DC Voltage Control of the DC Micro-Grid for Super High Quality Electric Power Distribution

Miura, Yushi; Ise, Toshifumi; Uchida, Ryohei

doi:10.1541/ieejias.127.890

Cited by 31 publications

(12 citation statements)

References 3 publications

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“…There is a risk that (1) the single-phase inverter may not produce the desired output voltage and that (2) the voltage on the smoothing capacitor connected between ±170-V wires and neutral wires, or on other components, may exceed its rating. Thus, a voltage balancer was connected additionally to the DC distribution line in these experiments [5]. Fig.…”

Section: Methodsmentioning

confidence: 99%

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Fundamental characteristics of laboratory scale model DC microgrid to exchange electric power from distributed generators installed in residential houses

Hashimoto

Matsumura

Kurotani

et al. 2010

Electrical Engineering Japan

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SUMMARYThe DC microgrid is a novel power system using DC distribution in order to provide superhigh-quality power. This DC system is suitable for DC-output distributed generation and energy storage. In this research, we assumed one type of DC microgrid for residential houses (apartment house or housing complex). Each residence has a distributed generation facility such as a gas engine or fuel cell. These cogeneration facilities are connected to the DC power line, and the electricity from the cogeneration facilities can be shared among the residences. The hot water from the cogeneration facility is used in each residence. We constructed an experimental system based on this concept in our laboratory. We have studied the fundamental characteristics and the quality of the power supplied to the loads against several fluctuations or faults. The experimental results demonstrated that the system could supply highquality power to the loads despite sudden load variations and voltage sags of the utility grid. Afterwards, we moved the experimental system to an experimental apartment house (NEXT21). We studied the quality of power supply by using practical power lines, and confirmed that the system was also able to supply power to home appliances stably.

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Section: Methodsmentioning

confidence: 99%

“…The authors previously proposed microgrids that provide superhigh-quality power supply using DC distribution [4,5]. In the present study, we consider a particular case of applying that method to residential complexes with distributed generators installed in every house.…”

Section: Introductionmentioning

confidence: 99%

Fundamental characteristics of laboratory scale model DC microgrid to exchange electric power from distributed generators installed in residential houses

Hashimoto

Matsumura

Kurotani

et al. 2010

Electrical Engineering Japan

Self Cite

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“…LPF is neglected due to few losses in (3). DC bus voltage V dc is regulated by the P control in (4).…”

Section: B Control Of Power Leveling and Invertermentioning

confidence: 99%

Deadbeat control of power leveling unit with bidirectional buck/boost DC/DC converter

Hamasaki

Mukai

Yano

et al. 2014

2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA)

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Abstract-As a distributed generation system increases, a stable power supply becomes difficult. Thus control of power leveling (PL) unit is required to maintain the balance of power flow for irregular power generation. The unit is required to respond to change of voltage and bidirectional power flow. So the bidirectional buck/boost DC/DC converter is applied for the control of PL unit in this research. The PL unit with Electric double-layer capacitor (EDLC) is able to absorb change of power, and it is examined whether the stable power supply is possible. The output current of PL unit is controlled so as to keep power balance and DC bus voltage. The effectiveness of the deadbeat control for power leveling unit is proved in simulation and experiment.

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“…Compared with AC distribution systems, DC distribution systems can easily integrate the renewable energy sources with improvements in dynamic performance, complication of control design, power quality, losses of transmission, and the cost of distribution network [2][3][4][5][6]. With the rapid development of power electronics devices, the distribution network introduces a lot of real-time automatic "controllable" features in different domains, such as the operational modes of power converters, the parameters of the digital controllers and the directions of power flow.…”

Section: Introductionmentioning

confidence: 99%

An Improved Control and Energy Management Strategy of Three-Level NPC Converter Based DC Distribution Network

Wang

Ma³

et al. 2017

Energies

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Abstract:To meet the challenge of large-scale renewable energy penetration and take full advantage of existing AC infrastructure, the bipolar DC distribution system is of interest. In this article, the system structure and characteristics of the bipolar DC distribution network are proposed. The three-level Neural Point Clamped Converter (NPC) is used in the proposed system to construct the bipolar DC system. To optimize the DC system performance, an improved cooperative control and energy management strategy is proposed mainly to mitigate DC voltage fluctuation and balance the positive and negative phase voltage. The improved strategy consists of (1) 2-degree of freedom (2DOF) PID controller in traditional voltage control loop; (2) cooperative controller to take full advantage of storage system; (3) voltage equalization controller to balance two-phase voltages; and (4) the energy management system to dispatch the response job to batteries and supercapacitors. Experiments and simulations are performed to validate the effectiveness of the proposed strategy.

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DC Voltage Control of the DC Micro-Grid for Super High Quality Electric Power Distribution

Cited by 31 publications

References 3 publications

Fundamental characteristics of laboratory scale model DC microgrid to exchange electric power from distributed generators installed in residential houses

Fundamental characteristics of laboratory scale model DC microgrid to exchange electric power from distributed generators installed in residential houses

Deadbeat control of power leveling unit with bidirectional buck/boost DC/DC converter

An Improved Control and Energy Management Strategy of Three-Level NPC Converter Based DC Distribution Network

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