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AREAS and ISLANDS of LIGHT – Infrastructure Development

Electricity: The 'return' of the DC (direct Current) – LVDC Miscellaneous


A 'war of voltages' is expected to burst out in the 'DC world'...
It might be even more 'everlasting' than the previous 'war of currents', and there is still an unpredictable result...

And, the more, it is already silently unfolding, thus not yet is it 'loudly' declared. And it might last as long,.. till the 'Ascension' process.

Even the 380V DC voltage has not won in this war. The 350V DC and the 400V DC are still walking around, maybe trying to 'depose' it... 

For now, the 'war of voltages' concerning LVDC distribution, (and above the 'established' values of 12, 24, 48V ELVDC), may unfold (and 'rage') including  LVDC voltages as might be 120, 125, 220, 240, 300, 350, 380, 400, and even 550V DC...

So, outside of this war can be considered the DC (extra low) voltages as are 12V, 24V, 48V DC. And,... in this range, as the case may be, have we to design our stand-alone DC (solar power or other kind of 'free energy') nano-grids. 

However, in this 'war of DC voltages' there are expected some 'happy ends' to occur, on some 'fronts' of interests...

Why seem this particular 'war' a non-destructive one, is that all the 'combatants' have the same interest: promoting a 'DC world' against the currently 'all seeing' AC of 50/60Hz  distribution.
This 'war of DC voltages' may lead in fact to a win-win solution on the  'DC side' of combatants,... and hopely to a 'win-lose' in the favor of DC against the highly disgusting AC of 50/60Hz.

And, as expected, a 'proxy' of this undeclared 'war of DC voltages' is also unfolding in the IEC, in order to set up the needed  LVDC standards, finally with a preferable 'win-win' resolution in the form of a broad range of standardized LVDC voltages.
https://www.iec.ch/lvdc/
Endless debates are conducted in the IEC Technical Committees. 
The SEG-4 was formed:
https://www.iec.ch/dyn/www/f?p=103:14:0::::FSP_ORG_ID,FSP_LANG_ID:11901,25"Systems Evaluation Group - Low Voltage Direct Current Applications, Distribution and Safety for use in Developed and Developing Economies".


Discussion to continue...



Useful Links:


LVDC: electricity for the 21st century
https://www.iec.ch/technologyreport/pdf/IEC_TR-LVDC.pdf


IEC approves Systems Committee for LVDC
https://iecetech.org/issue/2016-08/Standardization-can-help-millions-access-electricity


LVDC grid based on PV energy sources and multiple electrochemical storage technologies
https://hal.archives-ouvertes.fr/hal-01698934/document


Military DC-DC Power Converters
https://www.synqor.com/milcots-military-dc-dc-converters


INTRA-MODULE DC-DC CONVERTER: TOPOLOGY SELECTION AND ANALYSIS 
https://core.ac.uk/download/pdf/34580930.pdf


Nanogrids: The Ultimate Solution for Creating Energy-Aware Buildings? 
https://www.greentechmedia.com/articles/read/nanogrids-the-ultimate-solution-for-creating-energy-aware-buildings#gs.es0584


Local DC Power Based Electricity Infrastructure : Game Changer in  Global Power
https://www.emergealliance.org/portals/0/documents/events/Local%20DC%20Power%20Based%20Electricity%20Infrastructre%20-%20Singh%20et%20al.pdf


Is 2019 Finally the year to go Solar? Lessons learned after 8 years with Solar Panels
https://www.youtube.com/watch?v=LvoLyQfesL8


Wire Sizing Tool for 12, 24 and 48 Volt DC Systems
https://www.altestore.com/howto/wire-sizing-tool-for-12-24-and-48-volt-dc-systems-a106/


Open Nanogrid - Drafting an open standard for an extra low voltage DC electricity grid
https://meta.iilab.org/OpenNanogrid/ON-draft


