• Howdy! we're looking for donations to finish custom knowledgebase software for this forum. Please see our Funding drive thread

Search results

Date Relevance Most replies

  1. K

    FOC for power and SOC (Stator Oriented Control) for regen?

    I assume you are running 2 controllers so each has 3 phases. What is the motor you are using for this,
  2. K

    Apex Microtechnology SA310 IC

    Amberwolf, Thank you for commenting. I did not want to set too many design conditions, but, to deal with your comment I would suggest the following: The motor design can be an axial flux motor that has an inner and outer ring wherein each ring can have one, two or more three phase winding...
  3. K

    Apex Microtechnology SA310 IC

    Just curious if anyone has been considering using the SA310 in a motor controller design. Maybe a small team (no cost to Apex) could convince Apex that a design concept that incorporates repairable battery block technology, active balancing battery management system, FOC based motor controller...
  4. K

    More than3 phases

    The previous discussion was titled "6 phase motors - are they all that?" in late 2014
  5. K

    Tesla patents techniques for improving motor power by changing the shape of some components

    for axial flux motors, flux saturation in coils is a good place to start. This means a non linear winding distribution and laminated core structure to support it.
  6. K

    serial battery block project

    Here is the last update I will post.
  7. K

    Is it possbile to add sin/cos encoder to the HUB?

    Ctirad, You may want to look at AS5047P High-Resolution Position Sensor. Good for 28krpm and 14 bits resolution on position. Also, has dynamic correction. Would have to mount on one side of a dual output shaft. Contact me by PM if you would like to see a PCB for this. kenkad
  8. K

    serial battery block project

    another update, The acrylic blocks were machined for the cell connection tabs. Here is a pic of where the tabs are in the top and bottom acrylic blocks. The pic includes the top block with the PCB attached (sits on top of the connection tabs and provides the 4-40 set screw hardware so the...
  9. K

    serial battery block project

    another update, Here is a pic of the connector PCB with the 18650 contact tabs attached. I will mention again that this is 15A max (5C), so, eight battery blocks can give you 120A, assuming that the BMS controller sees that all the battery blocks are within a voltage tolerance. I will post...
  10. K

    serial battery block project

    sm, Hardly discouraged! The entire electrical system needs some new thought. The battery is just one element. My long term interests are projects and technology directed toward single passenger urban commuting technology/vehicles. Unfortunately, not too much thought process or activity in...
  11. K

    serial battery block project

    Just an update and some comments: 1. punch with die springs and punched contact tabs 2. closeup of contact tabs with dimples 3. acrylic battery block shell with PCB and power connector 4. closeup of power connector 5. initial Al battery shell concept model (actual shells will be machined cast...
  12. K

    Uniti — Swedish EV Startup

    Appears to have joy stick steering with the HUD. Finally someone got some sense. Electric controls that can be tailored to the driver.
  13. K

    Enlighten me please: why focus on P connections, not S?

    kevbo, Surely you are trying to start an argument (I am smiling). I am a strong proponent of serial blocks that are paralleled. I am also not a proponent of spot welding or permanently fixed cell to cell connections. You can PM me if you want to discuss alternatives. I am not interested in...
  14. K

    serial battery block project

    I thought I would share some info on a University senior student project that is being planned for Fall 2017. My interest is specifically serial battery blocks connected in parallel as part of single passenger urban commuting vehicle technology development (fancy trikes/velomobiles). I have...
  15. K

    2017 battery architecture resolutions?

    Anyone have detailed plans for battery architectures? For example, 1. No spot welding designs so easy repair of individual cells. 2. Serial blocks that are paralleled. 3. Single active balance BMS to manage all the blocks sequentially. 4. A BMS that actually controls the motor control action...
  16. K

    Anyone have direct contact with DOE ARPA-E?

    I am curious if anyone on this forum has ever had any direct contact with ARPA-E either via direct funding or through a academic grant relative to battery management systems technology? Thank you for responding. kenkad
  17. K

    actual 18650 cell anode end dimensions

    WOW, a vape test site! But you have to 18!
  18. K

    actual 18650 cell anode end dimensions

    Just received this from a 18650 supplier (will remain unnamed). ***************************************************************************************** And you asked about Samsung, not Sony. I mentioned in my email* it's manufacturer and model specific. *The Samsung models I have have no...
  19. K

    actual 18650 cell anode end dimensions

    bowlofsalad, A button top is just as it says. Primarily designed for flashlights, etc., or cell holders. And, NO, the tolerance on the cell has nothing to do with the 0.2mm at the top. I personally think that the 0.2mm is consistent with the thickness of the isolation rings that are...
  20. K

    actual 18650 cell anode end dimensions

    I am wondering why Sony provides the attached JPG of their VTC5 cell dimensions and yet when I communicate with cell suppliers they say that the anode top is absolutely flush with the shrink wrap edge. Can anyone shed more light on this question?
  21. K

    Revolt motor std shipping to USA, how long?

    Amazing, arrived without any notice by USPS this morning. What good is tracking when you get the item before USPS posts tracking information. So, for anyone who is interested, 7 weeks shipping for standard to USA. Packaging is excellent and initial inspection shows no damage to the motor...
  22. K

    Revolt motor std shipping to USA, how long?

    Wheazel, Thank you so much for responding. It was shipped through Israel post on Dec 20. This is now about 40 days so almost 6 weeks. This is for a student project to electrify a tadpole trike (special frame provided by Performer), so time is not critical, I just do not want it to get lost in...
  23. K

    Revolt motor std shipping to USA, how long?

    Hello, Anyone who has had a Revolt motor shipped standard shipping (I assume by boat container first to US), can you indicate what the length of time it took to get your motor via USPS? Thanks. Mine is on/in some container on a slow boat and it has been over 5 weeks. Still no indication that...
  24. K

    Adaptto Mini-E/Max-E Owner's Thread

    Allex, Thanks for posting that part of his reply. There is a bit more, has to do with "potential twitchy throttle response"? I can understand the regen part, I do not quite understand what the throttle response has to do with my question (probably has to do with microcontroller's ability to...
  25. K

    N-cell serial bat blocks connected in parallel - BMS concept

    Velias, We have a solution for the problem you mentioned. Glad you read the data sheet. Are you referring to the LT8584 at Linear Tech? If so, it does not have the same functionality. Ti is not responding to any questions and it takes too many parts. Thanks for responding.
Back
Top