The growing use of EVs as an alternative means of mobility has increased the demand for energy and the need to implement efficient charging processes for their storage systems. Due to advantages such as operation under adverse weather conditions, the ability to operate in polluted environments, and the elimination of electrical contacts, wireless power transfer through inductive coupling has emerged as a practical solution for EV charging. In this work, a simple modeling methodology is proposed to approximate the charge dynamics of the storage system and to obtain analytical expressions for the design of integral controllers, aiming to reduce costs and implementation times. The proposed approach is validated through experimental results obtained from a 168 W laboratory prototype.

This work presents the analysis of a model predictive control, using the generalized predictive control (GPC) applied to a dc-dc boost converter powered by a photovoltaic panel and using a resistive load. The control objective consists in regulating the voltage of the photovoltaic panel to extract the maximum power under any possible solar irradiance and temperature conditions, which is accomplished using a maximum power point tracking (MPPT) algorithm along with the control system to ensure the accurate tracking of the reference. The prediction horizon of the GPC is selected based on the location of the poles of the system. Its performance is validated through both simulation and experimental results. A comparative analysis with a conventional PI controller is carried out to evaluate the performance of the GPC under different irradiance conditions.

This paper introduces a Power Electronic Converter (PEC) featuring a medium-frequency AC-link and a non-rectifier stage designed to connect photovoltaic (PV) modules to the grid while extracting the maximum power from the PV array. The proposed system incorporates a Battery Energy Storage System (BESS) to mitigate the effects of partial shading. A Three-Level Bidirectional Converter (3LBDC) has been adopted to facilitate battery charging. The 3LBDC converter exhibits minimal ripple in the inductor's current, maintaining the same inductance and frequency values consistent with a traditional boost converter. An Incremental Conductance algorithm is deployed as the Maximum Power Point Tracker (MPPT) on the boost converter, enabling the extraction of available power from the PV system and subsequent injection into either the grid or BESS as necessitated by the conditions. Simulated testing of the entire system indicates that it provides a viable solution for PV-ESS grid-tied applications.

The use of electric distributed power generation with renewable energy sources, has been increasing due to their advantages compared to the conventional fuel-based sources. An appropriate control strategy allows voltage and frequency regulation, supplying power directly to the near connected loads, improving power quality characteristics. In this sense it is possible to use optimization techniques to minimize the cost of the power generated, and supply the full power demanded by the load. In this work one optimization criteria is applied in a microgrid, achieving simulation results that takes into account the whole dynamics in a radial connected system, using power electronics converters detailed models and all control levels in the hierarchical control strategy. Hence the power generated by grid-feeding converters is optimal to reduce the operating cost of the microgrid, taking advantage of the reactive power regulation capability provided by the controllers to improve the system performance parameters and the efficiency.

Current Source Converters (CSC) have specific applications fields like electrolysis processes, induction furnaces, link for Super Magnetic Energy Storage and network support under fault-conditions. Many other applications such as the connection of renewable energy sources to the grid and active power filters could benefit from the CSC properties. The converter discussed in this paper is the Current Multilevel Rectifier (CMR) topology with a modular structure, and the aim is to present a study and methodology to ease the use of the CMR converter. Therefore, the study presents the component sizing for the converter, the equations that describe the behavior of the system under restricted operation area, and a control strategy based on passivity techniques is proposed.

This article presents the analysis of a single-phase Back-to-Back converter with a generalized parallel structure, in order to manage bidirectional active power flow between two AC systems. The considered topology is formed by single-phase cells coupled magnetically through a power transformer. The main strategy to operate the converter is to distribute the active power flow symmetrically between the n cells in the parallel arrangement. Also, the parallel structure is used to compensate the reactive power independently at each AC system. The proposed converter is validated through simulation, considering a power structure of 30 kVA, with three parallel cells.

In this paper a gain scheduling control scheme is presented for a three-level three-phase voltage source converter for high-voltage direct-current transmission system (VSC-HVDC), based on two neutral point clamped (NPC) converters in Back-to-Back configuration. The proposed model in dq0 is developed in detail and it has the advantage over other solutions of facilitating the mathematical analysis. Then a direct power control for the entire VSC-HVDC system, based on the dq0 model, is proposed where the control tasks are assign as follow: one NPC-VSC controls the active power flow, the other one regulates the dc voltage level, both converters have the capability to control the flow of active power. Additionally, a closed loop to minimize the voltage imbalance is defined and placed at each NPC-VSC in order to mitigate the imbalance at both system sides in a independently way. After that, a gain scheduling scheme is presented which has the ability to well assign new compensator tuning parameters considering system states as scheduling variables, solving an important neutral point clamped topology weakness. Finally, in order to test the control performance, a detailed computer simulation is implemented in PSCAD/EMTDC software.