A Hybrid Smart AC/DC Power System

Kurohane, Kyohei; Senjyu, Tomonobu; Yona, Atsushi; Urasaki, Naomitsu; Goya, Tomonori; Funabashi, Toshihisa

doi:10.1109/tsg.2010.2053392

Cited by 185 publications

(77 citation statements)

References 20 publications

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“…The rapid increase in the demand for clean energy sources has given rise to the idea of connecting PV generation sources to utility grids [1]. Worldwide PV installation exceeded 100 GW in 2012 and has a potential to increase 2.5-fold within the next five years [2].…”

Section: Introductionmentioning

confidence: 99%

FPGA-based Centralized Controller for Multiple PV Generators Tied to the DC Bus

Ahmed¹,

Ganeshkumar²,

Park³

et al. 2014

Journal of Power Electronics

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The integration of photovoltaic (PV) energy sources into DC grid has gained considerable attention because of its enhanced conversion efficiency with reduced number of power conversion stages. During the integration process, a local control unit is normally included with every power conversion stage of the PV source to accomplish the process of maximum power point tracking. A centralized monitoring and supervisory control unit is required for monitoring, power management, and protection of the entire system. Therefore, we propose a field-programmable gate array (FPGA) based centralized control unit that integrates all local controllers with the centralized monitoring unit. The main focus of this study is on the process of integrating many local control units into a single central unit. In this paper, we present design and optimization procedures for the hardware implementation of FPGA architecture. Furthermore, we propose a transient analysis and control design methodology with consideration of the nonlinear characteristics of the PV source. Hardware experiment results verify the efficiency of the central control unit and controller design.

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Section: Introductionmentioning

confidence: 99%

FPGA-based Centralized Controller for Multiple PV Generators Tied to the DC Bus

Ahmed¹,

Ganeshkumar²,

Park³

et al. 2014

Journal of Power Electronics

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“…With lower power ratings, these converters can be assembled employing devices with reduced losses, besides enabling the modularity of installations. In this kind of application, the droop method is one of the control strategies that is most employed, mainly in microgrids, since it is easy adapt for converters with different power ratings [3], [4]. However, the objective of this method is just to share the processed power in a balanced way.…”

Section: Introductionmentioning

confidence: 99%

A simple control strategy to increase the total efficiency of multi-converter systems

Dupont

Zaragoza

Rech

et al. 2013

2013 Brazilian Power Electronics Conference

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Abstract-This paper presents a simple control strategy that is employed together with an optimization methodology to achieve optimal efficiency in systems composed by multiple parallel converters. An external loop is responsible for regulating the dc bus voltage and providing a current reference that is weighted in function of the power processed by the system, and then generating optimal current references for each converter. This enable the system to operate with optimal efficiency for all its load range. Experimental results demonstrate the superior performance of the proposed strategy, improving the efficiency of the system in almost 10 % under light load operation in comparison with the conventional strategy of equal power sharing among converters.

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“…At present, only AC smart grids are used in practical applications, whereby the DCSG (DC smart grid) has been proposed by the authors [5][6][7][8]. In Refs.…”

mentioning

confidence: 99%

“…In Refs. [5,6], the authors have proposed the operation of a DC MSG (DC micro smart grid) and the multi DC smart grid in isolated mode. However, there was no discussion on how the DC MSG will operate in insolation mode, especially if there is less power generation in comparison to load demand.…”

mentioning

confidence: 99%

Fuzzy Logic Controlled Dual Active Bridge Series Resonant Converter for DC Smart Grid Application

Nassor¹,

Yona²,

Senjyu³

2015

JEPE

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Abstract:Over the last few years, smart grids have become a topic of intensive research, development and deployment across the world. This is due to the fact that, through the smart grid, stable and reliable power systems can be achieved. This paper presents a fuzzy logic control for dual active bridge series resonant converters for DC smart grid application. The DC smart grid consists of wind turbine and photovoltaic generators, controllable and DC loads, and power converters. The proposed control method has been applied to the controllable load's and the grid side's dual active bridge series resonant converters for attaining control of the power system. It has been used for management of controllable load's state of charge, DC feeder's voltage stability during the loads and power variations from wind energy and photovoltaic generation and power flow management between the grid side and the DC smart grid. The effectiveness of the proposed DC smart grid operation has been verified by simulation results obtained by using MATLAB ® and PLECS ® cards.

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A Hybrid Smart AC/DC Power System

Cited by 185 publications

References 20 publications

FPGA-based Centralized Controller for Multiple PV Generators Tied to the DC Bus

FPGA-based Centralized Controller for Multiple PV Generators Tied to the DC Bus

A simple control strategy to increase the total efficiency of multi-converter systems

Fuzzy Logic Controlled Dual Active Bridge Series Resonant Converter for DC Smart Grid Application

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