diff --git a/motor/README.md b/motor/README.md new file mode 100644 index 0000000..b60e1b5 --- /dev/null +++ b/motor/README.md @@ -0,0 +1,23 @@ +# Motor Research +The research for better motor tech. We will be comparing between different kinds of motors in order to gain a better understanding of them. +### Priorities +- **Efficiency**: Current efficiency range (70/87%), goal (90-95%), efficiency is measured in output power (rpm/torque) per watt. +- **Reliability**: Withstand a long duration of high throttle and extreme conditions of weather. + +## BLDC vs PMSM +| Feature | **BLDC (Brush-less DC Motor)** | **PMSM (Permanent Magnet Synchronous Motor)** | +| ------------------------ | -------------------------------------- | ----------------------------------------------- | +| **Rotor** | Permanent magnets | Permanent magnets | +| **Stator winding** | Trapezoidal | Sinusoidal | +| **Back-EMF waveform** | Trapezoidal | Sinusoidal | +| **Control** | Typically 6-step (commutation) | Field-Oriented Control (FOC) / sinusoidal | +| **Torque ripple** | Higher (due to 6-step commutation) | Lower (smooth sinusoidal control) | +| **Efficiency (general)** | Slightly lower | Slightly higher | +| **Cost and complexity** | Lower cost, simpler control | Higher cost, more complex control | +| **Applications** | Fans, RC planes, e-bikes, hobby motors | EVs, drones, industrial drives, high-end motors | + +## BLDC - Brush-less DC motor +BLDC motor + +## PMSM - Permanent Magnet Synchronous Motor +PMSM motor \ No newline at end of file diff --git a/motor/images/bldc.png b/motor/images/bldc.png new file mode 100644 index 0000000..6fa06a7 Binary files /dev/null and b/motor/images/bldc.png differ diff --git a/motor/images/pmsm.png b/motor/images/pmsm.png new file mode 100644 index 0000000..9a0683f Binary files /dev/null and b/motor/images/pmsm.png differ