![Mohamad Nassereddine](/img/default-banner.jpg)
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Mohamad Nassereddine
United Arab Emirates
Приєднався 19 лют 2020
Відео
Port and Maritime Event-Dubai May 1st
Переглядів 153 місяці тому
Panel Discussion: Governance in Port and Maritime Operations
Port and Maritime Event In Dubai-May 1st
Переглядів 233 місяці тому
Port and Maritime Event In Dubai-May 1st
Bio-gas System in Winter
Переглядів 467 місяців тому
Bio-gas performance exceeded expectations under cold winter season
How to fully charge an LFP cell to certain voltage
Переглядів 319 місяців тому
How to fully charge an LFP cell to certain voltage
LFP Cell Charging Profile under different current magnitude
Переглядів 219 місяців тому
LFP Cell Charging Profile under different current magnitude
Lightning requirements for Rooftop PV System
Переглядів 6510 місяців тому
Lightning requirements for Rooftop PV System
Recommended Earth Grid Resistance Value and how to measure the earth grid resistance
Переглядів 21610 місяців тому
Recommended Earth Grid Resistance Value and how to measure the earth grid resistance
PV and Biogas system for Standard Residential Properties-suitable for the MENA region
Переглядів 10410 місяців тому
PV and Biogas system for Standard Residential Properties-suitable for the MENA region
Power Factor Impact on Off-Grid Inverter
Переглядів 542Рік тому
Power Factor Impact on Off-Grid Inverter
High Voltage Substation Display at Middle East Energy Exhibition
Переглядів 114Рік тому
High Voltage Substation Display at Middle East Energy Exhibition
Smart Sustainable City at Middle East Energy Exists
Переглядів 30Рік тому
Smart Sustainable City at Middle East Energy Exists
3.2V 100Ah LFP cells discharge voltage and current profile
Переглядів 35Рік тому
3.2V 100Ah LFP cells discharge voltage and current profile
Nassereddine Hybrid PV system Power Distribution
Переглядів 76Рік тому
Nassereddine Hybrid PV system Power Distribution
High Voltage and Low Voltage Lithium Batteries
Переглядів 3 тис.Рік тому
High Voltage and Low Voltage Lithium Batteries
Nassereddine PV system operation and maintenance section 1
Переглядів 106Рік тому
Nassereddine PV system operation and maintenance section 1
LiFePO4 and SLA Battery High Level Explanation for PV System
Переглядів 1512 роки тому
LiFePO4 and SLA Battery High Level Explanation for PV System
Requirements for Hybrid Wind, Solar and Battery System
Переглядів 7862 роки тому
Requirements for Hybrid Wind, Solar and Battery System
Sir, usually for earth mat design we consider soil resistivity data at depth or spacing of 10meter for determining soil model. What should be the depth or spacing at which resistivity data should be considered please guide and also tell if there are any references in IEEE, for the same. Thanks
Watch this video especially in minute 40 to check the size of the soil data Also you can refer to IEEE 80 ua-cam.com/video/jeZEAqPjR7M/v-deo.htmlsi=uMzT44weMgMoqG2u
@@mohamadnassereddine5894 Sir we have received the resistivity data for different depth 0.5m,1m, 3m,5m, 7m,....upto 25m for different points of substation. Now my query is that upto what depth we have to consider for soil model
I’m sold on the high voltage system.
Hello, very nice but you missed something. The high voltage battery 560v consists of 10 x batteries in series and you compare the numbers with 1x51,2v battery. The correct comparison must be 10 in series or 10 in parallel and all numbers are equal! Also in parallel connection if 1 battery has a weak cell and falls behind in discharging the others take care of it whereas in series there is no help and the battery discharge equally so gets hot and stops the system. In parallel you can continue with 9..
