In this paper, the performance of wireless operation of four-leg parallel inverters, at the presence of unbalanced nonlinear loads, is investigated. In order to control the parallel inverters, an inner current and external voltage control loops should be designed. In this paper, a proportional controller for the current internal loop as well as a proportional-resonant one for the voltage extern...

In this paper wind and solar based stand-alone hybrid energy system is presented for the remote area power system applications. The wind, solar, battery, fuel cell and dump load (i.e., aqua-electrolyzer) are connected to the common dc bus. An ac load is connected to dc bus through a pulse width modulation (PWM) based inverter. Ac voltage at load bus can be maintained at rated value by regulatin...

, Abstract: This paper proposes a combined fuzzy adaptive slidingmode voltage controller (AFTSMC) for a three-phase UPS inverter. The proposed AFTSMC encapsulates two control terms: a fuzzy adaptive compensation control term, which solves the problem of parameter uncertainties, and a sliding-mode feedback control term, which stabilizes the error dynamics of the system. To extract precise load c...

Small-signal models are mostly used to model and design inverter-dominated microgrids. Conversely, this article proposes a large-signal for grid-forming inverters connected microgrid based on the active reactive power dynamic equations. In work, it is proposed use nonlinear develop constrained predictive control microgrid. The main features of follows: first, direct voltage (in amplitude freque...

This paper presents the integration of renewable energy sources such as photovoltaics, wind, and batteries to grid. The hybrid shunt active power filter (HSHAPF) is optimized with Gray wolf optimization (GWO) fractional order proportional integral controller (FOPI) for harmonic reduction under nonlinear unbalanced load conditions. With use GWO, parameters FOPI are tuned, which effectively minim...

Shunt capacitive compensation is one of the techniques used to improve the voltage profile of the system and reduce active power loss. In this paper Index Vector method is implemented for optimal capacitor placement on three phase unbalanced radial distribution system. Mutual inductance between the phases is taken into consideration for obtaining load flow solution of unbalanced distribution sy...

In this paper control of Goertzel Algorithm based shunt active power filter with sliding mode controller is considered. Shunt active power filter involves harmonics mitigation due to three phase non linear loads under balanced and unbalanced load conditions. The sliding mode controller is used to regulate voltage of the capacitor used in inverter. The sliding mode controller improves the dynami...