Technology Spin-Off From Space Power Automation to Terrestrial Electrical Power Distribution Control and Operation

The success of a nanosatellite mission is depend on the reliability of the Electrical Power System (EPS) to ensure the subsystems on the nanosatellite working properly. Therefore, an effective power distribution control is required. This research will explain how to distribute electrical power effectively to the subsystems according to the condition of the nanosatellite (sunlight or eclipse). To illustrate this, a simulation and analysis of the EPS power management module design consisting the LT3757 boost converter and LT3652 battery charger were performed. From the simulation results, it will be seen that when the nanosatellite is exposed to the sun, the system will distribute the power to the load using the input power from the panel surya that has passed the boost converter component (12 Volt), while charging the battery until it’s fully charged (7,4 Volt). But during the eclipse phase the system will supply the load with the power generated by the battery (7,4 Volt)

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An advanced concept in electrical power distribution control and management

10.1109/ppesc.1972.7094902 ◽

1972 ◽

Author(s):

J. R. Courter ◽

T. R. Murrow

Keyword(s):

Power Distribution ◽

Electrical Power ◽

Control And Management ◽

Power Distribution Control

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Non-isolated load sharing direct current system operation with use of the auctioneering diodes

ITM Web of Conferences ◽

10.1051/itmconf/20192801037 ◽

2019 ◽

Vol 28 ◽

pp. 01037 ◽

Cited By ~ 1

Author(s):

Maciej Kozak

Keyword(s):

Power Distribution ◽

Distribution System ◽

Heat Dissipation ◽

Current System ◽

Electrical Power ◽

Experimental System ◽

Laboratory System ◽

Simulation Studies ◽

Power Distribution System ◽

Electrical Systems

The paper presents the background and results of numerical simulation and experimental research of a system using auctioneering diodes used to distribute the electrical power between two power converters connected with intermediate circuits in parallel, direct connection. Presented non-isolated power distribution system which utilizes blocking diodes placed in DC branches are used in the selected ship's electrical systems, however, they create problems related to control and handling ground faults. Another issue occurring during the operation of this type of systems is increased heat dissipation while diodes switching. Selected problems related to the operation of experimental system have been identified by means of simulation studies and experiments carried out in a 11 kVA laboratory system and the theoretical basis along with results are provided in the article.

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Investigation of the Impact of Large-Scale Integration of Electric Vehicles for a Swedish Distribution Network

Energies ◽

10.3390/en12244717 ◽

2019 ◽

Vol 12 (24) ◽

pp. 4717 ◽

Cited By ~ 1

Author(s):

Sylvester Johansson ◽

Jonas Persson ◽

Stavros Lazarou ◽

Andreas Theocharis

Keyword(s):

Electric Vehicles ◽

Power Distribution ◽

Large Scale ◽

Electrical Power ◽

Distribution Network ◽

Transport Sector ◽

Smart Charging ◽

Large Scale Integration ◽

Scale Integration ◽

The Impact

Social considerations for a sustainable future lead to market demands for electromobility. Hence, electrical power distribution operators are concerned about the real ongoing problem of the electrification of the transport sector. In this regard, the paper aims to investigate the large-scale integration of electric vehicles in a Swedish distribution network. To this end, the integration pattern is taken into consideration as appears in the literature for other countries and applies to the Swedish culture. Moreover, different charging power levels including smart charging techniques are examined for several percentages of electric vehicles penetration. Industrial simulation tools proven for their accuracy are used for the study. The results indicate that the grid can manage about 50% electric vehicles penetration at its current capacity. This percentage decreases when higher charging power levels apply, while the transformers appear overloaded in many cases. The investigation of alternatives to increase the grid’s capabilities reveal that smart techniques are comparable to the conventional re-dimension of the grid. At present, the increased integration of electric vehicles is manageable by implementing a combination of smart gird and upgrade investments in comparison to technically expensive alternatives based on grid digitalization and algorithms that need to be further confirmed for their reliability for power sharing and energy management.

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