Performance Analysis of 4-Leg IB APF for 3-Phase 4-Wire System with Renewable Energy Interface Fuzzy Control DC-Bus Capacitor

This paper proposes the 4-leg active power filter (APF), which consists of interleaved buck inverter interfaced with the photovoltaic (PV) renewable energy source. The photovoltaic renewable energy system along with the boost converter associated with the 4-leg interleaved buck active power filter (4L IB APF) is not only for harmonic compensation but can well handle the active power requirement during the load hike. The most perilous shoot-through phenomenon associated with the conventional 4-leg inverter is fully eliminated by this 4-leg interleaved buck inverter enhancing the reliability. The id-iq control strategy is used for the reference compensating current generation. Along with this, Mamdani-based fuzzy logic controller (MFLC) is implemented for the well control of inverter dc-bus capacitor voltage for having more sensitivity to harmonics, unbalancing and dynamic condition. The detail analysis of harmonic, neutral current, load unbalancing and active power compensation has depicted for nonlinear three-phase and single-phase unbalanced load for different voltage condition during steady and dynamic state. MATLAB/Simulation and OPAL real-time simulator results verify the efficacy and feasibility of the photovoltaic renewable energy-based 4L IB APF

Proton exchange membrane fuel cell modules for ship applications

In this article, we proposed a more reliable architecture composed of five fuel cell modules (FC), a storage system composed of battery and supercapacitor was also proposed to support the operation of the fuel cell. The main objective of this work is to study the feasibility of using the global system for small marine applications. In this paper, the global system was modeled and then simulated using Matlab/Simulink. The fuel cell is used as the main power source; each fuel cell is connected with a DC bus via a DC–DC boost converter. The Energy Storage System (HESS) is controlled as a fast-bidirectional auxiliary power source, it contains a battery and supercapacitors and each source is connected to the DC bus via a bidirectional buck-boost DC–DC converter (BBDCC). In order to optimize the HESS, the supercapacitors and the batteries are designed to allow high-efficiency operation and minimal weight. The entire system’s energy management algorithm (PMA) is developed to satisfy the energy demand of the boat. Finally, simulation tests are presented in Matlab/Simulink and discussed, where the effectiveness of the proposed system with its control is confirmed.N/