Solaric Bangladesh Operation (Upazila wise) 
http://solar-ic.com/solaricdev/

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Residential DC Appliances

ISLANDS and AREAS of LIGHT - Infrastructure Development

Electricity - DC (direct current) Appliances


Solar Powered Motors
https://www.metmotors.com/solar-powered-motors/


Standard 1250 Watt 48V 3000RPM BLDC Motor DC Motors
https://www.industrybuying.com/dc-motors-standard-MOT.DCM.91906604/


DC REFRIGERATOR VS AC REFRIGERATOR IN OFF GRID APPLICATIONS
https://www.energymatters.com.au/energy-efficiency/dc-ac-refrigerators/


Our DC-Powered Solar Refrigerators Freezers
https://www.geinnovations.net/solarrefrigerator.html


Unique 16.6 cu/ft Solar Powered DC Fridge
http://uniqueoffgrid.com/product/solar-powered-dc-fridge/


24V DC Washing Machine
http://uniqueoffgrid.com/wp-content/uploads/Portable-On_OffGrid-Semi-Auto-DC-Washing-Machine-Owners-Manual.pdf


48V DC Air Conditioner
https://www.hotspotenergy.com/DC-air-conditioner/


Demonstration of the Unique UGP-72LD1 Solar 24v DC Washer Spinner Dryer for Off Grid and Tiny Home
https://www.youtube.com/watch?v=4bxdlM_lzWU


M4-ATX, 250w output, 6v to 30v wide input Intelligent Automotive DC-DC Car PC Power Supply 
http://www.mini-box.com/M4-ATX?sc=8&category=981


http://www.legelite.com/Warm-White-5W-DC12V-24V-G5-LED-T5-Tube-Light-Replace-12-F8T5-Fluorescent-Tubes-pd530608.html


http://www.legelite.com/Warm-White-5W-DC12V-24V-G5-LED-T5-Tube-Light-Replace-12-F8T5-Fluorescent-Tubes-pd530608.html


12V, 24V DC - Color filament LEDs for our outdoor
https://www.banggood.com/4-LED-Filament-1156-BAU15S-PY21W-LED-Turn-Signal-Light-Reverse-Backup-Lamp-Bulb-p-1351357.html?cur_warehouse=CN

Solaric Bangladesh Operation (Upazila wise) - Innovation in Appliances
http://solar-ic.com/solaricdev/sample-page/appliances/

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Outdoor fixtures blue prints for ELVDC are on our Blog
https://lightcommunitylighting.blogspot.com/p/blog-page_21.html
https://lightcommunitylighting.blogspot.com/p/outdoor-radial-waves-open-lighting.html

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The DC (direct current) 'nano-grid' – a more reliable solution for Areas and Islands of Light

The regular electrical grid is, as nowadays in AC (and using transformers), that one where you have power plants far from where the electricity is consumed, and by using transmission lines to carry the power over long distances.

But it might be also the case where you can also create smaller-sized grids where the generation and consumption of electricity is closer.

Despite, as usual, these smaller grids are also connected to the larger grid, and thus also can operate independently of the outside grid – not this is the case of interest for out Islands and Areas of Light.

What is used as a term as a 'nano-grid', is a grid that is generally small, in the size of a single building.

These small grids can be primarily DC only, and, the more that independent it is and the more the smaller it gets, the more properly it will be of 24/36/48V DC, - (ELVDC)

and also because of the renewable (or 'free') energy that is generated into that area.



…discussion to continue



Related links:

Simulation and Realization of DC Nano Grid
https://www.ijaiem.org/Volume6Issue7/IJAIEM-2017-07-07-17.pdf

Bus voltage level choice for standalone residential DC nanogrid
https://www.sciencedirect.com/science/article/pii/S2210670718312654



LAPP is a pioneer in the direct current revolution
t3.lappcdn.com/.../PR_LAPP_is_a_pioneer_in_the_direct_current_revolution.docx


The next energy revolution - direct current
https://www.pressebox.com/pressrelease/ui-lapp-gmbh-stuttgart/The-next-energy-revolution-direct-current/boxid/946750

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ISLANDS and AREAS of LIGHT - Infrastructure Development

