Decentralized Controller for a Grid Tied Cascade Multilevel Inverter

Vivert, Miguel; Patiño, Diego; Díez, Rafael; Cobaleda, Diego Bernal; Cousineau, Marc

doi:10.1109/ccac.2019.8920877

Cited by 3 publications

(10 citation statements)

References 8 publications

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“…For the Flying-Capacitor Multilevel Converter, in [3] a decentralized local controller is proposed, which consists of three stages: balancing the CVs, regulating the output current and a bypass circuit used to manage a reconfiguration order. A similar control method is implemented in [8], for a CFBMC in a grid-tied mode, balancing the output voltage of the FBs and controlling the output current. [3,8] are based on this thesis.…”

Section: Control Techniques For Multilevel Convertersmentioning

confidence: 99%

“…A similar control method is implemented in [8], for a CFBMC in a grid-tied mode, balancing the output voltage of the FBs and controlling the output current. [3,8] are based on this thesis.…”

Section: Control Techniques For Multilevel Convertersmentioning

confidence: 99%

“…In the case of Multiphase Buck, balancing the leg current produces a suitable distribution of the output current of the system [6]. For the case of CFBMC, it is possible to balance the output voltages of each FB for maintaining equalized the power delivered by each FB [7][8][9][10], or if the sources are batteries, to balance the input current of each FB to maintain well balanced the charging or discharging of the batteries. Furthermore, it is possible to balance the State Of Charge (SOC) of the batteries.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, with this reconfiguration capability, a cell can be inserted during operation to increase the power capability or leads to improve the global efficiency of the system. In [3,8,11] the proposed controllers allow insertion and removal cells during operation and present interesting results.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the control method to keep stable the system can be very complex in some cases. In [3,8,11] the theory indicates that these controllers can be implemented in a large number of cells.…”

Section: Introductionmentioning

confidence: 99%

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Estrategias descentralizadas y adaptativas para la eliminación selectiva de armónicos en el control de convertidores multinivel

Pino¹

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Este trabajo consta de dos secciones relevantes. La primera sección propone un control descentralizado para los convertidores multi-nivel. Para el diseño del mismo se plantea un modelo generalizado de los convertidores multi-celulares, basándose en los modelos de los convertidores de capacitores flotantes, convertidor multi-nivel de puentes H en cascada y convertidor de multi-phase Buck. Con ese modelo generalizado se plantea el control que consta de 3 partes: Un sistema de derivación, un control de balance de las celdas de los convertidores y un regulador de la variable de salida. El trabajo presenta resultados de simulación y experimentación con los convertidores de capacitores flotantes y de puentes H en cascada, perturbando el voltaje de entrada, insertando una celda y perturbando la resistencia de carga, obteniéndose resultados favorables y en concordancia entre la teoría, la simulación y la experimentación. La segunda parte de la tesis consiste en un controlador para un inversor multi-nivel simétrico de puentes H en cascada de 9 niveles con la modulación de Eliminación Selectiva de Armónicos. Este controlador regula la componente fundamental y elimina las armónicas 3,5 y 7 cuando existen perturbaciones en las fuentes de entrada o cambios en la resistencia de carga. Este controlador es validado tanto en simulación como en experimentación con dos tests, insertando una carga de 200 W y cambiando una fuente de entrada. obteniéndose resultados favorables y en concordancia entre simulación y experimentación. Finalmente, conclusiones y trabajos futuros son detallados.

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Section: Control Techniques For Multilevel Convertersmentioning

confidence: 99%

Section: Control Techniques For Multilevel Convertersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Estrategias descentralizadas y adaptativas para la eliminación selectiva de armónicos en el control de convertidores multinivel

Pino¹

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Decentralized Control for the Cell Power Balancing of a Cascaded Full-Bridge Multilevel Converter

Vivert¹,

Díez²,

Cousineau³

et al. 2023

Preprint

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In modern inverter applications, multilevel converters are used thanks to their capability of reducing the passive fi lter volumes, improving the overall THD, sharing the power sources across the several converter cells, and providing a reconfi guration ability in case of failure. However, increasing the number of cells makes more complex the control of the converter. This article proposes a decentralized control technique based on the use of elementary modular controllers, associated with each converter cell and communicating with their close neighbors to obtain the balancing of the powers they supplied. Each modular controller can be dynamically removed or added to allow reconfi guration of the converter for functional safety purpose. This method is applied to a 240V/3A 5-cells Cascaded Full-Bridge Multilevel Converter. The response of the system to load transients and cell voltage disturbances demonstrates the robustness of the proposed decentralized control method. Thanks to the use of modular controllers, the number of levels of the converter can be extended to the order N without adding complexity to its control.

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Decentralized Control for the Cell Power Balancing of a Cascaded Full-Bridge Multilevel Converter

et al. 2023

Self Cite

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This article presents a decentralized control technique applied to a Cascaded Full-Bridge Multilevel Converter (CFBMC) to balance the amount of power provided by its independent cells connected in series. It is based on the use of elementary modular controllers, associated with each converter cell, communicating with their close neighbors to obtain the appropriate power balancing. A complete theoretical study of the system is provided in terms of modal responses, feedback loop bandwidth and stability criteria and the design method of the correctors is explained as well. Each modular controller can be dynamically removed or added to allow reconfiguration of the number of converter cells during operation for functional safety purposes. This method is illustrated with a five-cell CFBMC, studied both with simulations and experimental tests. The response of the system to load transients and cell voltage disturbances demonstrates the robustness of the proposed control method. Thanks to its modularity, the number of voltage levels of the converter can be easily increased by inserting new cells in series without adding complexity to the control part.

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Decentralized Controller for a Grid Tied Cascade Multilevel Inverter

Cited by 3 publications

References 8 publications

Estrategias descentralizadas y adaptativas para la eliminación selectiva de armónicos en el control de convertidores multinivel

Estrategias descentralizadas y adaptativas para la eliminación selectiva de armónicos en el control de convertidores multinivel

Decentralized Control for the Cell Power Balancing of a Cascaded Full-Bridge Multilevel Converter

Decentralized Control for the Cell Power Balancing of a Cascaded Full-Bridge Multilevel Converter

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