Energy Saving design scheme for electric vehicle battery chargers



Title: Optimal trade-off between hard and soft-switching to achieve energy saving in industrial electric vehicles

Authors: Pramod Kumar Prasobhu, Student Member, IEEE, Felix Hoffmann, Student Member, IEEE, Marco Liserre, Fellow, IEEE

Affiliation: Chair of Power Electronics,
Christian-Albrechts-Universitat zu Kiel, Kaiserstr. 2, 24143 Kiel, Germany
Email: pkp@tf.uni-kiel.de, fho@tf.uni-kiel.de, ml@tf.uni-kiel.de

Abstract—

DC/DC battery chargers used in industrial electric vehicle applications are designed to be size, weight and power efficient. Wide bandgap (WBG) devices which enable high frequency operations help reduce size of magnetics as well as the converter volume achieving better efficiencies compared to Si based solutions. It has not been often discussed in literature but in case of battery chargers the overall saved energy becomes a better performance indicator than the efficiency at rated power alone. This is due to their peculiar charge=discharge characteristics. In this paper, the design of a GaN (Gallium nitride) converter for an industrial battery charger application is studied. An optimal design procedure aiming at optimizing the converter energy utilization efficiency (EUE) over the complete state of charge (SoC) as well as minimizing BOM (Bill of Material) costs due to magnetics is presented in order to highlight the energy perspective. The results show considerable energy savings compared to conventional design methods.

Other information:
Presented at: IEEE-IES IECON 2018, Washington D.C. as part of SYPA travel grant and initiation
Research at: Chair of Power Electronics, CAU, Kiel, Germany
Audio license –
Sparks by Chaël https://soundcloud.com/chael_music
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
http://creativecommons.org/licenses/b…
Music promoted by Audio Library https://youtu.be/XIoyEFrDRDo

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How to Check/ Test your Car Battery with a Multimeter | AnthonyJ350



In this video we conduct several battery tests using a multimeter. There are other tools that are more sophisticated or tailored for this type of test. But most people have this tool and it can help give you an idea where your charging system is at.

#BatteryTest #MultiMeter #CarBattery

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I am a Mobile Electronics Certified Professional 12 Volt Installer (MECP Certified), Business Management Graduate (KPU), with a Professional Driver’s License and a genuine automotive enthusiast who loves working on vehicles and I want to share my experiences with you. The goal is to help other people who can hopefully learn from my unique outlook towards vehicles, experiences and working practices.

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Interested Solar Energy Facts

It's really important for all people to learn a few standard solar energy facts to ensure that they can truly appreciate the entire potential and various fields of applications for this plentiful energy supply. Solar power is definitely the most ecologically friendly and most desirable of all alternative energy resources. Currently annually worldwide energy usage is around approximately 550 exajoules (523 Quadrillion BTUs) per year. Every year the earth's atmosphere, oceans, and land masses receive approximately 3,850,000 exajoules of energy from the sun's rays. Once this is taken into account anyone should be able to start to grasp precisely why the solar energy industry is eagerly working to improve processes to harness solar power. The Desertec foundation theorizes that covering just 1% of desert environments around the world with solar PV panels could very well power up the entire planet.

Listed below is a brief background of historical solar energy facts:

– The use of solar power by humankind is not new; countless ancient civilizations have utilized it in one form or another.

– Leonardo da Vinci was actually among the 1st modern thinkers to conceive industrial usage of solar energy to heat up water.

– The French scientist Edmond Becquerel observed the photovoltaic effect while experimenting with electrolytic cells in 1839.

– In 1894, Clarence Kemp, an inventor filed and obtained a patent for the design of the world's 1st solar-powered water heater.

– The world's 1st solar thermal power station was built by Frank Shuman in 1913. The station that was located in Egypt utilized parabolic trough-shaped mirrors to be able to heat water in boilers to drive a 65 horsepower engine. The engine pumped nearly 6,000 gallons of water each minute from the Nile River to adjacent crops.

– The first modern photovoltaic (PV) solar cell was designed at Bell Laboratories in the year 1954.

The following are a number of more technical solar energy facts:

– Solar devices are one of two types, active and passive. Active solar power devices use photovoltaic cells and passive devices are thermal based.

– Solar photovoltaic systems are currently the most common energy transformation devices, which make use of solar cells in modules to make light directly into electrical energy.

– Thermal based solar power systems sometimes use molten salts to hold solar energy at very high temperature because of their high specific heat energy qualities.

