Waner Wodson A. G. Silva - IEEE Xplore Author Profile

Showing 1-11 of 11 results

Filter Results

Show

Results

This paper aims to present the computational implementation of a photovoltaic generating unit integrated with an energy storage system using Lithium-ion batteries connected on grid. The system under analysis aims to control the power factor at the PCC (Point of Common Coupling), as well as regulate the load demand curve. For this, the control of the inverter and the dc/dc converters of the photovo...Show More
This article aims to present the necessary steps for the design and construction of a three-phase frequency inverter to drive low-power induction motors. Most induction motors in the industry are driven by frequency inverters and the rated performance characteristics are specified for the rated voltage and frequency of the machine. Initially, the development of the power, control, drive and signal...Show More
This article proposes a distributed secondary level control strategy for dc microgrids, which achieves accurate and proportional power sharing and dc-bus voltage deviation restoration based on voltage shifting. In contrast to similar approaches, only one variable per converter is transmitted in the low-bandwidth communication link and with a simple integrator as the secondary level controller both...Show More
A hybrid ac/dc microgrid combines the benefits of ac and dc power systems. It provides high efficiency and is compatible with conventional ac distribution network. This article proposes a centralized energy management approach to perform coordinated control on a hybrid ac/dc microgrid as a single-controllable entity. The central controller relies on low-bandwidth communication channels and is aime...Show More
Low-voltage dc distribution systems have gained significant attention over the last years, since they provide simpler and more efficient integration of distributed generators and storage devices, establishing a pathway to net zero energy buildings. In low-power units, transformerless utility interface is preferred to reduce footprint and losses. However, the lack of galvanic isolation introduces a...Show More
DC microgrid applications normally use Distributed Energy Storage Systems (DESS) to smooth out energy balance due to the non-dispatchable characteristics of renewable resources. Since the State of Charge (SoC) of each energy storage unit (ESU) can differ significantly SoC based adaptive droop control methods for SoC equalization has been proposed in literature. A droop compensation function is use...Show More
The contribution of this paper has been focused on investigating a new microgrid architecture that integrates the electronic transformer (SST, the acronym Solid State Transformer) with microgrids system. The design of the converters required for implementation of the electronic transformer are dealt. The work to provide an infrastructure for creating an intelligent energy system, which will enable...Show More
This paper presents a laboratory scale implementation of an AC Chopper Soft-Starter topology for Three Phase Induction Motors, which was designed to be used in power quality and in power electronics didactical laboratories, as a project proposal for students from electrical engineering and from control engineering. The issue of costs was considered as a constraint, most of the components were chos...Show More
The usage of electrical energy generation with alternative sources is increasing significantly, due to the general concern about the environment and generation with nonrenewable sources. This fact encourages the development of technologies and new researches, to come up with solutions to allow the connection the new systems to the grid in a safe and trustable way. This work presents the project an...Show More
This article proposes the analysis of the quality of the power provided by two commercial photovoltaic inverters. Initially the inverters are analyzed based on the recent regulations, afterwards the equipment is compared based in the measurement of the distortion rates and power factor during the analyzing period.Show More
This paper discusses the application of a dual active bridge converter (DAB) as a bidirectional interface between the energy storage system and the main dc bus in a dc nanogrid. A novel control technique based on control loops competition is proposed to perform the energy management between both systems, which allows the dual active bridge to concomitantly regulate the main dc bus and control the ...Show More