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  1. jlcortex

    Adding hall sensors to outrunners

    Ok, thanks!, i want to build this small PCB and use SMD sensors, Let's see if this works!
  2. jlcortex

    Adding hall sensors to outrunners

    Hi, could you review my math? I have made the calculations according to what I have understood reading this thread but the result seems strange to me because they are very close The motor has 28 magnets and 24 slots 28/2=14 electrical revolutions 360/14 = 25.71 degrees for each electrical...
  3. jlcortex

    Development of a Sensorless PMSM ACIM FOC controller based on InstaSPIN

    Hi all, I am working working on a 600V/600A sensorless inverter than can work on ACIM, PMSM and BLDC using FOC sensorless with a firmware called InstaSPIN (Texas Instriuments) I like InstaSPIN because we have been testing some other FOC algorithms*and InstaSPIN give better results, Especially...
  4. jlcortex

    build a motor-generator based on a automotive alternator stator

    some pictures of the process
  5. jlcortex

    build a motor-generator based on a automotive alternator stator

    I have built the motor and tested it in short-circuited stator I am using a motorcycle chasis dyno to measure torque. I accelerate the roller (flywheel) and measure negative torque until roller stops. It gives me about 19Nm when it should be something about 90Nm I think I made a mistake, I...
  6. jlcortex

    Axiom: a 100kW+ motor controller

    Hello, someone has tested FF600R06ME3 from aliexpress?, prices are 1/4 the price at mouser! about 40€, is it possible?
  7. jlcortex

    build a motor-generator based on a automotive alternator stator

    hello all, I want to make a motor-generator of about 22kw based on this existing stator: It is 48 slot 126mm internal diameter, it is for a 16 magnet rotor I would like some advice. I am drawing a IPM rotor because it seems easier than external magnets and more robust. I thought about a V...
  8. jlcortex

    Abyxx280, DIY Sensorless FOC ACIM motor controller.

    Peters, At the moment I bought 6 IGBTs on EBAY, "Semikron SKM400GB126D IGBT Modul 1200V 470A", they are used, and have cost € 38 each. The capacitors are not selected, but I have seen that now the film DC-link capacitors are very popular and afordable. About software, i am thinking to use...
  9. jlcortex

    Abyxx280, DIY Sensorless FOC ACIM motor controller.

    Testing a 7.5kw motor with Sensorless FOC and a power supply of 32V! 7JtActRfVlo
  10. jlcortex

    Abyxx280, DIY Sensorless FOC ACIM motor controller.

    Hi, I have been working all the Christmas holidays on this project. Probably too much ambitious project but I would like to do something important. It is maintly focus to rewinded induction motors, I help to test a rewinded 5.5kw induction motor, we get 32kw mechanical power on a brake...
  11. jlcortex

    BESC - beefed up VESC motor controller for high power ebikes

    Hello Galp, I am interested in a couple of this PCBs Do you still have PCBs availables?
  12. jlcortex

    Build a 5m rotor diameter

    I just realized that the 12V hub motors are not very popular, but some items can be found: https://www.alibaba.com/product-detail/Brushless-Hub-Motor-12V_60612467592.html?spm=a2700.7724838.2017115.115.73b278a5MKzt68
  13. jlcortex

    Build a 5m rotor diameter

    Hillhater, I am meaning 12V hubmotor spinning at 5X the nominal speed so it will be 60V, rated current will be about 42A. The hub motor is a huge electric motor, the power is low because the RPM is very low, but I think nothing prevents the engine from spinning much faster than it does on a...
  14. jlcortex

    Build a 5m rotor diameter

    I like horizontal wind turbines. About hub motor, I see hub motors very simple, reliable and cheap. I am thinking about use a 500W 12V hub motor at 5X the nominal speed to get 2500W, it is very big motor, i think 2500W is not problem if it spin 5 times faster.
  15. jlcortex

    Build a 5m rotor diameter

    I'm thinking of starting a serious project In my opinion if you build a wind turbine you have to make it big, What do you think? Rotor diameter = 5m A 5m rotor can get more than 5000W but I would like to optimize for slow wind, about 6m/s, I am calculating 2500W or so. I am thinking to build...
  16. jlcortex

    small and light but powerful middrive?

    I will receive one of those kits next week, I have bought a 1680w kit and a 3000w with 60A Bluetooth controller. Perhaps i have to try the 60A controller with the 1680W motor How do you get 5000W with this motor? What current and voltage do you use? Which controller do you use?
  17. jlcortex

    small and light but powerful middrive?

    Hello, I am thinking about a powerful invisible middrive and i have found this product from GNG Electric. I think it is good idea, probably it is smaller, i am thinking about use RC helicopter brushless motors, this motors can get a power peak of about 6000W and a continuous 3000W (i have...
  18. jlcortex

    PARADOX KINETICS

    It is an interesting design to get very light and small mid drive with very big power output but someone knows if it has a planetary gearbox after primary belt drive? I mean i count this tooth ratios: 48:14 35:14 if there are no planetary gearbox between this then total gear ratio is only...
  19. jlcortex

    my ebike project, the cortex-bike 2.0!

    boisrondevens, Graphic explanation:
  20. jlcortex

    my ebike project, the cortex-bike 2.0!

    Wheazel: The geometry is inspired in several bikes, this suspension is similar to SantaCruz V10, I bought the linkage software, it is very interesting software, it is really fast to develop a suspension mechanism because you can draw the link points. This mechanism works very similar to...
  21. jlcortex

    my ebike project, the cortex-bike 2.0!

    (Reserved)
  22. jlcortex

    my ebike project, the cortex-bike 2.0!

    I want to build this, what do you think? The initial idea is a bike to make electric enduro. It is a bike similar to the steath B52, Vector, Qulbix Q76R, Bultaco Brinco. Neematic ... With respect to most of them the difference is to use middrive (neematic also uses middrive) and maintly I...
  23. jlcortex

    my ebike project, the cortex-bike!

    And the first pictures of the bike
  24. jlcortex

    my ebike project, the cortex-bike!

    Hello, I would like to show you my ebike project. It is based on a downhill bike with 20" rims. I started this project 2 years ago but it keeps stopped in a friend garage. A couple of days he call me on another matter and i told him to bring me the bike. I forgot than the bike was so finished...
  25. jlcortex

    custom 22kw outrunner for ultralight aricraft

    Thanks rolf_w, EMRAX seems a great product I have also asked EMRAX, 2400 is a reasonable price for well build axial flux 50kW (33kw continues) power motor. geigerengineering seems more expensive (comparatively) http://www.flytec.ch/e-drive/home.htm 10kW $2700 + drive $1680 + batteries!, 8kw =...
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