Roadmap for implementation of DC system in future houses

Techakittiroj, Kittiphan; Patumtaewapibal, S.; Wongpaibool, Virach; Threevithayanon, Wutthikorn

doi:10.1109/ichqp.2008.4668827

Cited by 9 publications

(7 citation statements)

References 9 publications

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“…For the purpose of balancing the battery SOCs without the use of communications, the P -f curve must be changed as a function of each battery's SOC. From (19), two parameters can be used for this purpose, namely f0 and MP. The slope changing method, described in [33], proposes modifying the Pf curve slope MP.…”

Section: Descriptionmentioning

confidence: 99%

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State-of-charge-based droop control for stand-alone AC supply systems with distributed energy storage

Urtasun

Sanchis

Marroyo

2015

Energy Conversion and Management

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The droop method is an advantageous technique for stand-alone AC supply systems, allowing for power sharing among various inverters with no need for communication cables. However, in stand-alone systems with multiple distributed energy storage units, the conventional droop methods are unable to control the storage unit state-of-charge (SOC) in order to change simultaneously. Existing techniques endeavor to solve this problem by changing the slope of the P-f curve however this solution compromises the power response performance. As an alternative, this paper proposes a new SOC-based droop control, whereby the P-f curve is shifted either upwards or downwards according to the battery SOC. The proposed technique makes it possible to select the time constant for the battery SOC convergence and, at the same time, to optimize the power response performance. The paper also shows how the SOC changes when the ratios between the battery capacity and the inverter rated power are different and how the proposed technique can limit the SOC imbalance. Simulation and experimental results corroborate the theoretical analysis.

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Section: Descriptionmentioning

confidence: 99%

“…On one hand, there is a central control or master-slave approach where a supervisor sets in real time the operation point of each element [18]. The drawback of this approach is that requires a fast communication system between master and microgrid elements [19], [20]. Distributed control is another possible technique.…”

Section: Introductionmentioning

confidence: 99%

State-of-charge-based droop control for stand-alone AC supply systems with distributed energy storage

Urtasun

Sanchis

Marroyo

2015

Energy Conversion and Management

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“…The appliances will not be modified. According to [6], the DC voltage level at 140 V to 220 V would allow most worldwide voltage appliances to normally operate without any modification.…”

Section: Introductionmentioning

confidence: 99%

Co-existance between AC-Distribution and DC-Distribution: In the View of Appliances

Techakittiroj

Wongpaibool

2009

2009 Second International Conference on Computer and Electrical Engineering

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This work demonstrates the possibility of using the available-in-market appliances in a DC-distribution system. This demonstration also represents an alternative migration from AC-distribution to DC-distribution. DC-distribution has been shown to be more efficient and provided good power quality in a distribution system. The power supply technology in the modern appliances makes the possibility of an appliance to be used in either both AC-distribution and DC-distribution without any modification. Appliances are tested by using an AC-source as the base-line and then the test replaces the ACsource by a DC-source.

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“…If there is enough energy on the DC bus then the battery will sink energy, and charge itself, and if there is a lack of energy on the bus, then the battery will supply energy to the bus. This is all automatically controlled by the physics behind energy flow, and will require no automation [13].…”

Section: Why Dc?mentioning

confidence: 99%

Smart Wall Outlet Design and Implementation for the Dc House Project

Mendoza¹

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Smart Wall Outlet Design and Implementation for the DC House ProjectKevin Roy Mendoza Most everyday AC appliances are designed to operate off of 120V coming from the wall outlet in our homes. This voltage is a standard set from our established infrastructure. Unlike AC devices, DC devices do not have any set standard of voltage they all will run off of. This presents a problem for the DC house as the various loads that will be used will have different required input voltages. One set voltage for a wall outlet will not suffice for the DC House. This Smart Wall Outlet is designed with a DC-DC converter that will have its output voltage controlled by an on-board microprocessor.The Smart Wall Outlet detects current going into a device, and will adjust the voltage applied to the device to ensure it operates most efficiently. Proof of concept research has already been performed in the past, and this thesis will look towards implementing this concept on a single circuit board.v ACKNOWLEDGMENTS

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Roadmap for implementation of DC system in future houses

Cited by 9 publications

References 9 publications

State-of-charge-based droop control for stand-alone AC supply systems with distributed energy storage

State-of-charge-based droop control for stand-alone AC supply systems with distributed energy storage

Co-existance between AC-Distribution and DC-Distribution: In the View of Appliances

Smart Wall Outlet Design and Implementation for the Dc House Project

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