scholarly journals Desain dan Simulasi Dual Input Single Output Buck Converter dengan Kontrol Fuzzy

2021 ◽  
Vol 10 (1) ◽  
pp. 63-70
Author(s):  
Abdul Rahman Wachid ◽  
Endro Wahjono ◽  
Syechu Dwitya Nugraha Nugraha
Keyword(s):  
Duty Cycle ◽  
Buck Converter ◽  
Set Point ◽  
Single Output

Dalam makalah ini didesain dan disimulasikan dual input single output buck converter dengan kontrol fuzzy untuk suplai beban DC dengan menggunakan software PSIM. Dual input single output converter dapat bekerja dengan dua sumber yang berbeda. Penggunaan dua sumber dari panel surya dan turbin angin adalah cara alternatif untuk mendapatkan nilai daya output yang lebih besar untuk suplai beban DC. Sumber dari panel surya dan turbin angin akan masuk ke dalam sistem rangkaian dual input buck converter secara bersamaan dengan kondisi sumber terpasang secara seri. Agar kedua sumber dapat bekerja secara bersamaan, duty cycle diatur menggunakan kontrol fuzzy sehingga tegangan output sesuai dengan yang diinginkan. Simulasi dilakukan dengan kondisi panel surya yang memiliki nilai iradiasi dan temperatur berubah-ubah serta turbin angin yang juga terkena angin dengan kecepatan tidak tetap, yaitu antara 4-8 m/s. Hasil simulasi menunjukkan bahwa dual input single output buck converter dapat bekerja dalam keadaan disuplai oleh dua sumber yang berbeda dengan tegangan output converter yang stabil di set point, yaitu 14,4 volt.

scholarly journals Design and Implementation Buck Converter for 540WP Solar Charger Using Fuzzy Logic Control

2018 ◽  
Vol 43 ◽  
pp. 01009
Author(s):  
Sutedjo ◽  
Ony Asrarul Qudsi ◽  
Andi Ardianto ◽  
Diah Septi Yanaratri ◽  
Suhariningsih ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Duty Cycle ◽  
Fuzzy Logic Control ◽  
Buck Converter ◽  
Test Results ◽  
Constant Voltage ◽  
Battery Charging ◽  
Set Point ◽  
Design And Implementation ◽  
Logic Control

This paper presents the details of design and implementation of DC-DC Buck converter as solar charger. This converter is designed for charging a battery with a capacity of 100 Ah (Ampere Hours) which has a charging voltage of 27.4 volts. The constant voltage method is selected on battery charging with the specified set point. To ensure the charging voltage is always on the set point, the duty cycle control of buck converter is set using Fuzzy Logic Control (FLC). The design implementation has been tested on PV (photovoltaic) with 540WP capacity. Based on the test results, this method is quite well implemented on the problem charger

scholarly journals Development of Four-Channel Buck-Type LED Driver with Automatic Current Sharing

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7844
Author(s):  
Yeu-Torng Yau ◽  
Kuo-Ing Hwu ◽  
Yao-De Tsai
Keyword(s):  
Duty Cycle ◽  
Light Emitting Diode ◽  
Input Voltage ◽  
Buck Converter ◽  
Led Driver ◽  
Voltage Range ◽  
Light Emitting ◽  
Single Output ◽  
Current Sharing ◽  
Single Input

A buck-type light-emitting diode (LED) driver is proposed herein. The proposed LED driver automatically possesses current sharing and high step-down voltage gain. Without complex control, the proposed LED driver, with a single input and multiple outputs, can achieve automatic current sharing of four-channel LED strings, even under the different number of LEDs of each LED string. Furthermore, as compared with the traditional four-phase interleaved buck converter with a single input and a single output having current sharing required, the proposed circuit has the duty cycle up to 0.5, not 0.25, meaning that under the same input voltage the latter has a wider output voltage range than that of the former. Above all, if the proposed circuit with N outputs, then it still has the duty cycle up to 0.5, not one over N as shown traditionally. Moreover, as compared with the current sharing based on the differential-mode transformer, the proposed circuit has no magnetic resetting loop required. In this paper, the operating principles and design considerations of the proposed converter are discussed. Finally, the theoretical analyses and performances of the proposed LED driver are verified by simulation and experiment.

scholarly journals PERANCANGAN BUCK CONVERTER SEBAGAI PENGATURAN LAJU KECEPATAN MOTOR DC PADA GERAK LONGITUDINAL DAN TRANSVERSAL PROTOTYPE OVERHEAD CRANE

