Complex circuitry of electronic infrastructure of compact micro-grids with multiple renewable energy sources feeding the loads using parallel operation of inverters acts as a deterrent in developing such systems. This paper deals with applicable techniques reducing the driving circuits in parallel power inverters used in micro-grid system (MGS), mainly focused on the distributed generation (DG)...

This Paper presents the Phase Disposition Scheme, which is topology independent. This scheme is used in Multilevel Inverters, interleaved parallel combination. Analysis on the other scheme which is Phase Opposition Disposition has also been performed. The best strategies related to the paralleling of inverters are evaluated, particularly those associated to current balancing between commutation...

This paper presents a new control scheme that permits flexible power sharing between parallel inverters connected to microgrid operating in an island mode. The presented processes the information of active and reactive output powers from all central controller calculates set points for each inverter, based on desired ratios their powers. These necessitate adjustment inverters’ terminal voltages...

The virtual synchronous generator (VSG) is a promising way to deal with the lack of physical inertia and damping introduced by power-electronic-based power supply system. However, characteristics may be complicated in paralleled VSG system due stiff grid interactions between control inverters. In this paper, dynamics parallel inverters VSGs studied. equivalent are derived analyzed detail consid...

In medium/high power applications, including smart transformers, active filters, and wind turbines, three-level neutral-point-clamped (NPC) inverters proved to be a reliable solution, providing high efficiency low harmonic distortion. practice, several NPCs are parallel connected operated in interleaved manner further increase the handling reduce line filters size. However, if such configuratio...

The approach of modular systems technology has now become generally accepted for the design of island grids with different renewable energy converters. This technology is characterised by a stipulated energy coupling (ac-bus bar 230/400 V, 50 Hz), a standardised information exchange and a supervisory control. These preconditions allow an adaptable and expandable system structure to be set up, t...

Conventional droop control is a basic control strategy for power sharing in islanded microgrid applications. This strategy has several limitations, such as low transient response, frequency and voltage deviations. This paper presents a modified droop control method for the proper operation of parallel-connected inverters in islanded microgrid. The proposed method is able to improve transient re...

Because of the acute shortage of conventional energy resources, renewable energy harness is gaining attention. Voltage source inverter forms the interface to feed the power from the renewable source to utility. In order to increase the modularity of the system, the use of several parallel inverters of reduced rating is preferred. An effective control strategy to maintain the amplitude and frequ...