scholarly journals Design and Simulation of MPPT Control for Solar Powered AC Autonomous LED Lighting Applications in MATLAB/Simulink Environment

2020 ◽  
Vol 9 (4) ◽  
pp. 177-183
Keyword(s):  
Single Phase ◽  
Pulse Width Modulation ◽  
Sine Wave ◽  
Boost Converter ◽  
Main Concept ◽  
Light Industry ◽  
Matlab Simulink ◽  
Led Lighting ◽  
Wide Range ◽  
Office Lighting

As an AC LED light applications have become a commonplace item of light industry, it has a wide range of usage in garden lighting, cove lighting, office lighting and retail applications. The paper brings out the utilization of Boost converter along with Maximum Power Point Tracker (MPPT) technique for the control of Photovoltaic power. This proposed system which includes Boost converter, a single phase full bridge inverter with Sinusoidal Pulse Width Modulation (SPWM) technique. The main concept of this converter includes designing of boost converter that provides an output voltage of 350V DC and single phase SPWM provides 350V, pure sine wave output (230V RMS) applicable to AC autonomous LED Lighting system. In order to bring out a transformer free inverter, the designed boost converter is simulated in the MATLAB Simulink software and the results are shown with low THD as per IEEE standard, with acceptable power factor and higher efficiency.

scholarly journals Development and implementation of two-stage boost converter for single-phase inverter without transformer for PV systems

2020 ◽  
Vol 10 (1) ◽  
pp. 660
Author(s):  
Basem E. Elnaghi ◽  
Mohamed E. Dessouki ◽  
M. N. Abd-Alwahab ◽  
Elwy E. Elkholy
Keyword(s):  
Pulse Width ◽  
Single Phase ◽  
Pulse Width Modulation ◽  
Sine Wave ◽  
Boost Converter ◽  
Innovative Technology ◽  
Two Stage ◽  
Phase Inverter ◽  
Pv Systems ◽  
Single Phase Inverter

This paper offers a two-stage boost converter for a single-phase inverter without transformer for PV systems. Each stage of the converter is separately controlled by a pulse width modulated signal. A Simulink model of the converter using efficient voltage control topology is developed. The proposed circuit performance characteristics are explained and the obtained simulation results are confirmed through the applied experiments. Moreover, this paper has examined the control circuit of a single-phase inverter that delivers a pure sine wave with an output voltage that has the identical value and frequency as a grid voltage. A microcontroller supported an innovative technology is utilized to come up with a sine wave with fewer harmonics, much less price and an easier outline. A sinusoidal pulse width modulation (SPWM) technique is used by a microcontroller. The developed inverter integrated with the two-stage boost converter has improved the output waveform quality and controlled the dead time as it decreased to 63 µs compared to 180 µs in conventional methods. The system design is reproduced in Proteus and PSIM Software to analyze its operation principle that is confirmed practically.

scholarly journals MPPT-Based Single Phase Solar String Inverter

2021 ◽  
Vol 9 (VII) ◽  
pp. 3639-3643
Author(s):  
Pervala Arundhathi
Keyword(s):  
Pulse Width ◽  
Single Phase ◽  
Pulse Width Modulation ◽  
Low Cost ◽  
Sine Wave ◽  
Low Energy ◽  
The Sun ◽  
Major Goal ◽  
Energy Factor ◽  
Digital Home

A microcontroller primarily based totally method of producing a sine wave from the sun panel output is designed and carried out on this paper the usage of a two-degree topology for a sun string inverter. This paper offers the improvement of a most energy factor tracking (MPPT) and manipulate circuit for a unmarried section inverter the usage of a pulse width modulation (PWM) IC. The elegance of this configuration is the removal of a complicated circuitry to generate oscillation pulses for transistor switches. The controller IC TL494 is capable of generate the vital waveforms to manipulate the frequency of inverter via right use of switching pulse. The DC to AC inversion is correctly completed along the switching signals; the circuit produced inverter output of frequency almost 50 Hz. The major goal of the proposed method is to layout a low cost, low harmonics voltage supply inverter basically targeted upon low energy digital home equipment the usage of variable sun energy as inputs.

scholarly journals Implementation of SHE-PWM technique for single-phase inverter based on Arduino

2021 ◽  
Vol 11 (4) ◽  
pp. 2907
Author(s):  
Laith A. Mohammed ◽  
Taha A. Husain ◽  
Ahmed M. T. Ibraheem
Keyword(s):  
Output Voltage ◽  
Single Phase ◽  
Pulse Width Modulation ◽  
Practical Implementation ◽  
Half Cycle ◽  
Voltage Waveform ◽  
Pwm Inverter ◽  
Phase Inverter ◽  
Wide Range ◽  
Single Phase Inverter

