Research Article
Research on the Comparison Analyses of Three-Phase Discrete and Integrated LC Filters in Three-Phase PV Inverter
Table 2
The comparison of the discrete magnetics, five-limb magnetics, and three-limb magnetics.
| | The number of magnetic core | The cross section area of middle limb | Air gap distribution | Inductance | The number of turns | The max flux density |
| Discrete filter inductor | Three EE96/48/32 | 1024 mm2 | The air gap of middle limb is 2.0 mm; the air gaps of the other limbs are zero | Self-inductance is 3.8 mH | 80 | 0.33 T | Integrated filter inductor (five limbs) | Two EE96/48/32 | 1024 mm2 | The air gaps of middle three limbs are 2.0 mm; the air gaps of the other two limbs are zero | Self-inductance is 3.8 mH | 80 | 0.33 T | Integrated filter inductor (three limbs) | One EE96/48/32 | 1024 mm2 | The air gap of middle limb is 1.4 mm; the air gaps of the other limbs are 0.7 mm | Self-inductance is 3.8 mH; mutual inductance is 1.9 mH | 80 | Middle limb is 0.17 T; the other two limbs are 0.33 T |
|
|