DC-DC Boost Converter with Constant Output Voltage for Grid Connected Photovoltaic Application System

The main purpose of this paper is to introduce an approach to design a DC-DC boost converter with constant output voltage for grid connected photovoltaic application system. The boost converter is designed to step up a fluctuating solar panel voltage to a higher constant DC voltage. It uses voltage feedback to keep the output voltage constant. To do so, a microcontroller is used as the heart of the control system which it tracks and provides pulse-width-modulation signal to control power electronic device in boost converter. The boost converter will be able to direct couple with grid-tied inverter for grid connected photovoltaic system. Simulations were performed to describe the proposed design. Experimental works were carried out with the designed boost converter which has a power rating of 100 W and 24 V output voltage operated in continuous conduction mode at 20 kHz switching frequency. The test results show that the proposed design exhibits a good performance

Constant DC output boost converter for solar system sourace model

A Neural network controller of DC-DC boost converter is designed and presented in this project. In order to control the output voltage of the boost converter, the controller is designed to change the duty cycle of the converter. The mathematical model of boost converter and neural network controller are derived to design simulation model. The simulation is developed on Matlab simulation program. To verity the effectiveness of the simulation model, an experimental set up is developed. The boost circuit with mosfet as a switching component is developed. The neural network controller to generate duty cycle of PWM signal is programmed. The simulation and experimental results show that the output voltage of the boost converter can be controlled according to the value of duty cycle

Transient response analysis for DC-DC boost converter

DC-DC Boost Converter and Hybrid Posicast Controller is developed and simulated using MATLAB Simulink software. DC-DC Boost converter has a very high overshoot and a very high settling time which produce oscillated output response. In order to overcome this weakness, Hybrid Posicast Controller is used in order to regulate the output voltage to a desire value. Hybrid Posicast Controller operated within the feedback loop of the system. Transfer function of DC-DC Boost Converter are derived and Posicast elements of and Td can be calculated directly from the transfer function. Single gain, K is used in order to eliminate the overshoot and minimize the settling time. Simulation results show that Hybrid Posicast Controller effectively regulate the output voltage to a desire value even though load resistance and duty cycle have been changed with a various values. DC-DC Boost Converter using Posicast Controller has an excellent performance to overcome unregulated 377$ input voltage, eliminate overshoot and minimize the settling tim

PERANCANGAN MULTILEVEL BOOST CONVERTER EMPAT TINGKAT UNTUK PENGISIAN BATERAI MOBIL LISTRIK

Multilevel boost converter adalah sebuah konverter DC-DC berbasis PWM yang mengkombinasikan antara boost converter konvensional dan fungsi switched capacitor untuk menghasilkan tegangan output yang berbeda dan stabil dengan hanya menggunakan 1 driven switch, 1 induktor, 2N-1 dioda dan 2N-1 kapasitor. Keuntungan multilevel boost converter dibandingkan boost converter konvensional yaitu memiliki rating tegangan yang lebih kecil pada komponen, dan rasio konversi yang luas untuk menaikkan tegangan DC dengan nilai duty cycle yang kecil. Penelitian ini bertujuan untuk merancang multilevel boost converter 4 tingkat untuk pengisian baterai mobil listrik dan membandingkan kinerjanya dengan boost converter konvensional. Penelitian dimulai dengan merancang boost converter menggunakan program simulasi Matlab Simulink untuk mendapatkan nilai komponen yang optimal untuk digunakan. Dari hasil simulasi, dibuat bentuk fisik rangkaian boost converter konvensional dan multilevel boost converter 4 tingkat untuk dilakukan pengujian lebih lanjut. Pada pengujian menaikkan tegangan secara otomatis didapat error rata-rata yang terjadi pada boost converter konvensional adalah sebesar ±1.2375V, sedangkan untuk multilevel boost converter adalah sebesar ±1.61125V. Rata-rata kenaikan tegangan per 10% duty cycle dalam keadaan tanpa beban pada boost converter konvensional adalah 24,93V sedangkan pada multilevel boost converter adalah sebesar 36,34V. Rata-rata efisiensi dengan menggunakan beban 100Ω, 200Ω dan 300Ω secara berurut pada boost converter konvensional adalah 83,75%, 83,52% dan 85,49%, sedangkan pada multilevel boost converter adalah 28,35%, 49,41% dan 70,11%. Kemampuan pengisian boost converter konvensional adalah sebesar 0,02A dan kemampuan pengisian multilevel boost converter adalah sebesar 0,06A namun kemampuan pengisian yang diperlukan adalah sebesar 3A. Boost converter konvensional dan multilevel boost converter 4 tingkat berhasil dirancang dan dibuat namun belum berhasil untuk melakukan pengisian baterai mobil listrik