– The International Energy Agency (IEA) has forecasted that by the year 2060 around 33% of the world's power demands are going to be generated by using solar power technologies like photovoltaic panels, water heaters and solar electrical power stations.

– The Nokia 1610 plus was actually the first commercial solar-powered cell phone introduced by the Finnish manufacturer in 1997.

The following is a list of important solar installations through the globe:

– Solar Energy Generating Systems (SEGS) is a collection of 9 power facilities located within the Mojave Desert in California. SEGS maintains the classification of being the world's largest solar power station having a bundled production capacity of approximately 354 megawatts.

– In most cases big solar power facilities make use of photovoltaic cells for electric power generation, simply because they are currently much more cost-effective when utilized on a large scale. The planet's largest photovoltaic power plant is located in Sarnia, Canada, which provides a production capacity of 97 megawatts.

– The Andasol plant in Spain having an electrical power output of 250 megawatts is the second largest solar electric power plant in the world.

– The world's largest Scheffler reflector system located in Rajasthan, India is able to cook up to 35,000 meals a day.

– The world's largest thin-film photovoltaic power system "Waldpolenz Solar Park" is located in Germany.

– Topaz Solar Farm, a 550-megawatt solar photovoltaic power facility that is currently being built, is going to be among the largest facilities after completion.

Solar energy facts about solar-powered flight:

– The Astro Flight – Sunrise, an unmanned air vehicle developed in 1975 was the 1st solar-powered aircraft.

– The Gossamer Penguin, created in 1980, was the 1st plane only fueled by photovoltaic cells that was capable of carrying a person.

– Helios, an unmanned air vehicle, operated in part by solar PV panels accommodates the record for achieving the highest altitude of 96,863 ft, as well as a world record for sustained horizontal flight by a winged aircraft.

– Vanguard 1, an American satellite launched in 1958 was the world's 1st solar-powered satellite. Amazingly the satellite still orbits and it celebrated its 50th birthday in 2008.

– IKAROS (Interplanetary Kite-craft Accelerated by Radiation Of the Sun) is the 1st spacecraft to successfully demonstrate solar-sail technology in space. The Japanese deployed the spacecraft in 2010 aboard an H-IIA rocket.

Because of the prolonged volatility of oil prices along with the fact that the average individual is actually more aware of their natural environment, there has actually been a greater push for the development of renewable energy. This elevated drive for non-fossil fuel electrical power will definitely aid to lower the cost of solar panels as well as various other renewable energy solutions. A need for corporations to appear environmentally aware has spoken about significant ad efforts from energy giants including BP and General Electric, showing their financial investments in environmentally friendly sources of power. These energy titans are not the only ones getting into sustainable energy, the rising cost for natural gas, coal, and oil already have forced energy costs higher and made "green" energy sources which include solar power, a possible economic choice for many people. Demand relating to solar energy has increased at 30% annually over the previous 15 years. In 2009, photovoltaic solar installations expanded by 20%, versus 2008, with above 7.3GW of photovoltaic solar panel installations across the globe. Earnings in 2009 from the photovoltaic solar industry also grew, getting to $ 38.5 billion.

The attraction to solar power is obvious. It is a virtual infinite energy source. It's free of greenhouse gas emissions, typically believed to lead to planetary climatic change. In industrialized countries that use a huge amount of air conditioning units, it makes more electricity exactly at the time you need to have it – during circumstances of highest electrical power usage. Once put in, solar power systems may very well operate for 30 years or more requiring a minimal amount of routine maintenance or management. At the same time, solar does come with some disadvantages, particularly the poor efficiency of photovoltaic solar modules, which is further reduced by the need to transform DC from the solar power cells into AC current. In addition, solar power relays on the weather conditions and also time of day, requiring battery storage or alternate systems to supplement during periods of weak power generation. Overall the beneficial solar energy facts considerably outweigh the unfavorable. These positive facts assist to exhibit this very important change in the direction of more predominant use of solar power, which certainly will provide a prosperous and healthy planet for many generations to come.

