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Figure 47: Current waveforms associated with: (top eight waveforms) Current output of each individual 200W interleaved inverter; (bottom waveform) Total current at the PCC. . The 3-phase bridge comprises 3 half-bridge legs (one for each phase; a, b, c). The devices are often traditionally numbered as illustrated (Conveying conduction order in “square wave” or “six step” operation, as is done for rectifers. ) For symmetry and convenience, we utilize the midpoint of the dc. . Therefore, this thesis aims to examine a PI control technique with different tuning methods to tune a PI controller for a 3-phase, 3-level ANPC inverter with an LC+EMI output filter. Develop a control system for a 3-level 4-wire active neutral point clamped (ANPC) inverter utilizing two interleaved. . urrent source inverter are shown in Figures 3. 2, respectively. e they share the same switching cells that are current unidirectional. The switching cells either inherently have ser es diodes, for example, GTOs, or have external series blocking diodes. The symbolic representation rrent. . This procedure can be applied to highly distributed energy systems such as photovoltaics, fuel-cells, and batteries with the following benefits: a very-low distortion ac output current; reduced filtering component requirements; higher efficiency; and miniaturization. For both the series and. . In this project various modulation techniques are proposed to analyse the performance of the inverter, minimize the output voltage THD, enhance the output voltage as well as eliminate the circulating current between the inverters that may flow as a result of their interaction. A three phase. . Abstract Parallel inverter is one of the most interesting topology to achieve high power level, overcame current limitation on the switching devices and also to enhance the output current waveforms. However, the circulating current results from the common connection of both AC and DC sides directly. .