Rancang Bangun Interleaved Boost Converter Berbasis Arduino

Intisari — Pada dc-dc boost converter, arus masukan dan tegangan keluaran masih menghasilkan ripple yang cukup besar. Ripple merupakan masalah yang mengurangi kehandalan dari konverter itu sendiri. Sehingga diperlukan metode perbaikan untuk mengurangi ripple pada boost converter. Pada penelitian ini metode yang ditawarkan adalah menggunakan teknik interleaved pada boost converter. Teknik tersebut terbukti dapat mengurangi besar nilai ripple pada arus masukan dan tegangan keluaran secara signifikan. Dari hasil simulasi dan pengujian perangkat keras interleaved boost converter dengan nilai duty cycle yang bervariasi terlihat penurunan besar nilai ripple pada arus masukan dan tegangan keluaran boost converter jauh lebih kecil dibandingkan dengan hasil boost converter konvensional. Kata kunci — Interleaved Boost Converter, Boost Converter, Ripple. Abstract — In the dc-dc boost converter, the input current and the output voltage still produce large enough  ripple. Ripple is the problem that reduces the reability of the converter itself. So it needs some method to reduce the ripple of boost converter. In this thesis the method that is offered is to use the interleaved technique to boost converter. The technique is proven can reduce the ripple’s value on the input current and the output voltage significantly. Based on the result of simulation and hardware testing of interleaved boost converter with variation of the duty cycle value, a decrease in the input current and output voltage boost converter were more smaller than a conventional boost converter. Keywords— Interleaved Boost Converter, Boost Converter, Ripple

Rancang Bangun Multilevel Boost Converter Untuk Catu Daya Motor Arus Searah Pada Kendaraan Listrik Berbasis Mikrokontroler

Abstrak— Rangkaian multilevel boost converter memiliki prinsip kerja yang sama dengan boost converter konvensional namun rasio tegangan keluarannya lebih tinggi. Dimana tegangan keluaran dari multilevel boost converter ini akan digunakan sebagai catu daya untuk mengendalikan kecepatan putar motor arus searah (MAS). Kemudian akan dilakukan perbandingan antara tegangan keluaran multilevel boost converter dengan boost converter konvensional yang digunakan sebagai catu daya MAS. Pada penelitian ini nilai tegangan keluaran multilevel boost converter saat dihubungkan pada MAS dengan duty cycle 20% yaitu 80,3 volt dan MAS sudah mulai berputar dengan kecepatan 350 rpm. Sementara tegangan keluaran boost converter konvensional sebesar 39,4 volt namun MAS belum dapat berputar pada duty cycle 20% dan tegangan masukan yang sama yaitu 12,3 volt. Kemudian dilakukan penambahan beban MAS pada pengujian multilevel boost converter. Dimana semakin berat beban pada MAS maka torsinya akan meningkat. Dengan demikian perangkat multilevel boost converter dapat digunakan sebagai catu daya MAS untuk kendaraan listrik. Kata kunci: Multilevel boost converter, boost converter, motor arus searah Abstract—Multilevel boost converter circuit has the same working principle with conventional boost converter. Hence, the ratio of its output voltage is higher that will be used as power supply for controlling the rotational speed of MAS. Then, there will be comparison among the output voltage of multilevel boost converter and conventional boost converter which will be used as power supply of MAS. On this research, the output voltage value of multilevel boost converter which is connected with MAS at the duty cycle 20 % is 80,3 volt. Furthermore, it had rotated at the speed of 320 rpm. Meanwhile, the output voltage of boost converter conventional is 39,4 volt. On the contrary, MAS can not rotated at the duty cycle of 20 % with the same input voltage that will be 12,3 volt. Then, it will be added with load of MAS for multilevel boost converter testing. While the load of MAS is heavier, its torque will be increased too. Therefore, multilevel boost converter device can be used as power supply of MAS for electric vehicles. Keywords: Multilevel boost converter, boost converter, direct current moto

Development of a DC-DC buck boost converter using fuzzy logic control

A fuzzy controller of DC-DC Buck-boost converter is designed and presented in this project. In order to control the output voltage of the buck-boost converter, the controller is designed to change the duty cycle of the converter. The mathematical model of buckboost converter and fuzzy logic controller are derived to design simulation model. The simulation is developed on Matlab simulation program. To verity the effectiveness of the simulation model, an experimental set up is developed. The buck-boost circuit with mosfet as a switching component is developed. The fuzzy logic controller to generate duty cycle of PWM signal is programmed. The simulation and experimental results show that the output voltage of the buck-boost converter can be controlled according to the value of duty cycl

Perancangan dan Pembuatan Prototype Catu Daya Tegangan Output Konstan Mengunakan Teknologi Konverter Step Up Kapasitas 320 Watt

Boost converter is a dc to dc converter with an output voltage is higher than the voltage enter consisting of at least two a semiconductor ( transistors and a diode ) and a coil the depositary as an element of energy .Output boost converter in tentukkan by duty cycle of pwm that where enlarged duty cycle pwm and an output voltage is boost converter will go up and vice versa sags duty cycle pwm and an output voltage is boost converter down .On this thesis was built by a boost converter that could raise its 12v dc voltage into 55v dc and capable of flow the burden until 2.21a .The signal source pwm of mikrokontroller , switch mosfet use , inductance an air core and a diode use a kind of fast recovery to keep the level of voltage in useprisoners as a voltage divider befungsi as a series of feedback from output boost converter adcmikrokontroller to

HIGH FREQUENCY BOOST CONVERTER EMPLOYING SOFT SWITCHING AUXILIARY RESONANT CIRCUIT

A new soft-switching boost converter is proposed in this paper. The conventional boost converter generates switching losses at turn ON and OFF, and this causes a reduction in the whole system’s efficiency. The proposed boost converter utilizes a soft switching method using an auxiliary circuit with a resonant inductor and capacitor, auxiliary switch, and diodes. Therefore, the proposed soft-switching boost converter reduces switching losses more than the conventional hard-switching converter. The efficiency, which is about 91% in hard switching, increases to about 97% in the proposed soft-switching converter. In this paper, the performance of the proposed soft-switching boost converter is verified through the theoretical analysis, simulation, and experimental results