Energy management of DC microgrid based on photovoltaic combined with diesel generator and supercapacitor

Yin, Changjie; Wu, Hongwei; Locment, Fabrice; Sechilariu, Manuela

doi:10.1016/j.enconman.2016.11.018

Cited by 145 publications

(60 citation statements)

References 34 publications

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“…Sci. 2020, 10, 2544 6 of 21 SC has been suggested to compensate for the power balance because of its fast response and high-power density [19,20]. In addition, it is assumed that the DG works at duty cycle mode as in [21], where the duty cycle mode is proved to be better than a load-following mode, and one-hour is proposed as a good trade-off between fuel consumption and start-up frequency.…”

Section: Diesel Generator and Supercapacitormentioning

confidence: 99%

DC Microgrid System Modeling and Simulation Based on a Specific Algorithm for Grid-Connected and Islanded Modes with Real-Time Demand-Side Management Optimization

2020

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This paper presents an algorithm considering both power control and power management for a full direct current (DC) microgrid, which combines grid-connected and islanded operational modes, with real-time demand-side management optimization. The full microgrid is a hybrid dynamic system model consisting of two interacting parts: continuous-time dynamics and discrete-event dynamics. Such a full microgrid consists of photovoltaic sources, a DC load, battery storage systems, supercapacitor storage, a diesel generator, and a public grid connection, all connected on a DC common bus. This full microgrid is more reliable than a microgrid with only renewable sources or with only traditional energy sources, considering the power constraints imposed by the public grid as well as the sluggish dynamic of the diesel generator, self-discharging characteristic of the supercapacitor, and load shedding optimization. Meanwhile, this algorithm can automatically switch between grid-connected and islanded operational modes to optimize the power of the load shedding, take advantage of renewable energy, and keep the power balance in the full DC microgrid. The results under MATLAB/Simulink verify that the real-time control algorithm can maintain the power balance in real-time for the whole day and satisfy the power management strategy.

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Section: Diesel Generator and Supercapacitormentioning

confidence: 99%

DC Microgrid System Modeling and Simulation Based on a Specific Algorithm for Grid-Connected and Islanded Modes with Real-Time Demand-Side Management Optimization

2020

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“…In Reference [4] is shown a DAB working in harsh environments with high temperature as a component of an electric actuator; Reference [5] shows a DAB as an interface between the battery storage system and DC bus. Additionally, for electric ships [6,7] and smart grids [8][9][10], DAB converters can be seen as an interface component in the medium-voltage grid. DAB converters are also an alternative for electrochemical energy storage as shown in References [11,12].…”

Section: Introductionmentioning

confidence: 99%

General Analysis of Switching Modes in a Dual Active Bridge with Triple Phase Shift Modulation

et al. 2018

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This paper provides an exhaustive analysis of the Dual-Active-Bridge with Triple-Phase-Shift (DAB-TPS) modulation and other simpler ones, identifying all the possible switching modes to operate the DAB in both power flow directions, and for any input-to-output voltage range and output power. This study shows four cases and seven switching modes for each case when the energy flows in one direction. That means that the DAB operates up to fifty-six different switching modes when the energy flows in both directions. Analytical expressions for the inductor current, the output power, and the boundaries between switching modes are provided for all cases. Additionally, the combination of control variables to achieve Zero-Voltage-Switching (ZVS) or Zero-Current-Switching (ZCS) is provided for each case and switching mode, by showing which switching modes obtain ZVS or ZCS for the whole power range and all switches-independent of the input-to-output voltage ratio. Therefore, the most interesting cases, switching mode and modulation for using the DAB are identified. Additionally, experimental validation has been carried out with a 250 W prototype. This analysis is a proper tool to design the DAB in the optimum switching mode, reducing the RMS current and achieving to increase efficiency and the power density.

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“…This extra flexibility may be significantly enhanced by the exploitation of energy and heat storage systems. These systems can be used to detach generation and demand peaks, as well as to deal with the variable availability of renewable sources (Wang et al, 2016;Yin et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

An MILP formulation for the optimal management of microgrids with task interruptions

Silvente

Papageorgiou

2017

Applied Energy

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This work is focused on the optimal management of electricity and heat generation and demand in microgrids. The objective of the proposed mathematical model is to adjust energy and heat availability profiles resulting from the use of renewable energy sources and flexible energy and heat demands. The optimisation of the resulting short-term problem is addressed through a Mixed-Integer Linear Programming (MILP) mathematical model to minimise the operational cost of the microgrid. Delays in the energy demands are allowed to tackle flexible demand profiles, under penalties in the objective function. An additional characteristic was the consideration of non-constant profiles in the considered tasks. Also, this model takes into account eventual interruptions in the tasks, applying penalties in the economic objective function. The main decisions to be made includes the schedule of tasks, as well as energy and heat generation levels, purchases from and exportation to the power grid, and storage levels.

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Energy management of DC microgrid based on photovoltaic combined with diesel generator and supercapacitor

Cited by 145 publications

References 34 publications

DC Microgrid System Modeling and Simulation Based on a Specific Algorithm for Grid-Connected and Islanded Modes with Real-Time Demand-Side Management Optimization

DC Microgrid System Modeling and Simulation Based on a Specific Algorithm for Grid-Connected and Islanded Modes with Real-Time Demand-Side Management Optimization

General Analysis of Switching Modes in a Dual Active Bridge with Triple Phase Shift Modulation

An MILP formulation for the optimal management of microgrids with task interruptions

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