Your input dc voltage should be 311, 220v is rms, 311 is vmax, 1.414*220=311

I will try to answer you question. Let's assume that you have an 16 poles PM (8N and 8S) with a 12 teeth fractional-slot stator. Phase A will be wind at avec 90° displacement starting at 0°. Phase B will start at 30° and also have a 90° displacement each coils and finally, stator coil for phase C will start at 60° with its 90° displacement. If you align one of the N poles of the rotor to one coil of phase A, 4 of other N poles of rotor will also be facing the 3 other remaining to coils of phase A. All other PM poles will align more or less to the closes coils B and C. If you rotate manually the rotor, the same 4 N poles of the rotor will align to all coils B and so on. Lets puts some numbers, each PMs are distributed evenly at 22.5° (360/16 = 22.5 °). You have 12 teeth on the stator, each stator teeth will be displaced every 30°. If you have 3-phase motor , then 12 tooth / 3-phase = 4 coils for each phase. 360° / 4 poles/phase = 90° displacment between each coils of phase A, the gois for coils B and C. Hope it make sense. And 90° / 22.5° = 4 magnetic poles of the rotor will align with 4 coils A, or B or C of the respective phases. My point is that the FOC does not care if the rotor made a full turn. Since each coil of phase A are displaced at 90°, every 90° mechanical rotational displacement will equal a full electrique rotational revolution. However, the FOC needs to know where or at which angle the d-axis is, and for this, you need a shaft sensor the measure the angles or the back-EMF for sensorless angle detection. This datum is valuable to determine the speed (angular velocity - RPM, etc), the rotational angle for positionning for example or the angle of the d-axis as per phase. The last is needed with the currents of each phase for the CLARK transformer. With out this data, you have no FOC. Hope it help!

Similar but not the same, u get better utilisation of DC bus on both SVPWM AND 3rd har+SPWM ie 1.15 times that you get with Spwm , but harmonic performance is better with SVPWM

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