This is illustrated by Fig. However, the parallel operation off inverter functioning is complicated, all the parallel inverters should be synchronised; otherwise, the inverters would be strained, and the system will collapse, resulting in a power outage [5, 6]. Harmonic impedance is used to find the harmonic contribution by each source. Zheng Y, Smedley KM Analysis and design of a single-switch high step-up coupledinductor boost converter. Parallel inverter technology improves inverter operating reliability in distributed generation systems and high-frequency modular UPS systems.
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