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Pulsed power network based on decentralized intelligence for reliable and lowloss electrical power distribution

Sugiyama H.

Journal of Artificial Intelligence and Soft Computing Research

2015

Vol. 5, No. 2

97--108

Pulsed power network is proposed for reliable and low loss electrical power distribution among various type of power sources and consumers. The proposed scheme is a derivative of power packet network so far investigated that has affinity with dispersion type power sources and has manageability of energy coloring in the process of power distribution. In addition to these advantages, the proposed scheme has system reliability and low loss property because of its intelligent operation performed by individual nodes and direct relaying by power routers. In the proposed scheme, power transmission is decomposed into a series of electrical pulses placed at specified power slots in continuous time frames that are synchronized over the network. The power slots are pre-reserved based on information exchanges among neighboring nodes following inherent algorithm of the proposed scheme. Because of this power slots reservation based on decentralized intelligence, power pulses are directly transmitted from various power sources to consumers with the least power dissipation even though a partial failure occurs in the network. The network operations with the proposed scheme is simulated to confirm the algorithms for the power slots reservation and to evaluate the power network capacity.

Influence of Blend Fuels on Combustion Characteristics for Small Diesel Engine

Sugiyama H., Kawakami T., Teodorczyk A.

Archivum Combustionis

2008

Vol. 28 nr 3-4

206-214

As a possible solution for the run out of fossil fuel resources and the climate warming caused by the CO2 emission, the fuel with the content of vegetable oil has been used in our studies as an alternative fuel for light oil. However, operating the diesel engine with vegetable oils, results in increased NOx emissions as compared with the case of light oil. So, this study has been carried out to examine the influence of composition of blend of fuels on combustion characteristics and exhaust emissions in small diesel engine. The blends of light diesel oil and coconut oil with water were used. The range of blend ratio of coconut oil in light diesel oil was 0 to 20 vol %. The content of water in fuel was 0 to 20 by mass %. The maximum burning pressure and total burning time were observed by measuring the pressure with piezoelectric Kistler pressure transducer. The main conclusions are as follows: 1) The maximum burning pressure for water emulsion oil is smaller than that of light oil. 2) NOx emission of light fuel with coconut oil is higher than that of light oil.3) It is possible to improve the combustion behavior by using blend fuels for small diesel engines.