Improving a no-failure operation of a PV systems with grid inverters for agricultural regions

The growing interest to the use of power generating complexes based on renewable energy sources has been witnessed recently. It necessitates the need to improve the no-failure operation of such complexes. The highest failure rate is typical for the string inverter in grid-connected PV systems. The failure of the string inverter induces supply termination of electrical energy to the grid. The paper explores an approach to improve the no-failure operation of the process of electrical energy distribution by a PV system to the grid driven by the use of micro inverters. The authors used the logical-probabilistic method to assess the no-failure operation of the PV system. Thus, the authors obtained the expressions to calculate the probability of failure for PV systems, enclosing a string inverter, and micro inverters.