TRANSIENT ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 319
Author(s):  
Iqba Anggiawan ◽  
Tejo Sukmadi ◽  
Mochammad Facta
Keyword(s):  
Duty Cycle ◽  
Buck Converter ◽  
Overhead Crane

Crane merupakan alat pendukung pada bidang industri, dalam penerapannya beban yang ditanggung oleh crane beragam, maka diperlukan sebuah sistem dalam mengatur kecepatan kerja crane untuk menyesuaikan jenis barang yang ditanggung. Dalam penelitian ini dilakukan perancangan prototype overhead crane dengan penggerak motor DC magnet permanen CSD80A1-A yang di dioperasikan oleh buck converter. Pengaturan kecepatan putar motor DC magnet permanen sebagai penggerak  prototype overhead crane dilakukan dengan memvariasikan nilai duty cycle pada buck converter. Prototype overhead crane ini dilakukan pengujian dengan variasi tidak dibebani dan dibebani sebesar 5 kg. Berdasarkan hasil pengukuran buck converter, nilai output terendah terjadi pada gerakan forward transversal tidak dibebani dengan duty cycle 60% yang menghasilkan daya keluaran 7,74 watt, kecepatan putar 76,53 rpm, dan torsi 0,96 Nm. Nilai output tertinggi terjadi pada gerakan forward longitudinal dibebani 5 kg dengan duty cycle 90%, yang menghasilkan daya keluaran 24,79 watt, kecepatan putar 80,59 rpm, dan torsi 2,93 Nm.

scholarly journals Evaluasi Performa Fuzzy Logic Controller untuk mengatur kecepatan Motor DC Penguatan Terpisah

2020 ◽  
Vol 12 (2) ◽  
pp. 100-110
Author(s):  
Muhammad Aditya Ardiansyah ◽  
Renny Rakhmawati ◽  
Hendik Eko Hadi Suharyanto ◽  
Era Purwanto
Keyword(s):  
Fuzzy Logic ◽  
Steady State ◽  
Duty Cycle ◽  
Fuzzy Logic Controller ◽  
Dc Motor ◽  
Boost Converter ◽  
Voltage Source ◽  
Single Output ◽  
Multiple Input ◽  
State Error

Beragamnya metode yang ditawarkan oleh fuzzy logic kontroller membuat sebagaian orang meneliti mengenai perbedaan metode inferensi yang digunakan oleh fuzzy logic controller. Sejauh ini terdapat tiga metode fuzzy logic kontroller yang telah dikembangkan yaitu Mamdani, Sugono dan Sukamoto. Pada jurnal ini penggunaan fuzzy logic kontroller akan dievaluasi dengan menggunakan motor dc penguat terpisah sebagai beban untuk melakukan pengaturan kecepatan motor dc. Pada paper ini tujuan utamanya adalah dapat mengendalikan kecepatan dari motor DC Penguatan Terpisah dengan mengatur tegangan jangkar dari motor tersebut. DC motor merupakan salah satu jenis motor memiliki banyak aplikasi dan memiliki kemudahan untuk mengatur kecepatan pada motor tersebut. Logika fuzzy yang digunakan pada studi ini adalah inferensi sugeno dimana dengan konfigurasi Multiple Input Single Output (MiSo). Dimana input berupa error dan perubahan error dan output berupa duty cycle dikarenakan yang dikendalikan oleh logika fuzzy adalah Boost Converter selaku controlled voltage source. Target pada jurnal ini adalah dari kecilnya nilai steady – state error dan minimnya osilasi sehingga mampu membuat sistem lebih stabil. Pada studi ini, Hasil pengujian dilakukan dengan menggunakan Simulink by Matlab dengan Hasil pengujian berupa error rata rata sebesar 5.36%.

scholarly journals Speed control of synchronous machine by changing duty cycle of DC/DC buck converter

AIMS Energy ◽  
2015 ◽  
Vol 3 (4) ◽  
pp. 728-739 ◽  
Author(s):  
Rashid Al Badwawi ◽  
◽  
Mohammad Abusara ◽  
Tapas Mallick
Keyword(s):  
Duty Cycle ◽  
Speed Control ◽  
Synchronous Machine ◽  
Buck Converter

A Simple Analog Feed-Forward Controller Design for DC-DC Buck Converter

2015 ◽  
Vol 643 ◽  
pp. 61-67
Author(s):  
Shu Wu ◽  
Yasunori Kobori ◽  
Haruo Kobayashi
Keyword(s):  
Transient Response ◽  
Pulse Width Modulation ◽  
Controller Design ◽  
Buck Converter ◽  
Charge Balance ◽  
Feed Forward ◽  
Feed Forward Control ◽  
Single Output ◽  
Output Capacitor ◽  
Feed Forward Controller

This paper presents usage of analog feed-forward control to improve the transient response of DC-DC buck converters with pulse-width-modulation (PWM). The analog feed-forward controller is simple and does not require complicated calculations. Duty cycle is modulated directly based on the charge balance of the output capacitor. Compared with conventional feedback control, this simple feed-forward controller reduces control delay and provides a satisfactory transient response. We apply this technique to a Single-Inductor-Dual-Output (SIDO) buck converter as well as a Single-Inductor-Single-Output (SISO) buck converter, and show that its cross-regulation is improved. We have validated the proposed method with SIMetrix simulations.

