scholarly journals Efficient Performance Technical Selection of Positive Buck-Boost Converter

2018 ◽  
Vol 2 (2) ◽  
pp. 20-38
Author(s):  
Ahmed Abbas ◽  
Abadal-Salam Hussain
Keyword(s):  
Pulse Width ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Input Voltage ◽  
Boost Converter ◽  
Dc Voltage ◽  
Voltage Polarity ◽  
Efficient Performance ◽  
Efficient Power ◽  
Selection Of

The necessity for stable DC voltage in both removable and non-removable systems has been considerably desired recently. These systems have to be implemented efficiently in order to be responding rapidly based voltage variations. Under this act, the efficient power can extend the lifetime of the employed batteries in such systems. The presented efficiency can be realized with respect to buck and boost components that were implemented to generate what is called positive Buck-Boost converter circuits. The main functions of the positive Buck-Boost converter are identified by announcing the unchanged situation of output voltage polarity and indicating the level of the voltage rationally between the input and the output. It is worth mention, the positive Buck-Boost converter circuit was simulated based Proteus software, and the hardware components were connected in reality. Finally, the microcontroller type that employed in the proposed system is PIC_16F877A, which realizes the input voltage sensitively to generate Pulse Width Modulation (PWM) signals in order to feed the employed MOSFET element.

scholarly journals Analysis and implementation of electricity generation of 1000VA using wind turbine

2020 ◽  
Vol 39 (2) ◽  
pp. 472-483
Author(s):  
A.A. Okandeji ◽  
M.B. Olajide ◽  
Z.O. Jagun ◽  
D.S. Kuponiyi ◽  
T.A. Aderanti
Keyword(s):  
Magnetic Field ◽  
Wind Turbine ◽  
Pulse Width ◽  
Electricity Generation ◽  
Output Voltage ◽  
Design Work ◽  
Discharge Characteristics ◽  
Dc Voltage ◽  
Pulse Width Modulated ◽  
Selection Of

The project involved the design and construction of a three-blade wind turbine, selection of generator by consideration of the available wind speed and the maximum generated voltage per revolution, and assembly of the pulse width modulated inverter with microontroller based status display and low battery shutdown system. On completion of the work, tests were conducted and the result shows that the design work was very good, the output of the generator was good enough to charge the batteries and the inverter performed an excellent task of converting the direct current (DC) voltage available in the battery to alternating current (AC) at 230V 50Hz 20”. Furthermore, results from the discharge characteristics of the battery shows that as the battery is being used up, the output voltage remains constant. Keywords: wind, blade, turbine, magnetic field, battery, oscillator, inverter, controller

scholarly journals Implementation of 5-Level H-Bridge Inverter with Multicarrier based Modulation Techniques

2020 ◽  
Vol 8 (5) ◽  
pp. 5180-5185
Keyword(s):  
Pulse Width ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Reference Signal ◽  
Low Frequency ◽  
Harmonic Spectrum ◽  
Multilevel Inverter ◽  
Modulation Method ◽  
Dc Voltage ◽  
Modulation Technique

Paper Setup must be in A4 size with Margin: Top In the present paper multi carrier sinusoidal modulation technique which is an efficient method of producing control signals is used for a symmetrical inverter with several levels in cascade H Bridge is discussed. The Cascaded H-Bridge performance output levels depend on the DC voltage sources used at the input side. With the help of two DC voltage sources, five level output can be obtained whereas three sources gives levels of seven in output voltage. In this paper, multi-carrier SPWM switching is obtained for switching of multilevel inverter based switches. Two signals are used in this switching method, among which one of the signals is reference which is a low frequency sinusoidal signal and the one is a carrier signal. In case of sinusoidal PWM method of modulation technique, the reference signal is a sinusoidal one and triangular signal can be used as a carrier signal. These types of inverters have the ability to generate inverted output voltage with an efficient harmonic spectrum and reliable output results. This document provides switching signal for H-bridge inverter structure which can improve harmonic performance. The 5-level multilevel inverter is simulated for traditional carrier-based pulse-width modulation (PWM) phase change carrier techniques. The total harmonic performance of the output voltages is analyzed for the two PWM control methods. The performance of the symmetrical PWM CHB is simulated using MATLAB-SIMULINK model. Model results show that THD can be minimized to a limit with level shifted modulation method of the sinusoidal pulse width. The results from the simulations show that the quality of the waveform of the output voltage improves with less loss and with a lower THD.