This paper presents design and practical implementation of single-phase inverter based on selective harmonic elimination-pulse width modulation (SHE-PWM) technique. Microcontroller mega type Arduino used as a controller for producing the gate pulses. The optimized switching angles determination results in wide range of output voltage. Depending on number of switching angles, the lower order harmonics (LOHs) can be eliminated to improve the output voltage waveform. A comparison study using MATLAB/Simulink for sinusoidal-PWM and SHE-PWM techniques, which shows for the same LOH in the output voltage waveform, the SHE-PWM has less number of pulses per half cycle than sinusoidal-PWM strategy. The reduction in number of pulses results less switching losses. The simulation done using ten switching angles to drive R-L load. A prototype of SHE-PWM inverter with R-L load is used to validate the simulation results.

scholarly journals Hardware implementation of single phase three-level cascaded h-bridge multilevel inverter using sinusoidal pulse width modulation

2019 ◽  
Vol 10 (2) ◽  
pp. 625
Author(s):  
A. Shamsul Rahimi A. Subki ◽  
Mohd Zaidi Mohd Tumari ◽  
Wan Norhisyam Abd Rashid ◽  
Aiman Zakwan Jidin ◽  
Ahmad Nizammuddin Muhammad Mustafa
Keyword(s):  
Pulse Width ◽  
Output Voltage ◽  
Single Phase ◽  
Hardware Implementation ◽  
Pulse Width Modulation ◽  
Sine Wave ◽  
Multilevel Inverter ◽  
Square Wave ◽  
Output Waveform ◽  
Sinusoidal Pulse Width Modulation

<span lang="EN-US">In this paper a hardware implementation of single-phase cascaded H-bridge three level multilevel inverter (MLI) using sinusoidal pulse width modulation (SPWM) is presented. There are a few interesting features of using this configuration, where less component count, less switching losses, and improved output voltage/current waveform. The output of power inverter consists of three form, that is, square wave, modified square wave and pure sine wave. The pure sine wave and modified square wave are more expensive than square wave. The focus paper is to generate a PWM signal which control the switching of MOSFET power semiconductor. The sine wave can be created by using the concept of Schmitt-Trigger oscillator and low-pass filter topology followed by half of the waveform will be eliminated by using the circuit of precision half-wave rectifier. Waveform was inverted with 180º by circuit of inverting op-amp amplifier in order to compare saw-tooth waveform. Two of PWM signal were produced by circuit of PWM and used digital inverter to invert the two PWM signal before this PWM signal will be passed to 2 MOSFET driver and a 3-level output waveform with 45 Hz was produced. As a conclusion, a 3-level output waveform is produced with output voltage and current recorded at 22.5 Vrms and 4.5 Arms. The value of measured resistance is 0.015 Ω that cause voltage drop around 0.043 V. Based on the result obtained, the power for designed inverter is around 100W and efficiency recorded at 75%.</span>

scholarly journals Direct Usage of Photovoltaic Solar Panels to Supply a Freezer Motor with Variable DC Input Voltage

Electronics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 167
Author(s):  
Ali Farzan Moghaddam ◽  
Alex Van den Bossche
Keyword(s):  
Leakage Current ◽  
Single Phase ◽  
Pulse Width Modulation ◽  
High Efficiency ◽  
Input Voltage ◽  
Boost Converter ◽  
Solar Panels ◽  
Pv Inverter ◽  
Pv Panel ◽  
Grid Connection

In this paper, a single-phase photovoltaic (PV) inverter fed by a boost converter to supply a freezer motor with variable DC input is investigated. The proposed circuit has two stages. Firstly, the DC output of the PV panel that varies between 150 and 300 V will be applied to the boost converter. The boost converter will boost the input voltage to a fixed 300 V DC. Next, this voltage is supplied to the single-phase full bridge inverter to obtain 230 V AC. In the end, The output of the inverter will feed a freezer motor. The PV panels can be stand-alone or grid-connected. The grid-connected PV is divided into two categories, such as with a transformer and without a transformer, a transformer type has galvanic isolation resulting in increasing the security and also provides no further DC current toward the grid, but it is expensive, heavy and bulky. The transformerless type holds high efficiency and it is cheaper, but it suffers from leakage current between PV and the grid. This paper proposes a stand-alone direct use of PV to supply a freezer; therefore, no grid connection will result in no leakage current between the PV and Grid. The proposed circuit has some features such as no filtering circuit at the output of the inverter, no battery in the system, DC-link instead of AC link that reduces no-loads, having a higher efficiency, and holding enough energy in the DC-link capacitor to get the motor started. The circuit uses no transformers, thus, it is cheaper and has a smaller size. In addition, the system does not require a complex pulse width modulation (PWM) technique, because the motor can operate with a pulsed waveform. The control strategy uses the PWM signal with the desired timing. With this type of square wave, the harmonics (5th and 7th) of the voltage are reduced. The experimental and simulation results are presented to verify the feasibility of the proposed strategy.