We are referring to voltage levels. For the 51.2V the Ah will be ten time more. Regarding the unbalance cell, the BMs balancer will be activated to address the issue, similarly in the 51.2V battery Keep in mind all large scale energy storage including EVs one are made of HV batteries
@@mohamadnassereddine5894 no it won’t, if you apply a load of 50kw like EV car, the 10 in series will get 100amps and the 10 in parallel will get 100amps each, so the only problem is the thickness of the cable in parallel for the main positive-negative busbars (must carry 1000Amps), there are metal busbars which are bought once maybe in the whole lifespan of the batteries, another issue is the rating of the fuses (should be 200Aps for each battery.. all these increase the cost of ownership this is why in industrial scaling the high voltage steps in. But again I am telling you, if one cell fails for any reason (and Balancers /bms don’t save the day, most of them are rated 1A/2A) then whole unit pushes the load through that battery until it stops (low voltage or temperature) and then the unit stops. In parallel situation you can continue with 9 butteries or less provided you have rated cables,bms and fuse properly. Industry created the high voltage to reduce cost primarily and the complexity of components. I have around 100kwh of lifepo4 in 2 locations 48v systems off grid, and in parallel and it amazes me that the power is shared to the strong ones (higher capacity) , or higher state of charge by physics law. This would never happen in series, they discharge all together and charge all together and if one is left behind it takes the blame
Nice presentation but would hv been better if you had pictorial view of actual pv installation with lightning arresters, SPDs, earthing, etc.
where we can download the slides?
Earth resistance can be upgraded during time of Erection of substation or during mesh greed maintenence effectively using latest technology and material availability.
Hi. I need to calculate my home battery bank needs. In your video, How do you obtain the 5074.94 ah battery capacity to support the load for 10-hour operation on a low voltage battery of 51.2 at a power of 20.78 kw? Please to hear and show how this is derived. Thank you.
P r o m o S M
very good
Very helpful video
Very good.❤
Sir, Why is plant grounding not based on step and touch voltage calculations? Why just substations(IEEE-80)?
www.google.com/url?sa=i&url=https%3A%2F%2Fwww.researchgate.net%2Fprofile%2FPrem_Baboo%2Fpost%2FHow_to_calculate_the_apparent_resistivity_in_the_cases_of_horizontal_and_vertical_electrodes%2Fattachment%2F59d647c779197b80779a292e%2FAS%253A464139974909953%25401487671001366%2Fdownload%2FSoil-Resistivity-Data-Computations-Single-and-Two---Layer-Soil-Resistivity-Structure-and-Its-Implication-on-Earthing-Design.pdf&psig=AOvVaw0BHPJFRmaDRflYftCi4crZ&ust=1689945769396000&source=images&cd=vfe&opi=89978449&ved=0CBMQjhxqFwoTCNCkvfaxnYADFQAAAAAdAAAAABAE
Really appreciate! Thanks heaps!
That was beyond useful. Thank you very much
Very good explanation sir..Are you the lecturer from Western Sydney University?
"promo sm" 😈
Very good explanation, sir can you tell me which book you follow?
Perfect job, really appreciated Dr. Dr. Nassereddin, would you please tell me if there is a difference between LV substation grounding and MV substation grounding?
👎
Awesome
👍
What Is the difference between grid resistance calculation shown in ieee 80 by sevarks formula and ieee 142 chapter 4 , Table 13.
👌
can I have the slides please thank you
Perfect representation bro. Got a question 1- if we have an MPPT wind / solar controller, where we have to connect the inverter for ac household equipment ? 2- If we have an MPPT solar/ wind hybrid controller Instead of connecting the +/ - DC to the battery, can we connect +/- DC to solar MPPT inverter and let the inverter charge the batteries ! Thanks bro.
Great presentation Doctor
Thank you for your sharing ! However, could you show the calculation by using software of two-layer soil model? IEEE 81, Annex A and B?
Hello Dr. Mohamad, you mentioned reading the book in the video - where can I download/buy this book please? Thanks
Hi doctor Can I have your email for consulting ?
you did not include the hybrid design with battery design
Huge Thank you from a UK friend. I've spend 2 weeks 6h a day researching about putting in an off grid system. And bam! The best video with how to buy the correct items and how to set it up too.
Split factor sample calculations required to understand further
Why yo don't speak en arabic
Thanks for the video sir...It will be highly beneficial if you kindly continue this session..👍
Could you share the material ? Thanks
Great video Dr, keep it rolling 💪🏼👏🏼
What happens to step potential and touch potential if system is with NER reducing the ground fault current?
Excellent presentation
Great explanation sir
Amazing
Really find your presentations informative and resourceful.
I am going to watch all of these videos! Thank you!!!
A great proposal for Lebanon. I hope the Lebanese government can look at this seriously.
Ok followed everything except for how you selected a/h value from the Sunde's chart. The first time it seemed to correspond with the calculated p2/p1 value, but the second time seems arbitrary. The only correlation I am able to find between the 2 examples is they both seem to be close to the middle of that section of the Sundes Curve.
good lecture. but poor sounds and appearance
can I have the slides please
Thank you for the nice lecture!
how about not using Overhead lines ie use under ground cables
well done, very helpful