scholarly journals DESIGN & ANALYSIS OF FLY BACK CONVERTER FOR GRID & FILAMENT POWER SUPPLIES OF TRAVELLING WAVE TUBE

2014 ◽  
pp. 25-29
Author(s):  
SUNIL KUMAR. M ◽  
S. G. SRIVANI ◽  
VENKATESH PRABHU
Keyword(s):  
Power Supply ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Travelling Wave ◽  
Power Supplies ◽  
Wave Tube ◽  
Negative Power ◽  
Turn On ◽  
Positive Voltage ◽  
Converter Topology

In High Power Pulsed Radar Transmitters the gridded TWT are used and consists of floating deck modulator unit which houses the Grid and Filament power supplies. The Grid Control includes the Grid Positive & Grid Negative Power Supplies. The Positive voltage is used to turn on the TWT & Negative voltage is used to operate the TWT in off state. The Filament power supply heats the cathode to required temperature to emit electrons. The aim of the project is to design the Grid power supplies and Filament Power supply based on the Fly back Converter topology which is operated at 100 KHz in DCM mode and CCM mode respectively. The Pulse width modulation technique is used to maintain the voltage at desired value using an IC UC1526.The switching device is protected ag

scholarly journals A Gliding Arc Microreactor Power Supply System Based on Push–Pull Converter Topology

2020 ◽  
Vol 10 (11) ◽  
pp. 3989
Author(s):  
Piotr Krupski ◽  
Henryka Danuta Stryczewska
Keyword(s):  
Power Supply ◽  
Plasma Reactor ◽  
Power Supplies ◽  
Electronic Systems ◽  
Process Gas ◽  
Inverter Power Supply ◽  
Special Part ◽  
Converter Topology ◽  
Power Inverters ◽  
Plasma Technologies

The era of evolution in power electronic systems has led to a widespread displacement of power supplies operating at mains frequencies. Switched-mode power inverters offer possibilities incomparably higher than mains transformers. These trends have also entered into plasma technologies, including GlidArc plasma processing. The article presents the use of an inverter power supply for a miniaturized GlidArc. It is a demonstration of using a push–pull topology in an unusual application. A special part is devoted to parasitic phenomena in the inverter and the implementation of switching overvoltages as a way of improving the ignition parameters of the power supply. The results of the tests with a plasma reactor in air conditions as a process gas are also presented.

Designing of a High Voltage Power Supply for Electrospinning Apparatus Using a High Voltage Flyback Transformer (HVFBT)

2015 ◽  
Vol 771 ◽  
pp. 145-148 ◽  
Author(s):  
Muhammad Miftahul Munir ◽  
Dian Ahmad Hapidin ◽  
Khairurrijal
Keyword(s):  
High Voltage ◽  
Duty Cycle ◽  
Power Supply ◽  
Pulse Width ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Experimental Results ◽  
High Voltage Power Supply ◽  
Electrospinning Technique ◽  
The World

Research on nanofiber materials is actively done around the world today. Various types of nanofibers have been synthesized using an electrospinning technique. The most important component when synthesizing nanofibers using the electrospinning technique is a DC high voltage power supply. Some requirements must be fulfilled by the high voltage power supply, i.e., it must be adjustable and its output voltage reaches tens of kilovolts. This paper discusses the design and development of a high voltage power supply using a diode-split transformer (DST)-type high voltage flyback transformer (HVFBT). The DST HVFBT was chosen because of its simplicity, compactness, inexpensiveness, and easiness of finding it. A pulse-width modulation (PWM) circuit with controlling frequency and duty cycle was fed to the DST HVFBT. The high voltage power supply was characterized by the frequency and duty cycle dependences of its output voltage. Experimental results showed that the frequency and duty cycle affect the output voltage. The output voltage could be set from 1 to 18 kV by changing the duty cycle. Therefore, the nanofibers could be synthesized by employing the developed high voltage power supply.

