ELVDC Standard 'IS 16711 / 2017'

ISLANDS and AREAS of LIGHT – Infrastructure Development

Subject: Electricity – Off-grid ELVDC 48V power distribution

The Indian Standard  'IS 16711 / 2017' – a valuable paper to be followed 
for the firsts Islands of Light (probable even in the early 'post Event era'), we are entitled to consider as an (already in place) standard  of
48 V ELVDC Distribution System

- Guidelines

https://www.services.bis.gov.in:8071/php/BIS/bisconnect/pow/is_details?IDS=MjI3MTI%3D

The same may proper apply for any off-grid community...

Standard: Title IS 16711 / 2017 - "IS 16711 / 2017"

48 V ELVDC Distribution System - Guidelines

https://www.services.bis.gov.in:8071/php/BIS/bisconnect/pow/is_details?IDS=MjI3MTI%3D



[Images are posted for educational purpose only]

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ISLANDS and AREAS of LIGHT - Infrastructure Development  

Electricity – Some useful links for ELVDC LED lighting:

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http://www.hailuxlighting.com/products/tunable-white-cob-led/


Ultra Bright 1500LM 15W COB LED Light Source 12V DC
https://www.dhgate.com/product/10pcs-94x50mm-dc-12v-15w-cob-led-light-chip/416349467.html


https://www.satisled.com/shop/product/cree-cxa2530-1304-1507-1512-1816-1820-cob-led-emitter-warm-neutral-white-6180



http://www.opticsledlens.com/products/p_88.html

https://www.indiamart.com/proddetail/cob-led-lens-15336610533.html



https://ledgardener.com/selecting-led-cobs-matching-drivers/


https://learnew-led.manufacturer.globalsources.com/si/6008851537061/pdtl/LED-grow/1165441578/grow-led-lights.htm



48V DC - Mid Power (20W - 50W) COB LED
http://www.high-cri-led.com/products/led_cob/mid_power/cob3026.php

48V DC - High Power (200W) COB LED
https://www.amazon.com/MARSWALLED-DC47V-56V-3-55A-4-1A-Landscape-Spotlight/dp/B07C6BGRXZ


https://www.alibaba.com/product-detail/High-Power-Lights-Lighting-5W-10W_60506627839.html?spm=a2700.details.maylikehoz.1.355f1ebbxt3sjU


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Suitable lighting units for lensed COB LEDs:

https://lightcommunitylighting.blogspot.com/p/outdoor-radial-waves-open-lighting.html
https://lightcommunitylighting.blogspot.com/p/blog-page_4.html

https://lightcommunitylighting.blogspot.com/p/blog-page_25.html
https://lightcommunitylighting.blogspot.com/p/evldc.html

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Cobra's up to date post: http://2012portal.blogspot.com/2019/08/the-grand-cross.html

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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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