scholarly journals Design and Hardware Implementation of an IGBT-Based Half-Bridge Cell for Modular Voltage Source Inverters

Electronics ◽  
2021 ◽  
Vol 10 (20) ◽  
pp. 2549
Author(s):  
Roberto Morales-Caporal ◽  
José F. Pérez-Cuapio ◽  
Haydee P. Martínez-Hernández ◽  
Raúl Cortes-Maldonado
Keyword(s):  
Hardware Implementation ◽  
Printed Circuit Board ◽  
High Efficiency ◽  
International Standards ◽  
Circuit Board ◽  
Voltage Source ◽  
Voltage Source Inverters ◽  
Power Cell ◽  
Three Phase ◽  
Grid Interconnection

This article presents the design and hardware implementation of an IGBT-based half-bridge voltage source inverter (VSI) to be used as a basic cell to assemble VSIs of different topologies in modular ways. Herein, we have presented the design methodology and utilized techniques for reducing stray inductances and EMI radiation on the printed circuit board, as well as the way to calculate and select the main electronic components. For the design of the circuit board, local regulations for grid interconnection and international standards were considered in order to obtain a safe and reliable electronic power cell. The developed hardware was subjected to different tests using AC electric motors as loads to validate its design. Two VSIs topologies were evaluated: a single-phase two-level full-bridge inverter and a three-phase two-level inverter. The experimental results validated the theory and demonstrated the excellent performance, reliability, and high efficiency of the developed half-bridge power cell for modular VSIs.

Hierarchical Control Scheme for Droop Controlled Parallel Three Phase Voltage Source Inverters in Low Voltage AC MicroGrid

2016 ◽  
Vol 9 (5) ◽  
pp. 279 ◽  
Author(s):  
El Hassane Margoum ◽  
Nissrine Krami ◽  
Luis Seca ◽  
Carlos Moreira
Keyword(s):  
Low Voltage ◽  
Hierarchical Control ◽  
Voltage Source ◽  
Phase Voltage ◽  
Voltage Source Inverters ◽  
Three Phase ◽  
Control Scheme ◽  
Ac Microgrid

scholarly journals Design Analysis of a Mobile-Based Gait Analyzer

2019 ◽  
Vol 3 (3) ◽  
Author(s):  
Adedotun Oluwakanyinsola Owojori ◽  
Ibukunoluwa A. Adebanjo ◽  
Samson A. Oyetunji
Keyword(s):  
Hardware Implementation ◽  
Printed Circuit Board ◽  
Dielectric Material ◽  
Circuit Board ◽  
Printed Circuit ◽  
Uniform Distance ◽  
Pressure Mapping ◽  
Short Period ◽  
Mapping Technology ◽  
Processing Circuit

Considering a system capable of identifying abnormalities in people's walking conditions in real-time, simply by studying his/her walking profile over a short period of time is a phenomenal breakthrough in the field of biotechnology. Such abnormalities could be as a result of injury, old age, or disease termed gait which could be analyzed using the pressure mapping technology. Pressure points in the feet of an injured person as he/she walks is analyzed by sets of sensors (capacitive sensors) carefully design with a rectangular 5.1cm by 2cm parallel aluminium plate and placed on developed footwear with a uniform distance of 1cm across the dielectric material. The output of the pre-processing stage gives varying values which are calibrated and sent to the microcontroller. All placed on a portable sized Printed Circuit Board (PCB) making it moveable from one place to another (that is, mobile), is the pre-processing circuit that converts measured or evaluated result to the transmittable signal through a Mobile Communication System which can be received on a Personal Computer (PC) in form of a periodic chat and/ or report. The result of the analysis is shown both in simulation and hardware implementation of the system

Design and Implementation of a Power Cell for Assembling Modular Voltage Source Inverters

2021 ◽  
Author(s):  
Roberto Morales-Caporal ◽  
Jose Francisco Perez-Cuapio
Keyword(s):  
Voltage Source ◽  
Voltage Source Inverters ◽  
Design And Implementation ◽  
Power Cell

Virtual Ground Fence: A Simple Method for Protection against High Frequency Simultaneous Switching Noise

2012 ◽  
Vol 2012 (1) ◽  
pp. 001081-001084 ◽  
Author(s):  
Jesse Bowman ◽  
A. Ege Engin
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Power Efficiency ◽  
Printed Circuit Board ◽  
Supply Voltage ◽  
Circuit Board ◽  
Voltage Source ◽  
Accurate Estimation ◽  
Simple Method ◽  
Power Distribution System

When integrating sensitive RF analog devices with complex VLSI digital components, simultaneously switching drivers cause supply voltage fluctuations which can propagate both horizontally and vertically between the power/ground planes. The same voltage source on a printed circuit board can be shared to increase power efficiency and reduce space used. In order to accomplish this, on board filtering is needed to isolate the noise between these two types of devices for proper operation. Hence, accurate estimation and improvement of the performance of power/ground planes is critical in a mixed-signal system. We present a new method to minimize the noise transfer at high frequencies to the power distribution system, called the Virtual Ground Fence. At its basic level, the Virtual Ground Fence consists of quarter-wave transmission-line stubs that act as short circuits between power and ground planes at their design frequency. We will present various configurations of Virtual Ground Fence for different coupling scenarios.

scholarly journals Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems

Electronics ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 521 ◽  
Author(s):  
Naser Ojaroudi Parchin ◽  
Haleh Jahanbakhsh Basherlou ◽  
Mohammad Alibakhshikenari ◽  
Yasser Ojaroudi Parchin ◽  
Yasir I. A. Al-Yasir ◽  
...  
Keyword(s):  
Mobile Phone ◽  
Antenna Array ◽  
Massive Mimo ◽  
Printed Circuit Board ◽  
High Efficiency ◽  
Mimo Systems ◽  
Circuit Board ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Diamond Ring

A design of mobile-phone antenna array with diamond-ring slot elements is proposed for fifth generation (5G) massive multiple-input/multiple-output (MIMO) systems. The configuration of the design consists of four double-fed diamond-ring slot antenna elements placed at different corners of the mobile-phone printed circuit board (PCB). A low-cost FR-4 dielectric with an overall dimension of 75 × 150 mm2 is used as the design substrate. The antenna elements are fed by 50-Ohm L-shaped microstrip-lines. Due to the orthogonal placement of microstrip feed lines, the diamond-ring slot elements can exhibit the polarization and radiation pattern diversity characteristic. A good impedance bandwidth (S11 ≤ −10 dB) of 3.2–4 GHz has been achieved for each antenna radiator. However, for S11 ≤ −6 dB, this value is 3–4.2 GHz. The proposed design provides the required radiation coverage of 5G smartphones. The performance of the proposed MIMO antenna design is examined using both simulation and experiment. High isolation, high efficiency and sufficient gain-level characteristics have been obtained for the proposed MIMO smartphone antenna. In addition, the calculated total active reflection coefficient (TARC) and envelope correlation coefficient (ECC) of the antenna elements are very low over the whole band of interest which verify the capability of the proposed multi-antenna systems for massive MIMO and diversity applications. Furthermore, the properties of the design in Data-mode/Talk-mode are investigated and presented.

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