New Selective Harmonic Elimination-Pulse-Width Modulation for Cascaded H-bridge Multilevel Inverters

2018 ◽  
Vol 19 (5) ◽  
Author(s):  
Piyush L. Kamani ◽  
Mahmadasraf A. Mulla
Keyword(s):  
Real Time ◽  
Pulse Width ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Experimental Studies ◽  
Equal Area ◽  
Multilevel Inverters ◽  
Harmonic Elimination ◽  
Selective Harmonic Elimination ◽  
Selection Of

AbstractThis paper presents a univariate equation-based selective harmonic elimination-pulse-width modulation (USHE-PWM) method for cascaded H-bridge (CHB) multilevel inverters (MLIs). Using equal-area criteria, the selection of voltage rating of dc-links have been done. The output voltage is controlled by inserting switching notch at the centre of each level of output voltage. Instead of conventional transcendental SHE-PWM equations, all these calculations are accomplished using univariate equations. This simplifies the real-time implementation of the proposed method greatly, even for the MLI with a large number of levels. The USHE-PWM method can eliminate more harmonics compared with the conventional SHE-PWM methods. While controlling the output voltage, the harmonic pattern remains unaffected. The validity of the proposed method is confirmed by the simulation and experimental studies.

scholarly journals Modeling, Control and Design of DC-DC Boost Converter for Grid Connected Photo-Voltaic Applications

2012 ◽  
pp. 260-264
Author(s):  
Suneel Raju Pendem ◽  
Bidyadhar Subudhi
Keyword(s):  
Output Voltage ◽  
Pulse Width Modulation ◽  
Sliding Mode ◽  
Input Voltage ◽  
Boost Converter ◽  
Linear Feedback ◽  
Feedback Controllers ◽  
Control Switch ◽  
Modulation Signal ◽  
Constant Output

This article presents a design and development method of a DC-DC boost converter with constant output voltage. This system has a nonlinear dynamic behavior, as it works in switch-mode. Moreover, it is exposed to significant variations which may take this system away from nominal conditions, due to changes on the load or on the line voltage at the input. From a fluctuating or a variable input voltage, boost converter is able to step up the input voltage to a higher constant dc output voltage using the Non-linear feedback controllers such as PID controller and the Sliding Mode controllers. By this technique, the output of the converter is measured and compared with a reference voltage. The differential of the compared value will be used to produce a pulse width modulation signal to control switch in the boost converter. Simulation results describe the performance of the proposed design.

scholarly journals Implementasi DC-DC Boost Converter Menggunakan Arduino Berbasis Simulink Matlab

2020 ◽  
Vol 1 (2) ◽  
pp. 144-149
Author(s):  
Muldi Yuhendri ◽  
Randy Setiawan
Keyword(s):  
Direct Current ◽  
Output Voltage ◽  
Input Voltage ◽  
Voltage Regulation ◽  
Power Converter ◽  
Boost Converter ◽  
Experimental Results ◽  
Voltage Source ◽  
Matlab Simulink ◽  
Dc Voltage

Direct current (dc) voltage sources are one of the voltage sources most widely used for various purposes. Dc voltage can be obtained from a dc generator or by converting an ac voltage into a dc voltage using a power converter. There are several dc voltage levels that are commonly used by electrical and electronic equipment. To get a dc voltage that can be used for various equipment, then a dc voltage source must be varied according to the required. One way to get a variable dc voltage is to use a dc-dc converter. This research proposes a dc-dc boost converter that can increase the dc voltage with varying outputs. The boost converter is proposed using Arduino Uno as a controller with an input voltage of 12 volts. The converter output voltage regulation is implemented through Arduino programming using Matlab simulink. The experimental results show that the boost converter designed in this study has worked well as intended. This can be seen from the boost converter output voltage which is in accordance with the reference voltage entered in the Matlab simulink program

scholarly journals Symmetrical Cascaded Switched-Capacitor Multilevel Inverter Based on Hybrid Pulse Width Modulation

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7643
Author(s):  
Lingling Cao ◽  
Jiefeng Lin ◽  
Shikai Chen ◽  
Yuanmao Ye
Keyword(s):  
Pulse Width ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Reactive Power ◽  
Input Voltage ◽  
Industrial Applications ◽  
Multilevel Inverter ◽  
Switching Frequency ◽  
Switched Capacitor ◽  
Cascaded Multilevel Inverter

