| Title |
A Study on the Output Noise Reduction of 3-Phase 3-Level Inverter |
| Authors |
Soo-Hong Kim ; Kang-Hwan Jin ; Yoon-Ho Kim |
| Keywords |
NPC 3-level inverter; Output filter; Harmonic reduction |
| Abstract |
This paper proposes a current control scheme of the PWM converters under nonideal source voltage conditions such as unbalance and distortion. For the distorted source voltage, the harmonic current controllers are introduced to the conventional current controller. These control loops can eliminate the 5th and 7th order harmonics which are hardly to be done by using filters. For the unbalanced source voltage, a negative sequence current controller is introduced either to reduce the DC-link voltage ripples or to eliminate the source current unbalance. Experimental results show the validity of the proposed control scheme. |