A study on charge patterns for uninterruptible power supply system with distributed generators

Murai, Hideyuki; Takeda, Takashi; Hirose, Keikichi; Okui, Y.; Iwase, Yoshinao; Yukita, Kazuto; Ichiyanagi, Katsuhiro

doi:10.1109/intlec.2009.5351776

Cited by 6 publications

(5 citation statements)

References 3 publications

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“…One notable pure DC µgrid example is at the Aichi Institute of Technology (AIT), in Toyota City, close to Nagoya [9]. And, a second center for DC research is at Osaka University.…”

Section: A DC µGrid Demonstrationmentioning

confidence: 99%

Building scale DC microgrids

Marnay

Lanzisera

Städler

et al. 2012

2012 IEEE Energytech

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Abstract-The structure of both electricity supply and demand is evolving rapidly. Dispersed building-scale generation is becoming an increasingly familiar generation source and electronics based loads are ubiquitous. Given this landscape, the historic advantages of AC electricity delivery, while still strong in the high voltage realm of meshed grids and medium voltage distribution, is seeming less attractive for emerging small-scale semiautonomous systems, generally known as microgrids (or µgrids). The dominance of small-scale photovoltaics or variable frequency sources in small systems, together with the likely emergence of fuel cells and required batteries suggest a DC bus. Similarly, building loads increasingly involve DC somewhere in their electricity supply path. Given these circumstances, DC µgrids potentially eliminate conversion losses with their associated heat management problems and costs, as well as providing high quality service to loads. This paper discusses these trends and other factors that are pushing our power system towards a more decentralized paradigm, and one more reliant on DC systems.

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“…One notable pure DC µgrid example is at the Aichi Institute of Technology (AIT), in Toyota City, close to Nagoya [9]. And, a second center for DC research is at Osaka University.…”

Section: A DC µGrid Demonstrationmentioning

confidence: 99%

Building scale DC microgrids

Marnay

Lanzisera

Städler

et al. 2012

2012 IEEE Energytech

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“…The parallel connection of an APU to the main AC bus is considered in [1] and the transient performance of a hybrid battery–fuel cell APU is considered in [26]. Charging pattern for a battery, connected to a PV sub‐system and a wind generator is described in [27]. In this system, the grid only charges the battery and supplies the load when the PV and wind generators are not able to provide enough energy.…”

Section: Introductionmentioning

confidence: 99%

“…In this system, the grid only charges the battery and supplies the load when the PV and wind generators are not able to provide enough energy. Unfortunately, renewable sources of the topology proposed in [27] are not able to transfer power to the main grid. A system with multiple sources has been considered in [28], in which overall system reliability has been analysed for different connection scenarios.…”

Section: Introductionmentioning

confidence: 99%

Power sharing strategy for multi‐source electrical auxiliary power unit with bi‐directional interaction capability

Tashakor

Arabsalmanabadi

Iraji

et al. 2020

IET Power Electronics

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This study presents a hierarchical control strategy for an auxiliary power unit (APU) for aircraft to coordinate multiple power sources and control developed power electronic interfaces. The study benefits from the presence of a hybrid energy system in paralleled structure to the main generator as the complementary system. The employed structure enhances power quality and improves the voltage profile of the high-voltage DC bus. Furthermore, the developed bi-directional topology provides the possibility of interaction with the grid. Considering the APU features in an aircraft, a hierarchical control strategy with different levels of control, timescale, dynamic response, and significance are developed. The developed controller consists of a power management algorithm in the higher level, and local voltage and current controllers in the lower one. The algorithm aims to maximise the PV subsystem utilisation, overcome voltage fluctuations, increase power density, reduce operation costs, and increase system availability while allowing further development to larger systems. Simulation and experimental results confirm the robustness of the algorithm. The result shows that the proposed power sharing strategy optimises the system utilisation while achieving a high-quality voltage profile under severe fluctuations. Moreover, the stress on the battery pack is reduced to improve the life cycle and reduce operation costs.

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“…Distributed power of user side is small distributed power in the vicinity of the user side, including photovoltaic, wind energy and other types of distributed generation [2] unit as well as distributed energy storage. Distributed generation equipment (DG) [1] provides clean energy to the grid, smoothes the load of grid during the peak load hours, and continues to supply the local load until the power grid restore.…”

Section: Introductionmentioning

confidence: 99%

Research on User-Side Distributed Power System Control Strategy

Pan

Tian

2014

AMR

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Distributed power system, especially the distributed power and micro-grid system in the mountain villages, islands and remote areas, has many advantages, which can be used as an effective supplement of grid to help solve the problem of electricity supply. The connected-grid inverter needs to be able to work in both grid mode and island operation mode in order to ensure the safety of the local critical load. The paper proposed the seamless switching control strategy for two modes of switching. The experimental results verify the property of the topology structure and control strategy.

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A study on charge patterns for uninterruptible power supply system with distributed generators

Cited by 6 publications

References 3 publications

Building scale DC microgrids

Building scale DC microgrids

Power sharing strategy for multi‐source electrical auxiliary power unit with bi‐directional interaction capability

Research on User-Side Distributed Power System Control Strategy

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