Intelligent power management strategy of hybrid distributed generation system

Hajizadeh, Amin; Golkar, Masoud Aliakbar

doi:10.1016/j.ijepes.2007.06.025

Cited by 201 publications

(90 citation statements)

References 15 publications

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“…(PAC−0.8PAC,max)+(0.8PDC,max−PDC) (10) According to Equation (10), if the AC-side is capable of providing the active power demand fully and has a great surplus, then the DC-side transmission coefficient λ DC is given by:…”

Section: Proposed Power Control Strategy For the Interlinking Convertermentioning

confidence: 99%

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A Coordinated Control for Photovoltaic Generators and Energy Storages in Low-Voltage AC/DC Hybrid Microgrids under Islanded Mode

et al. 2016

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Abstract:The increasing penetration of renewable generators can be a significant challenge due to the fluctuation of their power generation. Energy storage (ES) units are one solution to improve power supply quality and guarantee system stability. In this paper, a hybrid microgrid is built based on photovoltaic (PV) generator and ES; and coordinated control is proposed and developed to achieve power management in a decentralized manner. This control scheme contains three different droop strategies according to characteristics of PV and ES. First, the modified droop control is proposed for PV, which can take full utilization of renewable energy and avoid regulating output active power frequently. Second, to maintain the direct current (DC) bus voltage stability, a novel droop control incorporating a constant power band is presented for DC-side ES. Third, a cascade droop control is designed for alternating current (AC)-side ES. Thus, the ES lifetime is prolonged. Moreover, interlinking converters (ICs) provide a bridge between AC/DC buses in a hybrid microgrid. The power control of IC is enabled when the AC-or DC-side suffer from active power demand shortage. In particular, if the AC microgrid does not satisfy the reactive power demand, IC then acts as a static synchronous compensator (STATCOM). The effectiveness of the proposed strategies is verified by simulations.

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Section: Proposed Power Control Strategy For the Interlinking Convertermentioning

confidence: 99%

“…Resulting from these features, a microgrid could play a critical role in maintaining the stability of the electrical networks [7][8][9]. Among various DGs, photovoltaic (PV) generator has emerged as major DG source in power grids [10].…”

Section: Introductionmentioning

confidence: 99%

A Coordinated Control for Photovoltaic Generators and Energy Storages in Low-Voltage AC/DC Hybrid Microgrids under Islanded Mode

et al. 2016

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“…As shown in the figure, it consists of a fuel cell, a super capacitor, DC to DC power converters, a 3-phase DC to AC inverter and an output filter. The mathematical models describing the dynamic behaviour of each of these components are given in [1,9].…”

Section: System Descriptionmentioning

confidence: 99%

“…3 shows the DC/DC converter model. This boost converter is described by the following two non-linear state space averaged equations [1,9]:…”

Section: Control Strategy Of Boost Dc-dc Convertermentioning

confidence: 99%

“…Although the batteries are considered to be the main energy storage device for DG application, their cycle and calendar life should still be improved. In most of today's DG applications, batteries are placed as an assistant power source [9] to deliver the power for long time. For these reasons, the use of the supercapacitor as an auxiliary source is expected that the very fast power response and high specific power can complement the slower power output of the main source (particularly the FC generator).…”

Section: Introductionmentioning

confidence: 99%

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Robust power control of hybrid distributed power generation system during voltage sag

Hajizadeh¹,

Norum²,

Golkar³

2009

2009 35th Annual Conference of IEEE Industrial Electronics

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Abstract-This paper concentrates on the control of hybrid fuel cell/energy storage distributed generation systems under voltage sag in distribution systems. The proposed control strategy makes hybrid distributed generation system works properly when a voltage disturbance occurs in distribution system and it stays connected to the main grid. To distribute the power between dc power sources and stabilize the dc-link power, a lyapanov based neuro-fuzzy control strategy has been developed. Then, a fuzzy sliding-mode control strategy is presented for designing the controllers DC/DC and DC/AC converters. Simulation results are given to show the overall system performance including active power control and voltage sag ride-through capability of the hybrid distributed generation system.

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Power conversion in a grid‐connected residential PV system with energy storage using fuzzy‐logic controls

Ademulegun

Jaramillo

2020

Int Trans Electr Energ Syst

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Increasing implementations of renewable energy resources to migrate from fossil fuel based electric power to clean energies have been creating new technical challenges due to their integration into an existing electrical grid. In this research, a power electronic converter based on fuzzy-logic controller is developed to govern the transfer and control of power in a grid-connected residential photovoltaic (PV) system with battery storage. A bidirectional dc-dc converter is designed for power transfer between the loads and the battery. A bidirectional ac-dc converter is used as the interface between the PV array and the electricity grid. The fuzzy-logic controller is designed to meet the user power requirement-with the PV array and the battery sized to meet the critical load requirement on site. The results indicate that the fuzzy-logicbased power conversion helped the system to adjust to off-grid, low-battery, full-battery, and on-grid power conditions. The main merit of the design is simplicity in being able to manage the limited supplies from the grid and the renewable PV installation using carefully sized storage that serves critical loads within specific days of power autonomy.

show abstract

Intelligent power management strategy of hybrid distributed generation system

Cited by 201 publications

References 15 publications

A Coordinated Control for Photovoltaic Generators and Energy Storages in Low-Voltage AC/DC Hybrid Microgrids under Islanded Mode

A Coordinated Control for Photovoltaic Generators and Energy Storages in Low-Voltage AC/DC Hybrid Microgrids under Islanded Mode

Robust power control of hybrid distributed power generation system during voltage sag

Power conversion in a grid‐connected residential PV system with energy storage using fuzzy‐logic controls

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