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Привет , это Doctorbass , я здесь новый

Автор doctorbass, 24 Янв. 2015 в 07:37

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doctorbass

Пожалуйста, поймите, я с помощью Google Translator писать здесь , чтобы уважать ваши русские ребята форум

Я , как правило, обмен свое время на форуме Общий сферы (с 2007 года ), и это мой первый пост здесь

Я только что получил один Max- E в последнее время и у меня есть к вам несколько вопросов .

Я знаю, чтоконтроллер будет меняться ШИМ в зависимости от напряжения , чтобы повысить с катушкой ..

Я не уверен на 100% , какadaptto использовать заряд катушку , но это возможно , чтобы использовать более высокое значение индуктивности , чем 15-30uH указано ? еслифактическая индуктивность получить действительно жарко, но это 15uH с 4-кратным параллельной 16 AWG на моем 48V 21A питания?

Еслимощность зарядки suppply имеют более низкую экс напряжение: 24-36V будетвыше индуктивность ( например: от 30 до 60uH ) помогают сохранить высокое напряжение в мкГн и работать лучше?

Что детерминированным требование индуктивности ценность?

Я могу построить любой индуктивности для любого тока и мкГн стоимости, но я хотел бы knwo который является самым лучшим для различных зарядки власти питания и напряжения.

Спасибо Вам большое!

Doc

Hello, I'm new here. i'm usually on the Endless-Sphere forum and share my time on E-S since 2007.

I have a questin regarding the charging coil.

I know that the controller will vary the pwm according to the voltage to boost with the coil..

I am not 100% sure how the adaptto use the charge coil but is it possible to use higher inductance value than the 15-30uH specified? if the actual inductance get really hot but is 15uH with 4x parallel 16 AWG on my 48V 21A power supply?

If the charging power suppply have lower voltage ex: 24-36V will a higher inductance( ex 30-60uH) help to store higher voltage per uH ?

What determinate the inductance requirement?

I can build any inductance for any current and uH value but i would like to knwo wich is the best for various charging power supply power and voltage.

Thanks you very much!

Doc

Kapitan

Привет DOC -
С прибытием.
Приятно тебя видеть у нас  на борту.
C наилучшими пожеланиями, Алексей.   Стать партнером Дуюнова и инвестором можно тут: http://reg.solargroup.pro/gda310

licwn

#2
Hello
It's look like adapto is ignoring questions about coil inductance. As I can see here https://electrotransport.ru/index.php?msg=509740 10uH is minimum. You can use 3 coil (one for each  phase wire) same time to get better current. And it will be better for controller too (less heating).
Here is recommendation how to build coil https://electrotransport.ru/index.php?msg=327156

First variant: Take ring Kool Mu from Magnetics. Size is  R 46,7 x 24,1 x 18, permeability µ = 60 or 90. Use 13 number of turns (µ=90) or 16 number of turns (µ=60) by wire with maximum diameter which will able to fully fill ring. Use stranded wire with strand diameter not more than 1.2mm (better to use 0.5-0.7mm).
This coil should be able to keep up to 2KW (2.5KW max without ventilation). 

Second variant: Take core E70 (http://ferrite.ru/warehouse/index.php?dispatch=attachments.getfile&attachment_id=786)
Use 10-12 number of turns by wire with maximum diameter which will able to fully fill core.
Air gap is about 2mm.
This coil should be able to keep up to 3KW.
Статистика по бу ноутбучным батареям - https://docs.google.com/spreadsheets/d/1fi4Pb0Ykkq0ODUuzSb-tBy3xsbT6h3WcfqyzYUOjk_Y/edit?usp=sharing

doctorbass

Thanks for these info guys, but what is the "gap" you are talking about?

Is it a gap that must be keep between the two half "E" shape of the coil magnetic core?

Please can you explain?

Doc

andreym

Цитата: doctorbass от 01 Фев. 2015 в 21:12
Thanks for these info guys, but what is the "gap" you are talking about?
Is it a gap that must be keep between the two half "E" shape of the coil magnetic core?
Please can you explain?
Doc
Exactly Doc, you understand correctly!
In case you use 2pcs regular E-shape ferrite core, you have to leave the air gap between them in order to avoid closed magnetic field.
1.5-2mm air gap is optimal in most cases.

