scholarly journals A grid interconnected nested neutral-point clamped inverter with voltage synchronization using synchronous reference frame controller

2021 ◽  
Vol 10 (4) ◽  
pp. 364
Author(s):  
Sirisha Bogimi
Keyword(s):  
Reference Frame ◽  
Pulse Width Modulation ◽  
Neutral Point ◽  
Maximum Power Point ◽  
Simulink Model ◽  
Synchronous Reference Frame ◽  
Power Injection ◽  
Voltage Stress ◽  
Power Point ◽  
Sinusoidal Pulse Width Modulation

<p><span lang="EN-US">Nested neutral-point clamped multi level inverter with inter connection to grid through the synchronous reference frame (SRF) controller for synchronization of voltage to the grid is demonstrated. The system's main feature is that voltage stress in each inverter switching device is kept to a minimum, and redundant inverter switching states are utilised for neutral point and flying capacitor voltage balancing with sinusoidal pulse-width modulation (PWM) technique, synchronisation to grid voltages, and power injection with low harmonic generation. The inverter receives its input from a photovoltaic (PV) source that is coupled to DC-DC booster converters that are regulated by the maximum power point <span lang="EN-US">(MPP)</span> tracking incremental conductance algorithm to maintain a constant dc voltage. The system is examined under various load conditions with MATLAB/Simulink model.</span></p>

scholarly journals A grid interconnected nested neutral point clamped inverter with voltage synchronization using synchronous reference frame controller

2021 ◽  
Vol 10 (4) ◽  
pp. 362
Author(s):  
Sirisha Bogimi
Keyword(s):  
Reference Frame ◽  
Pulse Width Modulation ◽  
Neutral Point ◽  
Point Tracking ◽  
Simulink Model ◽  
Power Point Tracking ◽  
Synchronous Reference Frame ◽  
Power Injection ◽  
Power Point ◽  
Sinusoidal Pulse Width Modulation

<p><span lang="EN-US">Nested neutral point clamped multi level inverter with inter connection to grid through the synchronous reference frame (SRF) controller for synchronization of voltage to the grid is demonstrated. The system's main feature is that voltage stress in each inverter switching device is kept to a minimum, and redundant inverter switching states are utilised for neutral point and flying capacitor voltage balancing with sinusoidal pulse-width modulation (PWM) technique, synchronisation to grid voltages, and power injection with low harmonic generation. The inverter receives its input from a photovoltaic (PV) source that is coupled to DC-DC booster converters that are regulated by the maximum power point tracking (MPPT) incremental conductance algorithm to maintain a constant dc voltage. The system is examined under various load conditions with MATLAB Simulink model.</span></p>

scholarly journals Inverter 5-Tingkat Tiga Fasa Empat Kawat menggunakan STM32F407 untuk Catu Daya Mandiri

2021 ◽  
Vol 9 (1) ◽  
pp. 177
Author(s):  
IVANILES PUTRA UTAMA DAGOMIS ◽  
LEONARDUS HERU PRATOMO
Keyword(s):  
Pulse Width Modulation ◽  
Power Converter ◽  
Maximum Power ◽  
Switching System ◽  
Maximum Power Point ◽  
Maximum Power Point Tracker ◽  
Three Phase ◽  
Power Switches ◽  
Power Point ◽  
Sinusoidal Pulse Width Modulation