PWM Chopper of Ultrasonic Power Supply Based on FPGA

2012 ◽  
Vol 476-478 ◽  
pp. 1305-1308
Author(s):  
Chun Feng Sun ◽  
Wei Guang Zhang
Keyword(s):  
Power Supply ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Output Pulse ◽  
Open Loop ◽  
Control Circuit ◽  
Ultrasonic Power ◽  
Pwm Control ◽  
Power Regulation ◽  
Regulation Method

Pulse width modulation (PWM) is often one of the important power regulation method of ultrasonic power supply. The traditional PWM control circuit has the shortcomings of complex design structure, slow dynamic response and low reliability. An advanced PWM technique for choppers of ultrasonic power supply based on FPGA is proposed. Through open-loop operation, it regulates the output pulse width of ultrasonic power supply dynamically. The simulation result shows that the PWM control circuit based on FPGA can realize to adjust the width of PWM signal and power regulation conveniently.

scholarly journals INVERTER FULL BRIDGE SATU FASA BERBASIS IC SG3524

TRANSIENT ◽  
2017 ◽  
Vol 6 (3) ◽  
pp. 467
Author(s):  
Kusumo Tri Atmojo ◽  
Mochammad Facta ◽  
Tejo Sukmadi
Keyword(s):  
Duty Cycle ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Power Supplies ◽  
Uninterruptible Power Supplies ◽  
Uninterruptible Power

Inverter merupakan sebuah konverter yang mengubah sebuah masukan arus searah menjadi arus bolak-balik. Dalam beberapa bentuk inverter tegangan keluaran arus bolak balik tersebut dapat dikendalikan besar magnitud dan frekuensinya. Penggunaan inverter dapat berupa catu daya untuk pengaturan kecepatan motor ac, uninterruptible power supplies (UPS) dan alat konversi tenaga listrik dari baterai. Pada penelitian ini, inverter yang dirancang menggunakan topologi full bridge. Topologi ini memiliki keunggulan berupa magnitud tegangan keluaran maksimum yang sama dengan tegangan magnitud tegangan arus searah yang menjadi tegangan masukannya. Dengan tegangan masukan yang sama, topologi full bridge memiliki daya yang lebih besar dibandingkan inverter topologi lainnya. IC SG3524 digunakan sebagai pembangkit sinyal PWM (Pulse Width Modulation). Inverter full bridge dalam penelitian ini dirancang untuk dapat divariasikan besar frekuensi dan duty cyclenya. Frekuensi dari inverter dirancang untuk beroperasi dalam rentang 19 Hz – 65 Hz dan duty cycle 11 % - 44 %. Berdasarkan hasil pengujian Inverter full bridge menghasilkan gelombang kotak keluaran arus bolak balik. Efisiensi inverter full bridge mencapai nilai terendah sebesar 81,56% dan nilai tertinggi sebesar 99,53%  ketika dibebani lampu pijar dengan daya 40, 60, dan 100 W. Efisiensi inverter ketika dibebani motor induksi mencapai nilai 86,55 % sebagai nilai efisiensi terendah dan 98,35% sebagai nilai efisiensi tertinggi.

5V to 6kV DC-DC Converter Using Switching Regulator with Cockcroft-Walton Voltage Multiplier for High Voltage Power Supply Module

2019 ◽  
Vol 12 (2) ◽  
pp. 162-171 ◽  
Author(s):  
Nor A. Azmi ◽  
Sohiful A.Z. Murad ◽  
Azizi Harun ◽  
Rizalafande C. Ismail
Keyword(s):  
High Voltage ◽  
Power Supply ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Feedback Signal ◽  
High Voltage Power Supply ◽  
Voltage Multiplier ◽  
Switching Regulator ◽  
Load Regulation ◽  
Simulation Results

Background: This paper describes the design of 5 V to 6 kV DC-DC converter by using a switching regulator with Cockroft-Walton (C-W) voltage multiplier for a high voltage power supply module. Methods: The proposed design consists of Pulse Width Modulation (PWM) controller circuit, voltage multiplier, and feedback signal. A single unit of 5 V input triggers LT1618 controller circuit to generate 20 V which then produces 300 V from LT8331 output that is connected to diode-capacitor multiplier circuit to achieve final 6 kV. A negative feedback signal is required to stabilize an output voltage. With the implementation of C-W voltage multiplier technique, the output is boosted up as required from the input signal voltage 5 V DC. Results: The LTspice simulation results indicate that the proposed DC converter can generate 6.20 kV. Line regulation of 17 % and the load regulation of 14 % are obtained based on the proposed design. Conclusion: The proposed design is suitable for high voltage power supply module.

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