Multilevel inverters have been widely used in various industrial applications such as renewable energy generation and electric vehicles. An improved circuit of symmetrical cascaded switched-capacitor multilevel inverter is proposed so that the reactive power is absorbed by its power supply instead of capacitors. Then, a special hybrid pulse width modulation strategy combing level-shifted pulse width modulation (LS-PWM) and phase-shifted pulse width modulation (PS-PWM) was developed for the inverter. With this modulation algorithm, the power between cascaded units is automatically balanced, and the voltage of the capacitor in each unit is also automatically balanced to the dc input voltage. In addition, the optimized capacitor voltage ripple makes it possible to use a smaller capacitor to produce a better output voltage waveform. Theoretical analysis, simulation and experimental results show that the equivalent switching frequency of the cascaded multilevel inverter is twice the original frequency so that the output voltage harmonics are only distributed near even multiples of the carrier frequency.

scholarly journals Design of Boost Converter Integrated with Graphical User Interface

2020 ◽  
Vol 2 (1) ◽  
pp. 31-42
Author(s):  
Sesrima Badri ◽  
Krismadinata Krismadinata
Keyword(s):  
User Interface ◽  
Graphical User Interface ◽  
Pulse Width ◽  
Output Voltage ◽  
Input Voltage ◽  
Boost Converter ◽  
Control Circuit ◽  
Input And Output ◽  
Several Variables

This article discusses the design of a Boost type of DC-DC converter with a monitoring GUI. The increase in the output voltage of the converter is done by adjusting the pulse width (PWM). Change the size of the PWM is done by using a switching component in the form of MOSFETs, as well as the use of a gate drive that serves as a signal and security reinforcement between the control circuit and its main circuit. The input voltage of the converter is designed at 12VDC, with an output voltage of 12VDC-24VDC. In this study the GUI was successfully added to display several variables such as voltage (Volt), current (Ampere), as well as graphs of the input and output voltage of the boost converter. GUI monitoring of the converter can be viewed via a PC using Visual Studio 2012 software. Artikel ini membahas tentang perancangan sebuah rangkaian konverter DC-DC tipe Boost (penaik tegangan) dengan GUI monitoring. Kenaikan tegangan keluaran dari konverter dilakukan dengan mengatur lebar pulsa (PWM). Pengubahan besar kecilnya PWM dilakukan dengan meggunakan komponen switching berupa MOSFET, serta penggunaan gate drive yang berfungsi sebagai penguatan sinyal dan pengaman antara rangkaian kontrol dan rangkaian utamanya. Tegangan masukan dari konverter dirancang sebesar 12VDC, dengan tegangan keluaran 12VDC-24VDC. Dalam penelitian ini GUI berhasil ditambahkan untuk menampilkan beberapa variabel seperti tegangan (Volt), arus (Ampere), serta grafik tegangan masukan dan keluaran dari konverter boost. GUI monitoring dari konverter dapat dilihat melalui PC menggunakan software Visual Studio 2012.

scholarly journals Caracterización del método SVPWM con inversor trifásico de dos niveles

2019 ◽  
pp. 22-29
Keyword(s):  
Pulse Width ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Input Voltage ◽  
Good Choice ◽  
Voltage Source ◽  
Voltage Source Inverter ◽  
Matlab Simulink ◽  
Wide Range