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Energy Saving design scheme for electric vehicle battery chargers



Title: Optimal trade-off between hard and soft-switching to achieve energy saving in industrial electric vehicles

Authors: Pramod Kumar Prasobhu, Student Member, IEEE, Felix Hoffmann, Student Member, IEEE, Marco Liserre, Fellow, IEEE

Affiliation: Chair of Power Electronics,
Christian-Albrechts-Universitat zu Kiel, Kaiserstr. 2, 24143 Kiel, Germany

Email: pkp@tf.uni-kiel.de, fho@tf.uni-kiel.de, ml@tf.uni-kiel.de

Abstract—

DC/DC battery chargers used in industrial electric vehicle applications are designed to be size, weight and power
efficient. Wide bandgap (WBG) devices which enable high frequency operations help reduce size of magnetics as well as
the converter volume achieving better efficiencies compared to Si based solutions. It has not been often discussed in literature but in
case of battery chargers the overall saved energy becomes a better performance indicator than the efficiency at rated power alone.
This is due to their peculiar charge=discharge characteristics. In this paper, the design of a GaN (Gallium nitride) converter
for an industrial battery charger application is studied. An optimal design procedure aiming at optimizing the converter
energy utilization efficiency (EUE) over the complete state of charge (SoC) as well as minimizing BOM (Bill of Material)
costs due to magnetics is presented in order to highlight the energy perspective. The results show considerable energy savings
compared to conventional design methods.

Other information:
Presented at: IEEE-IES IECON 2018, Washington D.C. as part of SYPA travel grant and initiation

Research at: Chair of Power Electronics, CAU, Kiel, Germany

Audio license –
Sparks by Chaël https://soundcloud.com/chael_music
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
http://creativecommons.org/licenses/b…
Music promoted by Audio Library https://youtu.be/XIoyEFrDRDo

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Nocheski Solar: Solar power installers in Ghana-Victron Energy



There many misconceptions in the Ghana Solar power industry,Our Managing partner explains how Nocheski Solar overcomes this in partnership with Victron Energy. Our products range include sinewave inverters, sinewave inverters/chargers, battery chargers, DC/DC converters, transfer switches, battery monitors and more. Victron Energy has a strong, unrivaled reputation for technical innovation, reliability, and build quality. Our products are widely considered to be the professional choice for independent electric power.Call Nocheski solar 0244270092 email tema@nocheski.com

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Cut Your Energy Bills in Half by Building an Energy Efficient Home!

Energy! This 6 letter word has easily become one of the most popular words in the world as oil prices, gas prices and energy prices have sky-rocketed! As I write this, oil is over $ 140 a barrel, gas prices where I live are hovering at $ 4.00 a gallon and electricity rates are rough $ 19. kwh. Now more than ever people are looking for ways to cut or slash their energy costs!

Back in late 2004 when I was designing (14) semi custom patio homes, I felt very strongly about energy efficiency and I knew that one day real soon, everyone would be concerned about energy efficiency! During this time, way before it was popular, I was building my homes with radiant barriers, energy efficient cooling systems and managed water systems. At that time these technologies were viewed as expensive alternatives to the standard construction procedures and products generally offered by builders, but the sentiment has now changed. These once overlooked technologies are quickly becoming the standard.

With this increased attention on energy efficiency, the real question is how can you build an energy efficient home without busting your budget! Most builders and contractors are charging premiums for outfitting homes with energy efficient products and it seems that overnight a whole new cottage industry has been created offering a host of high dollar energy saving solutions! Despite the glossy brochures, impressive sales presentations and overly accommodating sales representatives I think some of these products are overkill and their claims of costs savings in many cases are exaggerated at best!

So what is an Owner Builder to do? For starters, the first step in properly planning the construction of an energy efficient home is to consider what your overall budget is for the home you are building and within that budget how much (as a percentage) are you willing to invest in reducing your energy costs. In many cases, this figure could be as high as 10% however the average is anywhere from 5-8.5% of the overall cost of the home.

The first thing you want to consider is the climate for the area you are building in and the building envelope materials. Most homes through the United States consist of brick, Hardi-plank © siding and / or concrete. Concrete is green and energy efficient however it can be costly and there are several additional factors to consider such as lead times, renting pump trucks and higher labor costs. With that said, in places like Florida due to hurricanes concrete homes are the standard in many cases so there are exceptions. Brick on the other hand is a low maintenance product that offers several energy saving benefits when installed properly. Ideally you want an exterior product that will insulate your home from the forces of nature and contribute to your overall plan of lower energy costs.

The next step in building an energy efficient home is outfitting your home with the proper sized heating & cooling system AND choosing a qualified reputable contractor to install it. To ensure you have the rightized system, I suggest you invest in a Manual J analysis on your home plans. This analysis will give detailed suggestions on the type and size of heating & cooling system for your home based on its size and location. The small investment you make in performing this analysis will produce huge dividends in energy savings and reduced maintenance expenses.