Cheers,
Andrey.

doctorbass

Цитата: andreym от 01 Фев. 2015 в 21:46
Цитата: doctorbass от 01 Фев. 2015 в 21:12
Thanks for these info guys, but what is the "gap" you are talking about?
Is it a gap that must be keep between the two half "E" shape of the coil magnetic core?
Please can you explain?
Doc
Exactly Doc, you understand correctly!
In case you use 2pcs regular E-shape ferrite core, you have to leave the air gap between them in order to avoid closed magnetic field.
1.5-2mm air gap is optimal in most cases.

Cheers,
Andrey.

Ok i understand now, I will try that.  Something really strange is that on every toroidal core that i tried with various winding between 15-30uH, the winding is always COLD but the core become VERy hot fast... it's like the core is saturating but it also heat at low power... that is strange... This is beyond my personnal electronic experience limit now..  I might end out by ordering you a big 70A coil ( already have the reat of the harness and just need the coil or even just the core)

doctorbass

Ok I just got the big "E" core for the 70A setup.
I ordered it yesterday and received it by Fedex today!.. pretty fast shipping from Digikey !

The Core is the pn: E 70/33/32 from Epcos

I tested it with a simple 12Awg from Turnigy ( I know it is not the best wire choice but it was just for testing)

I placed the two "E" face to face to form a "8" core and installed some 1.5mm PCB for air gap between both.

Then i made about 14 turn of the  12 gauge wire. I got an inductance of about 70uH witch is more than double the max suggested 20-30uH value.  So i removed some turn until i acheive about 35uH.

Then i tested it and it seem to work ok from now for up to 700W.. My battery is FULL so i was not able to test at higher power. NOw i will use multiple parallel isolated 22 gauge single strands wire to wound it instead of one big wire. 

Now.. From the pictures of the Toroidal coil i saw, it look like

The wire that is used is multiple strands that seem to be twisted in the way of Litz wires are...  like the multiple strands are twisted togetherin these images




I just wonder if it is absoluty necessary to  twist all the multiple strands together before to wound the core with it? or if i can just wond all the parallel strands together at the same time?

Thanks for any help!
Doc

doctorbass

Цитата: licwn от 29 Янв. 2015 в 08:09
Hello
It's look like adapto is ignoring questions about coil inductance. As I can see here https://electrotransport.ru/index.php?msg=509740 10uH is minimum. You can use 3 coil (one for each  phase wire) same time to get better current. And it will be better for controller too (less heating).
Here is recommendation how to build coil https://electrotransport.ru/index.php?msg=327156

First variant: Take ring Kool Mu from Magnetics. Size is  R 46,7 x 24,1 x 18, permeability µ = 60 or 90. Use 13 number of turns (µ=90) or 16 number of turns (µ=60) by wire with maximum diameter which will able to fully fill ring. Use stranded wire with strand diameter not more than 1.2mm (better to use 0.5-0.7mm).
This coil should be able to keep up to 2KW (2.5KW max without ventilation). 

Second variant: Take core E70 (http://ferrite.ru/warehouse/index.php?dispatch=attachments.getfile&attachment_id=786)
Use 10-12 number of turns by wire with maximum diameter which will able to fully fill core.
Air gap is about 2mm.
This coil should be able to keep up to 3KW.

Is it absolutly necessary to fully fill the core?.. I mean i think that if i use about 36 strands of gauge 22 ( 0.65mm) and about 10 turn i should get about 40uH.. would it be OK.. can i have higher inductance than the 30uH.. how it affect the coil performance?..


andreym

Цитата: doctorbass от 04 Фев. 2015 в 08:22
Is it absolutly necessary to fully fill the core?.. I mean i think that if i use about 36 strands of gauge 22 ( 0.65mm) and about 10 turn i should get about 40uH.. would it be OK.. can i have higher inductance than the 30uH.. how it affect the coil performance?..
more inductance you have = easier for controller, But I`d suggest to fill maximum by adding strands in parallel, and you can add more air gap between the to E core parts, this will decrease the inductance as well.