ABSTRAKSalah satu energi terbarukan adalah pembangkit listrik tenaga surya (PLTS), yang menggunakan photovoltaic (PV) sebagai sarana konversi energi. Untuk mendapatkan daya maksimal, menggunakan konverter DC-DC beralgoritma maximum power point tracker (MPPT). Sistem di Indonesia menggunakan tiga fasa empat kawat (TFEK), sehingga sistem perlu diintegrasi menjadi satu, dikenal dengan nama konversi dua tahap. Masalah yang muncul adalah konverter TFEK lazim diimplementasi menggunakan konverter daya empat lengan, di mana setiap lengannya terdapat dua buah sakelar daya. Hal ini akan mengakibatkan sistem pensaklaran yang tinggi, tapis dan stress tegangan yang besar untuk mendapatkan THD rendah. Oleh karena itu, telah diteliti inverter TFEK menggunakan 5-level inverter. Metode modulasi lebar pulsa digital sinusoidal (MLPDS) digunakan untuk mengendalikan setiap sakelar (IRFP 460) dengan menggunakan mikrokontrol jenis STM32F407. Verifikasi menggunakan perangkat lunak PSIM dan prototype. Berdasarkan hasil pengujian, metode yang dilakukan mampu menghasilkan arus dan tegangan keluaran inverter TFEK dengan THD tegangan sebesar 4,38%.Kata kunci: Inverter 5-tingkat, Tiga fasa empat kawat, STM32F407, THD ABSTRACTOne of the renewable energy is solar power plant (PLTS), which uses photovoltaic (PV) as a means of energy conversion. To get maximum power, use a DC-DC converter with a maximum power point tracker (MPPT). The system in Indonesia uses three-phase four-wires (TPFW), the system needs to be integrated into one, as two-stage conversion. The problem is that TPFW converters are commonly implemented using four-leg power converter, where each leg has two power switches. This will result in high switching system, large filters, and stress voltage to get low THD. Hence, the TPFW inverter 5-level inverter has been investigated. The sinusoidal pulse width modulation (SPWM) method is used to control each switch (IRFP 460) using an STM32F407 microcontroller. Verification with PSIM software and prototype. Based on the results, the method used can produce the current and output voltage of the TPFW inverter with a voltage THD of 4.38%.Keywords: five-level inverter, three-phase four-wire, STM32F407, THD

scholarly journals Design and Simulation of a Single Phase Four Level Neutral Point Clamped Inverter

2019 ◽  
Vol 8 (2) ◽  
pp. 5285-5287
Keyword(s):  
Normal Mode ◽  
Pulse Width ◽  
Single Phase ◽  
Pulse Width Modulation ◽  
Reference Signal ◽  
Neutral Point ◽  
Half Cycle ◽  
Adjustment Strategy ◽  
Four Levels ◽  
Sinusoidal Pulse Width Modulation

In this paper, sinusoidal pulse width adjustment strategy for single stage four levels neutral point clamped inverter is proposed disposed of normal mode voltage. Sinusoidal pulse width modulation is much of the time utilized in modern applications. The gating sign are created by contrasting a sinusoidal reference signal and a triangular bearer sign of recurrence. The quantity of heartbeats per half-cycle relies upon the transporter recurrence

scholarly journals Performance comparison between PWM and MPPT charge controllers

2019 ◽  
Vol 24 (1) ◽  
pp. 6 ◽  
Author(s):  
Sergio Basilio Sepulveda Mora ◽  
Eduardo Andrés Luna Paipa ◽  
Miguel Angel Laguado Serrano ◽  
Luis Fernando Bustos Márquez
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Maximum Power Point Tracking ◽  
Performance Comparison ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Para Determinar ◽  
Power Point

Los controladores de carga son implementados en varios sistemas electrónicos con el objetivo de proteger y controlar la carga y descarga de una batería; en el caso de los controladores utilizados en sistemas fotovoltaicos autónomos se implementan dos tipos de tecnologías, Pulse Width Modulation (PWM) y Maximum Power Point Tracking (MPPT). En este artículo se compararon dos controladores de carga con diseños originales en sistemas fotovoltaicos con las mismas especificaciones técnicas para determinar el comportamiento de cada uno bajo condiciones ambientales similares. La implementación de ambos controladores de carga se basó en software y hardware con diseños originales, utilizando tecnología PWM y MPPT. Ambos sistemas están compuestos por el controlador de carga, un panel solar de 30 W y una batería de 12 V a 18 Ah; se realizaron las pruebas experimentales de ambos controladores midiendo voltaje y corriente en el panel y en la batería en procesos de carga y descarga, observando que el controlador MPPT tiene una eficiencia promedio mayor que el controlador PWM debido a que el tipo de tecnología implementada influye directamente en la eficiencia, incluso ante valores menos favorables de radiación solar y temperatura ambiente. El controlador PWM es una opción de eficiencia aceptable y además de bajo costo respecto al controlador MPPT. En la implementación de ambos controladores se calcularon tiempos de autonomía similares.

