blockElectronicCommutator
Extends from Modelica.Blocks.Icons.BooleanBlock (Basic graphical layout of Boolean block).
Information
For every Hall signal uC[k]=true, the phasor exp(-j*orientation[k]) is added, else zero.
Taking the argument (angle) of the resulting phasor, the rotor position with an uncertainty of ±π/(2*m) is determined.
The fire signals are determined by comparing the rotor position is compared with the orientation of phases.
Phase(s) aligned with the rotor position (positive or negative) are set inactive (open).
Phases ahead +90° of the rotor position are connected with pwm,
phases behind -90° of the rotor position are connected with not pwm.
The signal pwm is either determined by the input, or set to the parameter ConstantPWM (determining the direction).
Note:
Phases with orientation within a span of ±π/(2*m) around rotorPosition±π/2 are choosen as active, the remaining as inactive (open).
The electronic commutator is working properly for odd number of phases, even number of phases nees further investigation.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | m | 3 | Number of stator phases |
| Modelica.Units.SI.Angle[m] | orientation | symmetricOrientation(m) | Orientation of phases |
| Boolean | useConstantPWM | true | Otherwise input |
| Boolean | ConstantPWM | true | PWM resp. direction |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.BooleanInput | pwm | ||
| Modelica.Blocks.Interfaces.BooleanInput[m] | uC | Commutation signals | |
| Modelica.Blocks.Interfaces.BooleanOutput[m] | fire_p | Fire signals of positive potential transistors | |
| Modelica.Blocks.Interfaces.BooleanOutput[m] | fire_n | Fire signals of negative potential transistors |