The wide range of output frequency regulation method for the inverter using the combination of PWM and DDS

2019 ◽  
Vol 38 (4) ◽  
pp. 1323-1333 ◽  
Author(s):  
Wojciech Pietrowski ◽  
Wojciech Ludowicz ◽  
Rafal Marek Wojciechowski
Keyword(s):  
Single Phase ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Low Frequency ◽  
Modulation Method ◽  
Frequency Regulation ◽  
Content Type ◽  
Output Waveform ◽  
Wide Range ◽  
Single Phase Inverter

Purpose The specific modulation methods are used to control different kind of single-phase, as well as three-phase, inverters to ensure flexibility and high quality of the output waveform. This paper aims to present a combination of two classical methods, namely, pulse width modulation method and direct digital synthesis modulation method. Design/methodology/approach The total harmonic distortion of output waveforms of single-phase inverter based on elaborated modulation method has been determined by means of fast Fourier transform analysis. Tests have been carried out by using standard low-frequency application and also a wireless resonant energy link system. Findings Applying appropriate timer parameters of microcontroller enables to obtain a waveform for given output parameters (amplitude, frequency, frequency modulation index, etc.). The only limitation is the computing power of a microcontroller. Originality/value The elaborated method can be successfully used in both low- and high-frequency application ensuring high level of output waveform quality. Additional signal generators and the control of amplitude modulation ratio are no longer indispensable, what simplify immensely a control system.

scholarly journals A novel multilevel inverter with reduced switch count

2019 ◽  
Vol 8 (3) ◽  
pp. 171
Author(s):  
C. R. Balamurugan ◽  
K. Vijayalakshmi
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Simulation Analysis ◽  
Sine Wave ◽  
Multilevel Inverter ◽  
Matlab Simulink ◽  
Triangular Waveform

<p><span>This paper presents a multilevel inverter with reduced number of switches to produce a five level output. PWM technique (pulse width modulation) has been used to trigger the MLI switches. It gives reduced harmonic. This proposed topology is connected with R-load and RL-load. Four signals are generated for switching on the multilevel inverter (MLI) switches by comparing four level triangular waveform with sine wave. In this proposed topology two switches are reduced from the conventional Cascaded five level inverter. The simulation analysis has been done by MATLAB/SIMULINK.</span></p>

scholarly journals Modeling and simulation of DC to DC boost converter using single phase matrix converter topology

2020 ◽  
Vol 11 (2) ◽  
pp. 774
Author(s):  
Fajariah Kadir ◽  
S.Z. Mohammad Noor ◽  
Faranadia A.H. ◽  
K.S. Muhammad
Keyword(s):  
Single Phase ◽  
Pulse Width Modulation ◽  
Input Voltage ◽  
Boost Converter ◽  
Matrix Converter ◽  
Switching Frequency ◽  
Resistive Load ◽  
Insulated Gate Bipolar Transistor ◽  
Voltage Spike ◽  
Four Quadrant

The main objective of this work is to model and simulate DC to DC Boost Converter using Single Phase Matrix Converter (SPMC) topology using MATLAB/Simulink (MLS). The output voltage is controlled by using Pulse Width Modulation (PWM) technique. Four pairs of Insulated Gate Bipolar Transistor (IGBT) is used as the switching device where for each pair, it is located in parallel and opposite direction. Safe commutation technique is performed in preventing voltage spike at the output. Through the simulation, at switching frequency of 25kHz, the model is able to step up its input voltage about two times larger and all of the results achieved a good agreement with the principle of four quadrant operation. It is also realized that without the implementation of safe commutation technique, spikes were generated and the model is unable to boost its input voltage. All of the selected results from the analysis which includes variation of quadrant, switching frequency, duty cycle and resistive load are presented in this paper.

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