Changes for delta motor?? - Use of "space vector modulation" ,"phase Voltage calc32" and "ACI Motor" blocks
I have a small question using "space vector modulation", "phase Voltage calc32" and "ACI Motor" blocks etc with delta (or triangle) connected motors.
- Are these block designed for star connected motors alone? Or can they be used for delta motors too?
- If they can be used for delta motors too, then can these blocks be used directly or should we add some extra blocks to transform from star to delta ?
- Also, in ACI motor block, can one use delta parameters or should one use equivalent star paramters?
The reason for this question is because: mag(spaceVector_delta) = sqrt(3)* mag(spaceVector_star)and phase(spaceVector_delta) = 30° + phase(spaceVector_star)
Example: For IGBT switching sequence 001 (i.e. branch A and B = Bottom IGBT ON and branch C = Top IGBT ON),
For delta winding: Phase voltages (Ua, Ub, Uc) = (0, -Udc, +Udc ) ; mag(spaceVector) = (2/sqrt(3)) * Udc and phase(spaceVector) = 270°
For star winding: Phase voltages (Ua, Ub, Uc) = (-1/3 Udc, -1/3 Udc, +2/3 Udc ) ; mag(spaceVector) = (2/3) * Udc and phase(spaceVector) = 240°