Electricity - The 'return' of DC (direct current)



Voltage Standardization of DC Distribution System for Residential Buildings

https://www.researchgate.net/publication/280734930_Voltage_Standardization_of_DC_Distribution_System_for_Residential_Buildings

Voltage standardization of DC distribution system for residential buildings
https://dspace.lboro.ac.uk/dspace-jspui/bitstream/2134/19810/1/273-E12.pdf



Demand DC: Adoption Paths for DC Power Distribution in Homes
https://aceee.org/files/proceedings/2016/data/papers/1_156.pdf


An Overview of Low Voltage DC Distribution Systems for Residential Applications
https://vbn.aau.dk/ws/portalfiles/portal/219724154/2015_ICCE_An_Overwiew_of_LVDC_Distribution_systems_for_Residential_Applications.pdf



DC House - Realizing a cost-effective zero net energy building through direct current (DC) residential distribution 
https://www.ecmweb.com/contractor/dc-house



Experts agree on advantages of direct current power in buildings
https://physicsworld.com/a/experts-agree-on-advantages-of-direct-current-power-in-buildings/


48 V ELVDC Distribution System - Guidelines 
https://www.standardsbis.in/Gemini/search/Browse.action?saleModeName=SOFT_COPY&subDivisionId=404#

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"LA REVANCHE" - Rewinning  the War of Currents


The DC (direct current), a more reliable form of power distribution for 'buildings'.

The same: The DC, much more reliable for off-grid dwellings  generally, and for our Islands and Areas of Light particularly...


In nowadays terms, the rewinning of the war of currents means not necessarily Edison against Tesla, but rather, Edison and Tesla on one side, and... the disgusting 50/60HZ wired power grid system (with all which is behind it) on the other side.
https://en.wikipedia.org/wiki/War_of_the_currents
https://study.com/academy/lesson/thomas-edison-george-westinghouse.html

In the terms of these claims, the fight must rewin this war, for DC in favor of Edison, and for wireless transmission, high frequency, and free energy in favor of Tesla, on the same side of the battle.

A kind of particularity of this 'war' is in the sense that it may be won individually, against the system.

So, each off-grid home, which is (independently from the grid system) powered by only DC grid is a winner of this war, may its owners be or not awakened, or part of (what we call) the Light Community.



ISLANDS and AREAS of LIGHT - Infrastructure Development

Electricity - 'The return of DC'

Slow Electricity - The Return of DC Power? "This double energy conversion, which generates up to 30% of energy losses, can be eliminated if the building's electrical distribution is converted to DC. Directly coupling DC power sources with DC loads can result in a significantly cheaper and more sustainable solar system."
https://www.lowtechmagazine.com/2016/04/slow-electricity-the-return-of-low-voltage-dc-power.html


"With the gaining of popularity of concept of distribution generation (DG) and sustainable development, DG with renewable energy (RE) sources is one of the possible ways for building energy supply in the future. The current "DC-AC-DC" route from DG to DC loads via inverters may not be rational from the viewpoint of system simplicity and energy efficiency, a review on the current electrical distribution systems should be made. This paper reviews and evaluates possibilities of using DC electrical distribution systems with increasing RE resources and DC loads."
https://www.researchgate.net/publication/224694528_DC_Electrical_Distribution_Systems_in_Buildings


ELVDC

Useful links:

Slow Electricity: The Return of DC Power?
https://www.lowtechmagazine.com/2016/04/slow-electricity-the-return-of-low-voltage-dc-power.html

How Solar DC System Works with DC Lights, Fan, Panel, TV and Battery:
https://www.youtube.com/watch?v=qPnEw-MC_JE


Direct Current in Buildings - NEMA
https://www.nema.org/Standards/ComplimentaryDocuments/NEMA%20DCP%201-2018%20WATERMARKED.pdf


The Attraction of DC Power in Buildings - TechAdvantage
http://www.techadvantage.org/wp-content/uploads/2018/03/BO1D-63851-Andrew-Yip.pdf


