This research paper focuses on the three-phase HF double active bridge DC/DC converter with a boost structure$(3\phi-\text{DAB}$-Boost) at the input. This converter is widely used in various applications, including fuel cell, hybrid, and electric vehicles. The converter comprises of two distinct stages, namely an inverter and a rectifier, which are connected via a HF planar transformer, providing a galvanic isolation and a voltage adaptation. The Single-Phase Shift (SPS) strategy is employed to control the power transfer by providing control signals for the output-side bridge switches relative to those on the input side one. The converter has many advantages, including its compact size, high efficiency, wide input voltage range, and high voltage gain. Due to its high-frequency operation, the components used in this converter can be made smaller in size while maintaining high efficiency. In addition, the wide input voltage range and high voltage gain provide flexibility in design and allow for use in a variety of applications. The paper provides a detailed description of the converter's modeling and control. Simulations were conducted using Matlab/Simulink software to validate its operation for variable phase shift angles (PSA). The results show that the converter has excellent performance and can be used effectively in various applications.

In this paper, the static and the transient performance of the wind energy conversion system based on an aero-generator with a permanent magnet synchronous machine (PMSM) which is connected to an electrical network through an indirect matrix converter (IMC) is investigated and analysed. The wind system control is incorporated two combined techniques, such as: the field-oriented control (FOC) for the wind-turbine PMSM side, and using an MPPT algorithm, to capture the maximum wind power and also to supply the necessary references quantities for the (FOC-SVM) controller to drive the rectifier of the IMC converter. On another hand, for the electrical grid side, we are adopted the model predictive current (MPC) to command the inverter of the is IMC. The main goal of this strategy is to generate the reference currents for the MPC controller under the constraint of the supplied current by the PMSM generator, and also it is to inject the active power into the electrical network with a unity power factor (UPF). The control strategy adopted for the overall wind system which is validated by numerical simulations using “Matlab/Simulink” software. The results show the dynamic responses with good accuracy and excellent performance, justifying the effectiveness of the technique exposed to control the IMC converter integrated in a wind energy system.

This research consists on the study and control of the bidirectional 3-ph high frequency double active bridge (Bi-3φDAB) DC/DC converter. The sort of these converters is utilized in renewable energy system, also it is appropriate for some applications such as the automotive and avionic applications. This last comprises of two power stages which are isolated whereby three 1-ph high frequency transformers in expect to offer an insulation betwixt the two ports. To manage the power transmission between the two terminals, a phase shift angle is presented between the two power stages. This system features a minimum input current ripples due to its three-phase construction and the high frequency operation, as well as the benefit of the reduced volume and size. Also, this converter presents an important voltage elevation and a large dimming range for the input voltage, as well as a significant efficiency. The operation of the Bi-3φDAB will be explained in this paper and simulation results using MATLAB/SIMULINK will be provided to prove the converter topology's operation. Finally, detailed analysis and examination will be done.

In this paper an unidirectional high-frequency ac-link PV-inverter used as an interface between a photovoltaic panel and three phase ac-load will be studied in more detail. This converter belongs to a group of power converters in which the link is formed by a parallel inductance/capacitor. The inductance stores energy from the input and it discharges through the output. The link capacity has the role of soft-switching during both turn-on and turn-off of the switches Because of its variety of configuration this category of converter is named “universal”: inputs and outputs can be ac or dc, mono-phase or multiphase and two-ports or multi-ports. These converters have several advantages over the other types of converters that make them an excellent choice for use in renewable energy systems in standalone and grid-connected applications and for use in electric and hybrid-electric vehicles. Compared with other topologies, these ac-link converters are compact, reliable, efficient, they guaranty longer lifetime and can be used for bidirectional power flow. In this paper, the principles of operation of the ac-link PV-inverter will be clearly explained and simulations results under MATLAB/SIMULINK will be shown to validate the operation of the converter topology. Finally, detailed analysis will be carried out.