Index

About the project

  1. about this documentation in HTML
  2. License

Development tools

  1. Linux
    1. Step-by-step tutorial development tools
      1. Tools to build the firmware
        1. stm8-binutils-gdb
      2. Tools to flash the firmware
        1. How to erase and unlock protected read memory
      3. Hardware tools to flash and debug the firmware
      4. (optional) Tools do flash and debug the firmware
      5. (optional) Tools to debug using serial port
      6. (optional) Tools to see diffs on the source code
  2. Windows
  3. C library
  4. Other tools
    1. Battery voltage boost step-up converter

Motor controllers

  1. BMSBattery S series
    1. BMSBattery S06S
      1. S06ST (torque sensor version)
      2. S06S-BL (Bluetooth version)
      3. PWM signals
        1. very low speed - 6 steps
        2. low speed up to max speed - sineware
      4. Phase B current signal
      5. Throttle
    2. BMSBattery S12S
      1. Programming header
      2. PWM signal at max speed - sineware
      3. Phase B and motor total current signals
    3. BMSBattery bottle battery controller
    4. LCD control panel
      1. LCD protocol
    5. Bluetooh
      1. DIY Bluetooth module
    6. How to open the controller and solder the programming header
    7. Hardware mods
  2. Other controllers
    1. BMSBattery S06P
      1. various info
        1. 01
        2. 02
    2. Kunteng 18 mosfets motor controller
    3. Lishui motor controllers
      1. LSW-675
        1. Datasheets
        2. PWM signals
    4. JinHui motor controllers
  3. GreenEBikeKit

Motors

  1. BMSBattery Q75
  2. BMSBattery Q85
  3. BMSBattery Q100
  4. BMSBattery Q100C

Torque sensors

  1. BMSBattery torque sensor

Datasheets and application notes

  1. STM8S105C6T6
    1. Interrupts

Motor control

  1. Torque speed
  2. Motor control scheme of S06S controller
  3. BLDC 6 steps
  4. PWM schemes
    1. So, Which PWM Technique is Best? (Part 1)
    2. So, Which PWM Technique is Best? (Part 2)
    3. So, Which PWM Technique is Best? (Part 3)
    4. So, Which PWM Technique is Best? (Part 4)
    5. So, Which PWM Technique is Best? (Part 5)
    6. So, Which PWM Technique is Best? (Part 6)
    7. So, Which PWM Technique is Best? (Part 7)
  5. PWM control and Dead Time Insertion
  6. Low inductance motors
  7. Throttle Control Modes
  8. Phase angle FOC
  9. PWM frequency VS motor eRPM
    1. Max motor speed using FOC
    2. Kelly controllers ultra high speed
  10. Sinusoidal Control of BLDCM with Hall Sensors Based
  11. Self-Learn Hall Sensor Calibration Mode
  12. STM8S105 Alternatives
  13. Regeneration
    1. Regen in SimonK firmware

Various

  1. Endless-sphere.com forum messages
    1. 2017.04.25 - Initial forum message
    2. 2017.05.08 - First flash and debug on a dev board
    3. 2017.05.18 - First code flashing and running
    4. 2017.05.20 - more new information
    5. 2017.08.23 - SxxP versus SxxS versus LSW-675
    6. 2017.09.01 - Trying to figure out an algorithm to automatically adjust ui8_position_correction_value
    7. 2017.09.02 - How to do FOC on the BMSBattery S06S/Kunteng STM8 motor controllers
    8. 2017.09.03 - more ideas about zero crossing for FOC
    9. 2017.09.05 - measuring IQ current and manually adjusting position_correction_value
    10. 2017.09.15 - our OpenSource firmware efficiency compared to Lishui 12 FET FOC
    11. 2017.09.19 - measuring motor current
    12. 2017.10.23 - FOC and no FOC comparison
  2. STM8S003 board
  3. 2017.12.01 - Regen ebrake like coast brakes

Clipping

  1. 2017.05.22 - Hackaday Links: May 21, 2017

Smart BMS with bluetooth

PWM signals


PWM frequency
6 steps and sinewave
PWM low and high sides microcontroller signal
Negative side dead time
Positive side dead time


PWM frequency


PWM frequency is about 15.4kHz:
images/33-1.png

6 steps and sinewave


At start very low speed, the PWM LOW driver sides don't have PWM, just are HIGH or LOW. After this phase, the motor starts to run in Sine Wave and both PWM driver sides have PWM.
Sinewave commutation seems to happen at about ~30 erps, even if the motor has or not a load.
After entering in sinewave, will stay in that mode until motor stops, which may happens at very low speeds like 10 or less erps.
Is possible to see that Sine Wave is drive by SVM (Space Vector Modulation).

PWM low and high sides microcontroller signal


• the low side have a positive polarity and as also the high side
• the low side signal is about 800ns + 800ns larger than high side signal

• yellow: TIM1_CH2N
• blue: TIM1_CH2
images/33-2.png

images/33-3.png

images/33-4.png


Negative side dead time


• about 1us rise time
• about 0.12us fall time

• yellow: TIM1_CH2N
• blue: phase voltage

images/33-5.png

images/33-6.png


Positive side dead time


• about 1us rise time
• about 0.7us fall time

• yellow: TIM1_CH2
• blue: phase voltage

images/33-7.png

images/33-8.png

images/33-9.png