DC power distribution in buildings
https://www.xergyconsulting.com/dc-power-distribution-buildings/


DC electricity networks
https://www.designingbuildings.co.uk/wiki/DC_electricity_networks


DC Power in Buildings - nreca
http://www.electric.coop/wp-content/uploads/2017/09/DCPowerinBuildings.pdf


DC: The power to change buildings
https://www.constructioncanada.net/dc-the-power-to-change-buildings/


Efficiency Comparison of AC and DC Distribution Networks
https://www.mdpi.com/2076-3417/9/3/582/pdf


A New DC Power Standard
https://www.buildings.com/article-details/articleid/8150/title/a-new-dc-power-standard-


New LEED pilot credit encourages energy savings with DC power systems
https://www.usgbc.org/articles/new-leed-pilot-credit-encourages-energy-savings-dc-power-systems
https://www.usgbc.org/node/12146484?return=/pilotcredits/all/all


Review of DC Power Distribution in Buildings: A Technology and Market Assessment
https://escholarship.org/uc/item/2dd536p1https://escholarship.org/uc/item/2dd536p1


DC House
Realizing a cost-effective zero net energy building through direct current (DC) residential distribution
https://www.ecmweb.com/contractor/dc-house


Edison Redux - 380 Vdc Brings Reliability and Efficiency to Sustainable Data Centers
http://magazine.ieee-pes.org/files/2012/11/10mpe06-allee-2212607-x.pdf


Historical choice: from 230 VAC to 350 VDC
NPR 9090: The first Practical Guideline for DC installations
https://www.directcurrent.eu/en/news/news-archive/200-historical-choice-from-230-vac-to-350-vdc



12V DC Solar CFL Light
https://www.ablamp.com/12vdc-cfl-solar-lamp

12 volt monster - low voltage compact fluorescent light bulb CFL lamp for DC 12V battery
https://www.youtube.com/watch?v=RdNaJjnfyBU


2VDC and 24VDC Input Electronic ballasts for fluorescent lamps -
24VAC input electronic ballast for fluorescent lights -
These high efficiency ballasts are for 20 and 40 watt fluorescent light fixtures in cars, RVs, boats, and solar systems.
https://www.powerstream.com/ballast-1.htm



And, even more!
 DC for power grid transmission:
From DC building to a DC distribution and transmission:
https://ec.europa.eu/energy/sites/ener/files/documents/6.bauer_tu_delft_dces_roadmap.pdf

P.S. Those in knowledge know that's not new. There are many DC high voltage lines, in some cases:
https://en.wikipedia.org/wiki/High-voltage_direct_current

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Untitled

ISLANDS and AREAS of LIGHT - Infrastructure Development
Subject: Electricity


The Ufer Grounding, a more preferable and more reliable electrical earth grounding for our Areas and Islands of Light.


"The Ufer Ground is an electrical earth grounding method developed during World War II. It uses a concrete-encased electrode to improve grounding in dry areas. The technique is used in construction of concrete foundations." 
https://en.wikipedia.org/wiki/Ufer_ground


https://www.inspectorsjournal.com/topic/1782-grounding-rebar-in-a-foundation/

https://www.ecmag.com/section/codes-standards/solid-ground-defining-and-understanding-ufer-ground

https://www.contractortalk.com/f77/rebar-grounding-electrode-question-77624/


A particular case of Ufer Grounding for our Islands and Areas of Light infrastructure development:
the stone masonry footing with plain concrete bed.

https://theconstructor.org/building/stone-masonry-footing-construction/21549/


The main concern of Areas and Islands of Light has to be the 'rising of consciousness', 'spiritual development' and 'first contact',
but not developing maintenance jobs.

So we have to develop an infrastructure with as less need of maintenance as possible. Isn't it?

We also have to 'forget', to put aside the nowadays 'standards' and 'regulations', at least to the extent at which it does not fit our interest of the Light Communities development...

We have to draw our own instead.

Let's do it together!



Discussion to continue...

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