Active Power Decoupling 회로를 갖는 스위칭 셀 전류형 인버터

초록

This study proposes a single-phase switching-cell (SC) current source inverter (CSI) that uses the active power decoupling (APD) technique. The proposed CSI exhibits the SC structure, and thus, the APD technique can be implemented by adding one P-cell (switch, diode, and capacitor). It attenuates an undesirable low-frequency ripple power transferred from the AC side and has a DC-link inductor with small inductance. In addition, it implements the SC structure to minimize overlap time and eliminate the arm-open problem, improving the quality of output waveforms. The control scheme is easy to implement because the APD circuit is controlled independently from the output side. Detailed analysis and experimental results are provided to verify the performance of the proposed CSI.

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