scholarly journals Theoretical and Experimental Investigation of the Voltage Ripple across Flying Capacitors in the Interleaved Buck Converter with Extended Duty Cycle

Energies ◽  
2018 ◽  
Vol 11 (4) ◽  
pp. 1017 ◽  
Author(s):  
Peter Zajec ◽  
Mitja Nemec
Keyword(s):  
Experimental Investigation ◽  
Duty Cycle ◽  
Buck Converter ◽  
Voltage Ripple ◽  
Flying Capacitors

scholarly journals ANALISA BUCK CONVERTER DAN BOOST CONVERTER PADA PERUBAHAN DUTY CYCLE PWM DENGAN MEMBANDINGKAN FREKUENSI PWM 1,7 Khz DAN 3,3 Khz

2018 ◽  
Vol 18 (1) ◽  
pp. 42
Author(s):  
Hendi Matalata ◽  
Leily W Johar
Keyword(s):  
Duty Cycle ◽  
Power Supply ◽  
Output Voltage ◽  
Boost Converter ◽  
Buck Converter ◽  
Electrical Load ◽  
Boost Converters ◽  
Electric Power Supply ◽  
Voltage Ripple ◽  
Supply Equipment

Buck-Boost Converters are electric power supply device for raising and lowering the voltage DC (Direct Current) power supply equipment according to needs of the electrical load, this research is designed to Buck-Boost Converter and Converter on the 12 Volt power supply, the design of a Buck Converter power supply derived 5 Volt, 6Volt and 6 Volt design while the Boost Converter power supply 12 Volt offered up to 16 Volt, 19 Volt and 22 Volts in a way set the duty cycle of PWM frequency settings in 1.7 Khz and 3.3 Khz. Results research indicates the State of the differences in each frequency in the set output voltage ripple shape obtained is different, however, in the design of this research have been successfully carried out as expected.Keywords: buck converter, boost converter, change in duty cycle

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 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

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%.

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