This paper presents a new direct maximum power point tracking (MPPT) with reference voltage (Vref) based on the metaheuristic earthquake algorithm (EA) where optimization variable is Vref for hard-switching converters. The efficiency and performance of EA-MPPT-Vref compared perturb-and-observe (P&O) counterpart technique due to fact that it widely used commercial products. Static dynamic re...

This paper develops an adaptive control method for controlling frequency and voltage of an islanded mini/micro grid (M/µG) using reinforcement learning method. Reinforcement learning (RL) is one of the branches of the machine learning, which is the main solution method of Markov decision process (MDPs). Among the several solution methods of RL, the Q-learning method is used for solving RL in th...

The low-voltage ride-through service is carried out in this paper according to the voltage profile described by IEC 61400-21 European normative when short-duration sags happen, and some instantaneous reactive power delivered grid accordance with Spanish code; mandatory limitation of amplitude three-phase inverter currents its nominal value a novel control strategy, which certain amount constant...

Input-series-output-parallel (ISOP) connected DC-DC converters enable low voltage rating switches to be used in high voltage input applications. In this paper, a DSP is adopted to generate digital phase-shifted PWM signals and to fulfill the closed-loop control function for ISOP connected two full-bridge DC-DC converters. Moreover, a stable output current sharing control strategy is proposed fo...

The traditional VSG strategy does not consider the negative sequence component, which will lead to current imbalance and power oscillation under unbalanced voltage. Several improved control strategies of are usable for operating voltage nowadays. These usually require a complex PLL (phase-locked loop) detect components, reference generator convert references references. This paper proposes an V...

This paper focuses on improving the active and reactive power control of Wind Energy Conversion System (WECS) by employing the Battery Energy Storage System (BESS) and controlling the frequency and voltage regulation instantaneously. The proposed power control scheme is composed of two control loops so that they are implemented and designed for active power control and controlling the reactive ...