Aspects of the integration of alternative sources of energy for application in distributed generation systems

Correa, J.M.; Farret, Felix A.; Simões, Marcelo Godoy; Ramos, Diego Berlezi; Ferrigolo, Fredi Zancan

doi:10.1109/cobep.2011.6085265

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…Furthermore, DC has lower distribution losses, lower cost of conductors for the same power, and does not use bulky transformers leading to cost and volume reduction [7,17,22]. In addition to that, a DC nanogrid should employ a DC-AC converter to serve as the interface to a conventional AC distribution feeder/neighborhood.…”

Section: Introductionmentioning

confidence: 99%

A Droop-Controlled Interlink Converter for a Dual DC Bus Nanogrid with Decentralized Control

2023

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This paper proposed a dual DC bus nanogrid with 380 V and 48 V buses and allows the integration of distributed energy resources on two buses. The proposed system employs an interlink converter to enable power sharing between the buses. The integration of distributed energy resources has been found to enhance the reliability of the low-voltage bus in comparison to those that lack such integration. The integration process requires the introduction of a new V-I curve for the interlink converter within a DC nanogrid controlled by DC bus signaling and droop control. Furthermore, selecting a power electronics converter for the interlink converter is essential. This paper employs a dual active bridge with galvanic isolation as an interlink converter and proposes a control strategy for the converter that relies on DC bus signaling and droop control. Moreover, this control methodology serves the purpose of preventing any detrimental impact of the interlink converter on the DC buses through the reprogramming of the V-I curve. Subsequently, the suggested control methodology underwent simulation testing via MATLAB/Simulink, which included two different test categories. Initially, the DAB was evaluated as an interlink converter, followed by a comprehensive assessment of the interlink converter in a complete dual DC bus nanogrid. The results indicate that the DAB has the potential to function as an interlink converter while the suggested control approach effectively manages the power sharing between the two buses.

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Section: Introductionmentioning

confidence: 99%

A Droop-Controlled Interlink Converter for a Dual DC Bus Nanogrid with Decentralized Control

2023

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“…While current power grid is AC some experts claim that the future power grid will be DC or high frequency AC [4]. Nevertheless to begin the implementation of smart grids now it is necessary to connect household power sources to an AC grid.…”

Section: Introductionmentioning

confidence: 99%

Low-Cost Voltage Zero-Crossing Detector for AC-Grid Applications

Vorobyov

Vitols

2014

Electrical, Control and Communication Engineering

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-Renewable energy sources and energy storage devices are becoming more popular. Some of them like small hydropower turbines, wind turbines and diesel generators produce AC voltage with different frequency and voltage than the main grid. For them power electronics converters are necessary. Power electronics converters presented in industry use two or three level energy conversion, although direct AC to AC converters exist, but one of the main problems is the switch commutation when current or voltage is crossing the zero point. Zero crossing sensors are used to solve this problem. They consist of current or voltage measurement unit and zero crossing detector. Different approaches are used for zero crossing: hardware or software. Hardware approach is simple but it has low precision. Software approach has high precision but it is complicated and expensive. In this paper a simple low cost high precision approach is presented. It takes all advantages from both approaches. While tested with two types of microcontrollers the precision of experimental measurement is 25 µs -40 µs.

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Modeling Alternative Sources of Energy

Simes¹,

Farret

2016

Modeling Power Electronics and Interfacing Energy Conversion Systems

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Aspects of the integration of alternative sources of energy for application in distributed generation systems

Cited by 4 publications

References 4 publications

A Droop-Controlled Interlink Converter for a Dual DC Bus Nanogrid with Decentralized Control

A Droop-Controlled Interlink Converter for a Dual DC Bus Nanogrid with Decentralized Control

Low-Cost Voltage Zero-Crossing Detector for AC-Grid Applications

Modeling Alternative Sources of Energy

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