calculations For the Systemmentioning

confidence: 99%

A Hybrid PV-Battery System for ON-Grid and OFF-Grid Applications—Controller-In-Loop Simulation Validation

et al. 2020

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In remote locations such as villages, islands and hilly areas, there is a possibility of frequent power failures, voltage drops or power fluctuations due to grid-side faults. Grid-connected renewable energy systems or micro-grid systems are preferable for such remote locations to meet the local critical load requirements during grid-side failures. In renewable energy systems, solar photovoltaic (PV) power systems are accessible and hybrid PV-battery systems or energy storage systems (ESS) are more capable of providing uninterruptible power to the local critical loads during grid-side faults. This energy storage system also improves the system dynamics during power fluctuations. In present work, a PV-battery hybrid system with DC-side coupling is considered, and a power balancing control (PBC) is proposed to transfer the power to grid/load and the battery. In this system, a solar power conditioning system (PCS) acts as an interface across PV source, battery and the load/central grid. With the proposed PBC technique, the system can operate in following operational modes: (a) PCS can be able to work in grid-connected mode during regular operation; (b) PCS can be able to charge the batteries and (c) PCS can be able to operate in standalone mode during grid side faults and deliver power to the local loads. The proposed controls are explained, and the system response during transient and steady-state conditions is described. With the help of controller-in-loop simulation results, the proposed power balancing controls are validated, for both off-grid and on-grid conditions.

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“…The switches in the CHMLI support the same voltage stress. This multilevel inverter can use directly DC sources to generate staircase voltage levels and continue to operate even when a full bridge is shutdown [4]- [7]. The cascaded H-Bridge multilevel inverter is frequently studied for command improvement involving synchronization strategy and output voltage power levels enhancement [8]- [9].…”

Section: Introductionmentioning

confidence: 99%

A Cascaded H-Bridge Multilevel Inverter with SOC Battery Balancing

Khalili¹,

Raihani²,

Bouattane³

et al. 2017

ijacsa

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Abstract-In this paper, we present a single phase 5 levels HBridge multilevel inverter (CHMLI) with battery balancing technique. Each single full bridge is directly connected to a battery inside the power bank. The different combinations and batteries wiring sets offer the possibility to control the batteries discharge. The cascaded H-Bridge multilevel inverter is first described and the discharge is studied in normal conditions under different stress scenarios. State of charge (SOC) balancing technique is then achieved using an equalization algorithm controlling the different switching combination inside the power bank. Results of the simulation model with and without the SOC balancing is presented using Matlab.

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Evaluation of cascaded H-bridge inverter for utility-scale photovoltaic systems

Cited by 79 publications

References 7 publications

Optimized Modeling and Control Strategy of the Single-Phase Photovoltaic Grid-Connected Cascaded H-bridge Multilevel Inverter

Optimized Modeling and Control Strategy of the Single-Phase Photovoltaic Grid-Connected Cascaded H-bridge Multilevel Inverter

A Hybrid PV-Battery System for ON-Grid and OFF-Grid Applications—Controller-In-Loop Simulation Validation

A Cascaded H-Bridge Multilevel Inverter with SOC Battery Balancing

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