Thank you - I was worried I would glaze people over and tried to keep it short and sweet. You are one of us whom at this point I consider an expert with most everything you have touched... great mods and insights and much better documentation skills than I possess. Really I have 11... sorry, just checked 18 versions of my 9 month behind schedule "Infineon Controllers Unleashed" manual I promised everyone way back... I have about 50% of the content complete in much more detail than I could find with reference links so people can follow definitions and examples out on the web relating to each part of the book... But still, its not finished. For as many questions I have answered about infineons in PM and other threads (I attribute 50% of other threads to users not spending time searching for answers first) I could have finished the entire freaking manual and since my work load from the past 2 weeks has finally died down (PM me if you want details, not for public consumption) and my new meanwells nor gary's new 4.0.8 charge controllers, my #25 drive sprockets in 3/8, 8mm and 10mm Bore and teeth from 10 to 60 for the rear sprocket, my front 20" geareds aren't here yet and... well other than some software I need to finish, I suppose it's time to crack down and restructure the book... inserting the videos and graphics of the various mods and so on.... I need to build up some controllers this weekend anyway, I'm selling 2 700C 9x7 kits and though I'm really giving them away already I know the hardest part for most people is opening the case and adding a programming port so install a weather proof phone jack in the end of the controller and will provide the 4 conductor phone cable to 7 pin 6S balance plug Male... then user can adapt to their USB-TTL adapter and will be able to flash... yep the phone jacks have rubber weather stopper when not in use.
Guess I haven't had time to look in on this thread in a while but I always see people asking about Block Time and the generic recomendation about Phase current being set at 2.5 x primary current and it's just not always the right answer and since I spent literally months testing all the abilities of the basic 846 infineon 9FET I think I have resolved 99% of how it functions internally and most of the tricks (sw) that can be done why not elaborate a bit.
Here is the real secret, the hush hush engineers don't want you to know... are you ready?
Although Block Time, Current Limits and Speed % all effect performance and if used / tuned properly can not only get you more accelleration, top end and efficiency but in many cases you can also ensure the life of your motor... but that's not the real purpose of Block Time and Phase Current multiplication......
The brutal and sad truth... a secret that retail vendors, online vendors, distributors, dealers, brokerage agents (frieght forwarders), middlemen and 98% (conservative estimate) of end consumers are going to be pissed with me for revealing the sad truth here in a public forum, or in the case of customers, dealerships (LBS), etc they will be pissed at their vendors, distributors and the manufacturers but I just don't care.
** Please note this before reading further
<-- WARNING: My mind is burnt from all the buzzing around today (300+ miles, a trip to Downtube.com retail then warehouse for a new nova folder and some spare parts, a trip to ebikekit to pickup a 9FS black folder I loaned them for the GMA appearance, converted / automated my fathers house with x10 because he is vision impaired and oh yea got him a new 3GS iPhone and constructed a complete (*Yes, 100% all screen resources/graphics) theme for not only Winterboard but also for every system screen since the iPhone 3GS 3.1.3 accessibility is messed up... sorry I digress) -->
Now you see I may be a bit off my game but I'll give it my best shot:
So have you noticed on a stock controller (just basic stock settings for DD motor 2.5x phase current 100% throttle) that you get a good bit of launch but then it piddles out within 2-3 seconds... still accellerating but not GTO or 442 slamed accelleration? Like your still accellerating just not as rapidly, it's because you aren't!
Here is what I believe happens after careful testing, data collection and just general common sense applied to collected data - where I openly may have somthing fundamental wrong I will prefix with *:
[Example - Block Time, Primary and Phase Currents]
Loaded kV: 10.10kv - Actually specified as 485 RPM @ 48v (never did get nominal or max or lvc back from 9C)
Maximum Efficiency: 82%
*** These are rough and calculate with known formulas but could be +- 5 to 10%
No Load kV: 11.28 RPM per Volt (10.10 * 1.18) - account for motor efficiency which is 82% so increase loaded kV by 1.18 to get the no load speed.
KT: 120.1241134751773049645390070922 inch ounces of Torque per Amp
ft lbs: 0.6256464243498817966903073286052 torque per Amp
1.) Lets begin with the 1:1 or equal phase and primary currents, best case scenario would be 22A - the torque would be: 13.764221335697399527186761229314 ft lbs / 2642.7304964539007092198581560284 in oz
2.) Now lets assume BT is still at 1 but Phase Current is 2.5 x Primary Current 22A or Phase Current = 55A per phase, generating: 6606.826241134751773049645390071 in oz /
34.410553339243498817966903073286 ft lbs torque - better but wait there is more...
3.) If durring #2 you were to go to 90% throttle (return of 4.5v), Block Time would kick in - Although I spent maybe 10 minutes on confirming (to my satisfaction) that the setting was the number of seconds which
you can exceed the current limit for.... I do not believe it has anything to do with how much current to allow to slip through (ie: 1=XAmps, 2=XAmps, etc) , just how long to hold off on before imposing the proper
current limit. My process behind this conclusion/observation is that when I set Block Time to 2 and did a trainer with full resistance full throttle test: The current limit was set for 32A (otherwise stock) and it
pushed right up to 60 some AMPS which was when I let go of the disc... then I tested using Block Time of 4 (Infineon will cutout in 5 seconds in stalled / semi stalled condition), same everything in programming
32A limit and all - The result... same limit to begin with but 2 extra seconds of "run away" and I peaked at 70A.
4.) Although I cant get the factory settings (won't release them) or a factory ASC file... I don't know what they normally use for BT out of the box, I stick with 4 seconds now which works perfect for me.
Now Really the reason for all this is because most of the "vendor" batts won't handle more than 20-25A...
Oh well, truth is out...
BTW: Give this a shot... open Parameter Designer in Hex Edit and modify the section where block time entries are located to give higher block times, if it's in the GUI the controller will accept it, this works for LVC and Tolerance, Speed % (like 125%, etc) and several other things you may want to tweak.
I'll get working on finishing the book and release it as an Alpha hopefully friday night saturday morning...
That said, I have a call to arms guys...
I have Infineon EB806, EB809, EB812 - 846 in 6 FET (P75N75), 9FET (P75N75) and a single 12 FET (P75N75) -
I am still looking for the following for review, documentation and testing:
EB206, EB209, EB212 - 6 FET with 116 Processors. I have none of these and would be willing to either send a 9FET in exchange (brand new), test and return or purchase... I also need 2 more 6 FET Infineon EB806 controllers also for testing as Ive just toasted my last 2 boards.
If you have any of these you want to trade, sell or loan... please PM me. I would like to include details on them in my book if possible (maybe it will have to be Volume #2)
Thanks in advance!
2010 Dahon Jack - GNG v1 - LYEN 6FET - 20/40A - 18S2P10AH - Nom:66.6v,1332w
2004 Hard Rock Pro Disc - Recumpence ms eDrive v4 - Astro 3220 4T - 12S2P16AH - HV110 - Left Side Drive - Gearing: 38mph
Nominal Peak Power @ 60 seconds: 5328 watts - Maximum Power: 49.8v, 120A, 5872w
2010 Downtube 8FH - Stock GNG v1 Stock Controller - EB809XC - 12-16S
2012 Downtube Nova 7spd - Stock GNG v2 - 12S2P10AH - EB809 - 12S-16S - 20A/30A,Nom VCC: 44.4, 888w