Design of BFA-optimized fuzzy electronic load controller for micro hydro power plants

Ofosu, Robert Agyare; Kaberere, Keren K.; Nderu, J. N.; Kamau, Stanley I.

doi:10.1016/j.esd.2019.04.003

Cited by 9 publications

(5 citation statements)

References 5 publications

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“…The authors of the papers [8,18,19] agree that, for a micro-hydro system supplying rural load for which cost-effectiveness is the major factor, ELC is the best way of regulating the frequency. ELC can be made using different methods, systems or approaches.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Symmetrically Switched Rectifier Topologies on the Frequency Regulation of Standalone Micro-Hydro Power Plants

et al. 2021

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Micro-hydro power plants (μHPPs) are a major energy source in grid-isolated zones because they do not require reservoirs and dams to be built. μHPPs operate in a standalone mode, but a continuously varying load generates voltage unbalances and frequency fluctuations which can cause long-term damage to plant components. One method of frequency regulation is the use of alternating current-alternating current (AC-AC) converters as an electronic load controller (ELC). The disadvantage of AC-AC converters is reactive power consumption with the associated decrease in both the power factor and the capacity of the alternator to deliver current. To avoid this disadvantage, we proposed two rectifier topologies combined with symmetrical switching. However, the performance of the frequency regulation loop with each topology remains unknown. Therefore, the objective of this work was to evaluate the performance of the frequency regulation loop when each topology, with a symmetrical switching form, was inserted. A MATLAB® model was implemented to simulate the frequency loop. The results from a μHPP case study in a small Cuban rural community called ‘Los Gallegos’ showed that the performance of the frequency regulation loop using the proposed topologies satisfied the standard frequency regulation and increased both the power factor and current delivery capabilities of the alternator.

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Section: Introductionmentioning

confidence: 99%

“…In [19], the design and implementation of an ELC is presented as an alternative to a speed governor required for regulating the frequency of supply under varying load conditions. This is the single most expensive component in a µHPP and most of the community owned plants in Africa can hardly afford it.…”

Section: Introductionmentioning

confidence: 99%

Effect of Symmetrically Switched Rectifier Topologies on the Frequency Regulation of Standalone Micro-Hydro Power Plants

et al. 2021

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“…The literature includes several papers treated low-cost prototypes using open-source technologies [13][14][15][16][17][18][19]. Fuentes et al [13] have proposed a portable data logger based on Arduino open-source for photovoltaic (PV) monitoring.…”

Section: Introductionmentioning

confidence: 99%

“…According to the paper [16], the authors have proposed an electrochemical impedance spectroscopy system based on Arduino device for in situ corrosion monitoring of metallic works of art. Osufu et al [17] have designed a loadfrequency controller (LFC) system for a micro hydro power plant based on Arduino technologies. However, the proposed system takes into consideration the frequency regulation only.…”

Section: Introductionmentioning

confidence: 99%

Design of a Low-Cost Autonomous Controller, Management and Security System for Pico-Hydroelectric Power Plants

Hamdaouy¹,

Salhi²,

Dahbi³

et al. 2020

JESA

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In this paper, a new controller, management and security system (CMSS) was proposed to ensure the overall operation of pico-hydroelectric power plants (PHPPs) at low-cost, especially in off-grid sites in remote areas. The proposed system can be used to meet the requirements of the PHPP such as the start-up, the departures' management, the loadfrequency controller (LFC), the emergency stop (ES), and the normal stop procedures in order to guarantee good quality and sustainable services. The system was tested under various conditions to prove its reliability using PHPP prototype. Based on the prototype, the laboratory experimental results are presented. The design's details and the implementation of the system are given as well. The system is completely independent, and it achieved an initial cost of only 266 $. The flexibility makes the system more suitable for extended future improvement such as adding data-logger, adding communication aspects using wireless technologies, etc. Furthermore, the system could be easily adapted for different educational purposes, especially for universities with limited resources.

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“…But these controllers also insert switching harmonics in the system and become the reason of thermal stresses. Subsequently, a modified electronic load controller was proposed which reduced the inserted harmonics in the system, but this controller also wastes power as heat [15]. In some studies, a VFD was used to integrate a micro-hydro power plant and a motor.…”

Section: Introductionmentioning

confidence: 99%

A Novel Solution to Eliminate Frequency Intermittency by Adding Spinning Reserve to the Micro-Hydro Turbine Generator using Real-Time Control of Induction Motor through AC-DC-AC Power Converters

et al. 2020

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Small micro-hydro has a variable output in terms of frequency and voltage. Formerly Electronic Load Controller has been used to stabilize the output frequency of micro-hydro in which these ELCs wasted extra generated energy as heat. In this paper, a novel approach to handle these frequency variations by designing a Variable Frequency Drive (VFD) is proposed. Besides, the electronic governor of micro-hydro turbine generator is designed by incorporating a variable speed induction motor. Thus, the spinning reserve of the motor could be used for irrigation or water storage purposes by consuming extra generated power. Further, the DC bus of VFD enables the system to integrate with other Distributed Energy Sources (DES), which will be helpful in the future extension of the microgrid.

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Design of BFA-optimized fuzzy electronic load controller for micro hydro power plants

Cited by 9 publications

References 5 publications

Effect of Symmetrically Switched Rectifier Topologies on the Frequency Regulation of Standalone Micro-Hydro Power Plants

Effect of Symmetrically Switched Rectifier Topologies on the Frequency Regulation of Standalone Micro-Hydro Power Plants

Design of a Low-Cost Autonomous Controller, Management and Security System for Pico-Hydroelectric Power Plants

A Novel Solution to Eliminate Frequency Intermittency by Adding Spinning Reserve to the Micro-Hydro Turbine Generator using Real-Time Control of Induction Motor through AC-DC-AC Power Converters

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