Caracterización del método SVPWM con inversor trifásico de dos niveles Juan Tisza1, 2, Javier Villegas2 1Universidad Nacional de Ingeniería, Av. Túpac Amaru 210, Rímac, Lima Perú 2Universidad Nacional Mayor de San Marcos, Ciudad Universitaria, Lima, Perú Recibido 17 de junio del 2019, Revisado el 17 de julio de 2019 Aceptado el 19 de julio de 2019 DOI: https://doi.org/10.33017/RevECIPeru2019.0005/ Resumen Las cargas en Corriente Alterna (CA) requieren voltaje variable y frecuencia variable. Estos requisitos se cumplen con un inversor de fuente de voltaje (VSI). Se puede lograr un voltaje de salida variable variando la tensión de CC de entrada y manteniendo constante la ganancia del inversor. Por otro lado, si la tensión de entrada CC es fija y no es controlable, se puede lograr una tensión de salida variable variando la ganancia del inversor, lo que normalmente se logra mediante el control de modulación por ancho de pulso dentro del inversor. Hay varias técnicas de modulación de ancho de pulso, pero la técnica de vector espacial es una buena opción entre todas las técnicas para controlar el inversor de fuente de voltaje. La modulación por ancho de pulso de vector espacial (SVPWM) es un método avanzado y muy popular con varias ventajas tales como la utilización efectiva del bus de CC, menos generación de armónicos en voltaje de salida, menos pérdidas de conmutación, amplio rango de modulación lineal, etc. En este documento, se ha tomado un inversor de fuente de voltaje constante CC y se ha implementado la SVPWM para VSI de dos niveles utilizando MATLAB / SIMULINK. Descriptores: Modulación de ancho de pulso (PWM), modulación de ancho de pulso de vector espacial (SVPWM), distorsión armónica total (THD), inversor de fuente de voltaje (VSI). Abstract Alternating Current (AC) loads require variable voltage and variable frequency. These requirements are met by a voltage supply inverter (VSI). A variable output voltage can be achieved by varying the input DC voltage and keeping the inverter gain constant. On the other hand, if the DC input voltage is fixed and not controllable, a variable output voltage can be achieved by varying the gain of the inverter, which is normally achieved by controlling the pulse width modulation within the inverter. There are several pulse width modulation techniques, but the spatial vector technique is a good choice among all the techniques for controlling the voltage source inverter. Spatial vector pulse width modulation (SVPWM) is an advanced and very popular method with several advantages such as effective utilization of CC bus, less harmonic generation in output voltage, less switching losses, wide range of linear modulation, etc. In this document, a CC constant voltage source inverter has been taken and SVPWM has been implemented for two-level VSI using MATLAB / SIMULINK. Keywords: Pulse Width Modulation (PWM), Space Vector Pulse Width Modulation (SVPWM), Total Harmonic Distortion (THD), Voltage Source Inverter (VSI).

scholarly journals Design and Implementation of PV Z source Inverter Topology

2019 ◽  
Vol 9 (1) ◽  
pp. 4391-4395
Keyword(s):  
Pulse Width ◽  
Output Voltage ◽  
Analytical Approach ◽  
Pulse Width Modulation ◽  
Boost Converter ◽  
Design And Implementation ◽  
Cascade Connection ◽  
Modulation Techniques ◽  
Pv Modules ◽  
Inverter Topology

Photovoltaic energy is one of the ruling area due to it’s easy availability and pollution free nature. At the same time the voltage from the PV is needed to be stepped up for different load requirements. There are various pulse width modulation techniques for the control of impedance Source inverter(ZSI).Here we have considered Carrier based various PWM techniques for PV-ZSI Converter. The proposed converter consists of cascade connection of PV Modules and Conventional-ZSI which provides higher boosting factor and smaller size than that of existing VSI .The performance of inverters depend on the type of modulation technique used to switch them. This work depicts a detailed analytical approach in MATLAB/Simulink platform as well hardware consists of sine triangle PWM method for proposed new topology PV-ZSI. It has been observed output voltage of proposed inverter is more in comparison to conventional VSI. As the proposed inverter is lesser in size and output voltage is greater so it is more efficient than conventional VSI. There is no requirement of Boost converter .

scholarly journals Design of Boost Inverter for Solar Power Based Stand Alone Systems

2019 ◽  
Vol 8 (6S) ◽  
pp. 125-129
Keyword(s):  
Pulse Width ◽  
Output Voltage ◽  
Main Part ◽  
Pulse Width Modulation ◽  
Power Conversion ◽  
Research Work ◽  
Input Voltage ◽  
Voltage Source ◽  
Inverter Circuit ◽  
Conversion Stage

This paper presents a new ideology called as boost inverter which converts input DC supply into AC directly without using any filter circuit. The main part of today’s research work is to use solar energy efficiently. While using for AC autonomous loads, the output from the solar panel should not suffer any losses during the various power conversion stages. The conventional voltage source inverter, which is currently in usage, produces an AC output voltage lower than the DC input supply and thus it requires another power conversion stage. It can be used to drive the loads only after removing the ripples using a filter. The main objective of the project is to produce an AC output voltage higher than the DC input voltage in a single stage. Thus the number of power conversion stages is reduced by using boost inverter circuit. Since Pulse Width Modulation technique is used to drive the circuit, the requirement of a filter at the output is not needed

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