scholarly journals A Single-Stage Buck-Boost Three-Level Neutral-Point-Clamped Inverter with Two Input Sources for the Grid-Tied Photovoltaic Power Generation

2017 ◽  
Author(s):  
Xuefeng Ge ◽  
Feng Gao ◽  
Mengxing Chen
Keyword(s):  
Power Generation ◽  
Neutral Point ◽  
Single Stage ◽  
Maximum Power Point ◽  
Operational Conditions ◽  
Pv Array ◽  
Pv Inverter ◽  
Photovoltaic Power ◽  
Control Scheme ◽  
Power Point

This paper proposes a novel single-stage buck-boost three-Level neutral-point-clamped (NPC) inverter with two independent dc sources coupled for the grid-tied photovoltaic (PV) application, which can effectively solve the unbalanced operational conditions generally appeared between two coupled independent PV sources induced by the unequal irradiation and temperature distribution. The proposed control scheme can simultaneously guarantee the maximum power point (MPP) operation of both PV sources and maintain the output waveform quality. Compared to the traditional two-stage PV inverter, the proposed NPC inverter could reduce the PV array voltage requirement and dc-link capacitors&rsquo; voltage rating, meanwhile show the advantage in operational efficiency. MATLAB simulations and the captured experimental results are presented to show the performance of the proposed three-level inverter.

scholarly journals SOLAR CHARGE CONTROLLER FOR DOMESTIC APPLICATION

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Mayur N Mallya, ◽  
Manasa P ◽  
Sameeksh M Shetty ◽  
Shamu M ◽  
Soniya Agrawal
Keyword(s):  
Pulse Width Modulation ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Pwm Inverter ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Perturb And Observe ◽  
Mathematical Equations ◽  
Power Point

In this paper, a solar charge controller with Maximum Power Point Tracking is designed and implemented using Matlab Simulink. There is also an output inverter integrated with the system to obtain a single phase AC output to power the home appliances. For the maximum power point tracking two methods, the Perturb and Observe (P&O) and Incremental Conductance (INC) algorithms are implemented and their performance is analysed. With the changing irradiance, the MPP is tracked effectively and a regulated DC voltage is obtained using Buck-Boost converter, which is suitable for the selected pulse width modulation (PWM) inverter. Mathematical modelling of the same is performed, establishing the relation between various mathematical equations and estimating quantitative behavior of the physical system.

scholarly journals Power Characteristics Analysis of Maximum Power Point Tracking (MPPT) and Pulse Width Modulation (PWM)

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Ilham Ramadhana Chofananda ◽  
Jamaaluddin Jamaaluddin ◽  
Arief Wisaksono ◽  
Izza Anshory
Keyword(s):  
Solar Energy ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Power Characteristics ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

Solar energy is a source of energy and has advantages compared to fossil energy. Indeed, further research and development of this type of solar power is needed, including at the University of Muhammadiyah Sidoarjo. The use of solar energy is carried out by installing photovoltaic (PV) cells with a photovoltaic output control system that uses MPPT (Maximum Power Point Tracking) and PWM (Pulse Width Modulation) to regulate the load used and charge the battery. The two PV control methods have different characteristics. These differences will be analyzed based on the characteristics of the load and sunlight contained in the electrical engineering laboratory of the Muhammadiyah University of Sidoarjo. It can be seen from the results of the analysis that at power above 200 W, MPPT has a better voltage stability than PWM.

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