Study on Dynamical Behaviors Mechanism of Sine Voltage Compensation in Buck Converters

2014 ◽  
Vol 536-537 ◽  
pp. 1497-1500
Author(s):  
Fang Ying Zhang ◽  
Wei Hu ◽  
Xiao Li Long ◽  
Xin Bing Chen
Keyword(s):  
Theoretical Analysis ◽  
Duty Cycle ◽  
Monodromy Matrix ◽  
Buck Converter ◽  
Buck Converters ◽  
Stabilization Control ◽  
Dynamical Behaviors ◽  
Voltage Compensation ◽  
Signal Changes ◽  
Compensation Signal

This paper analyzes the effect of stable behaviors when amplitude, phase of sine voltage compensation signal are added in the system, reveals that the dynamical behaviors mechanism that sine voltage compensation signal changes feedback voltage-mode controlled buck converter lies in changing the duty cycle without impacting the system stable error via analyzing the change of period multiplier in Monodromy matrix and conditions of period bifurcation, and finally achieves stabilization control for bifurcation and chaotic behaviors. The simulation and experimental results prove the correctness of the theoretical analysis.

EFFECT OF PULSE WIDTH MODULATION ON DC MOTOR SPEED

2017 ◽  
Vol 5 (2) ◽  
pp. 42 ◽  
Author(s):  
Cosmas Tatenda Katsambe ◽  
Vinukumar Luckose ◽  
Nurul Shahrizan Shahabuddin
Keyword(s):  
Duty Cycle ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Dc Motor ◽  
Buck Converter ◽  
Motor Speed ◽  
Push Button ◽  
Cycle Rate ◽  
Speed Controller ◽  
And Performance

Pulse width modulation (PWM) is used to generate pulses with variable duty cycle rate. The rapid rising and falling edges of PWM signal minimises the switching transition time and the associated switching losses. This paper presents a DC motor speed controller system using PWM technique. The PWM duty cycle is used to vary the speed of the motor by controlling the motor terminal voltage.The motor voltage and revolutions per minutes (RPM) obtained at different duty cycle rates. As the duty cycle increases, more voltage is applied to the motor. This contributes to the stronger magnetic flux inside the armature windings and the increasethe RPM. The characteristics and performance of the DC motor speed control system was investigated. In this paper, a PIC microcontroller and a DC-DC buck converter are employed in the DC motor speed controller system circuit. The microcontroller provides flexibility to the circuit by incorporating two push button switches in order to increase and to decrease the duty cycle rate. The characteristics and performance of the motor speed controller system using microcontroller was examined at different duty cycle rate ranging from 19% to 99%.

scholarly journals Efficiency of Synchronous and Asynchronous Buck-Converter at Low Output Current.

2019 ◽  
Vol 27 (2) ◽  
pp. 194-206
Author(s):  
Ismael Khaleel Murad
Keyword(s):  
Duty Cycle ◽  
Buck Converter ◽  
Voltage Regulator ◽  
Switching Frequency ◽  
Output Current ◽  
Load Current ◽  
Small Load ◽  
Step Down ◽  
Conduction Mode ◽  
Continuous Conduction Mode

In this paper both synchronous and asynchronous buck-converter were designed to work in continuous conduction mode “CCM” and to deliver small load current. Then the two topologies were tested in terms of efficiency at small load current by use of  different values of switching frequencies (range from 150 KHz to 1MHz) and three separated values of duty-cycle (0.4, 0.6 and 0.8).   Obtained results turns out that efficiency of both synchronous and asynchronous buck-converter “switching step-down voltage regulator” responds in a negative manner to the increase in the switching frequency. However, this impact is being stronger in synchronous topology because of magnifying effect of losses related to switching frequency compared to those related to conduction when working at small load currents; this behavior makes obtained efficiency of both topologies in convergent levels when they operated to deliver small output current especially when working with higher switching frequencies. Larger duty-cycle can rise up the efficiency of both topologies.

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