Another important thing during this stage of planning is to have an Electrical Technician design an electrical plan for your home. This electrical plan will insure that you have the proper amount of outlets through the home and it will insure they have the proper voltage to ensure that you never overload a circuit or exert unnecessary pressure on any part of your electrical system. These (2) steps by themselves will produce a home that will save you hundreds if not thousands of dollars a year on your electrical bill and produce a more enjoyable living experience for you and the other occupants of your Dream Home.

The next energy saving feature to consider is the insulation system you will use. Recently there have been several foam based products that have grown increasingly popular due to their ability to create an air tight building envelope. This is great for those climates that have extremely fiercely winters and moderate summers but for humid climates like Houston, Texas where I live, these products can create HUGE problems because of mold issues! If you live in the Midwest or Upper East coast then these foam products will work great and by themselves they will cut your heating & cooling costs in half!

However if you are like me and live in the Southwest, I suggest using a battled fiberglass solution in most cases with facing on the side that faces the sheetrock and a blown-in insulation for your attic applications. I usually suggest that you use a razor and cut lines in the facing before covering them up with sheetrock to allow the walls to breathe. This one minor step prevents mold growth as it allows air to freely move through the walls prohibiting moisture.

My next recommendation has become commonplace in the homes of the finer custom homebuilders and in many cases is offered as an upgrade by the tract homebuilders and that is radiant barriers! Quite simply, a radiant barrier is the foil like surface that is on the underside of the plywood-like material that you see in your attic that your roof is nailed to. The purpose of the radiant barrier is to prevent the heat from the sun from coming into the home via the roof.

Usually a radiant barrier blocks as much as 50% of the suns ultraviolet rays theseby reducing your attic temperature by as much as 30% or more in some applications. This feature is not very expensive and usually costs $ 30.00 – $ 35.00 per 4×8 sheet in comparison to the non radiant barrier sheets which generally cost $ 23.00 – $ 28.00 per 4×8 sheet. Again, this small investment will produce huge gains via the lower energy bills and increased comfort and quality of lifestyle it will afford you and your family.

This next energy saving feature is one of my favorite of all features and that is the tank-less water heater! Can you believe it, a water heater the size of a shoe box! These have got to be one of the coolest products on the market and besides the energy savings they provide, you will also like that they produce an endless flow of hot water! Tank-less water heaters are rapidly gaining steam (pun intended) in the custom home market despite being reasonably higher than your standard water heater, but it's a worthy investment to say the least!

Our last energy saving product is a Mana-Bloc © managed plumbing system. This plumbing system will save you money on your water bill as it will reduce the amount of water waste and it allows you to manage every single water feature in your home. So if you have a hot water leak in your half bath, you can cut off the hot water in that area without affecting the cold water or any other water feature in the home. In addition to that you do not have to worry about water leaking until you get the leak repaired which causes water damage and mold!

These managed systems really represent the future of home efficiency products with their ability to customize and manage every aspect of your water consumption and provide a better overall quality of lifestyle for the end user!

I can assure you that if you follow the steps outlined here and consistently considering the products and procedures outlined you will cut your energy costs by half (or more) in your Custom Dream Home! As energy prices continue to rise, this strategic energy planning and thinking regarding building a home will become a standard procedure for Owner Builders and home buyers alike.

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#DIY(Review) DIY 5V 2A Solar Panel Power Bank USB Charge Voltage Controller Regulator Module 6V-20V



I wanted to see how good this module was, I am using a 5V Solar Panel rated at 2.5W which is 500mAh. Not sure how accurate that spec is but will find out in this video.

So the goal is to make a effective Solar Charger not just something for show.

5v 2A Solar Panel Power Bank USB Charge Voltage Controller Regulator 6V-20V

https://www.ebay.com/itm/5v-2A-Solar-Panel-Power-Bank-USB-Charge-Voltage-Controller-Regulator-6V-20V-/112729886478?hash=item1a3f398f0e

Song: Joakim Karud – Waves (Vlog No Copyright Music)
Music provided by Vlog No Copyright Music.
Video Link: https://youtu.be/VMghJ_civuM

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Free Energy Charger using Piezo Lgniter



Free Energy Generator
For SmartPhone Charger

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低功率設計與獵能技術 Battery charger for energy harvesting



低功率設計與獵能技術 Battery charger for energy harvesting

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How to make Battery Re-charger form 220V



How to make Battery Re-charger form 220V

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