Test Motor Characteristics
- Rotor moment of inertia for 10g shell of 5mm radius: 0.00000025 Kg*m^2.
- Forward diode voltage Vds = 0.72V (up to 1V); body-diode can withstand 4A continuous current.
- Continuous drain current 8.5A (at high ambient temperature 70C).
- Drain source ON resistance 18mΩ.
- Phase winding resistance 1.3Ω (2.6Ω across 2 phases).
- Shunt resistance 10mΩ.
- Driver turn on propagation delay ~300ns.
- Driver turn off propagation delay ~100ns.
- Driver automatic deadtime ~200ns.
- Phase inductance 0.1mH (0.2mH across 2 phases).
References
- Understanding the effect of PWM when controlling a brushless dc motor: https://www.controleng.com/articles/understanding-the-effect-of-pwm-when-controlling-a-brushless-dc-motor/
- Jantzen Lee - The Physics behind how motors work. Understanding motors (Episode 1): https://www.youtube.com/watch?v=EHYEQM1sA3o&list=PLaBr_WzeIAixidGwqfcrQlwKZX4RZ2E7D&pp=iAQB
- Texas Instruments - Field Oriented Control of Permanent Magnet Motors: https://www.youtube.com/watch?v=cdiZUszYLiA
- Clarke transformation: https://en.wikipedia.org/wiki/Alpha–beta_transformation
- Direct-quadrature-zero transformation: https://en.wikipedia.org/wiki/Direct-quadrature-zero_transformation
- Coordinate Transform in Motor Control (shows the math workings to get the unitary Clarke transform): https://www.infineon.com/dgdl/Infineon-AN205345_Coordinate_Transform_in_Motor_Control-ApplicationNotes-v03_00-EN.pdf?fileId=8ac78c8c7cdc391c017d0cff06bb58ed
- 3-Phase PM Synchronous Motor Torque Vector Control Using 56F805: https://www.nxp.com/docs/en/reference-manual/DRM018.pdf
- PMSM Permanent magnet synchronous motor with sinusoidal flux distribution: https://uk.mathworks.com/help/sps/ref/pmsm.html
- Electromotive forceL https://en.wikipedia.org/wiki/Electromotive_force
- Counter-electromotive force: https://en.wikipedia.org/wiki/Counter-electromotive_force
- Magnetic flux https://en.wikipedia.org/wiki/Magnetic_flux
- Magnetic flux density (magnetic field): https://en.wikipedia.org/wiki/Magnetic_field
- Magnetic moment https://en.wikipedia.org/wiki/Magnetic_moment
- Faraday induction law: https://en.wikipedia.org/wiki/Faraday's_law_of_induction
- Solenoid: https://en.wikipedia.org/wiki/Solenoid