A Novel IPOS High-Frequency Link Matrix Converter With Wide Output Voltage Range And Low Output Current Ripple

2021 ◽  
Author(s):  
Dongxiang Wan ◽  
Jinqiu Song ◽  
Bin Duan ◽  
Xiangjie Li ◽  
Chenghui Zhang
Keyword(s):  
High Frequency ◽  
Output Voltage ◽  
Matrix Converter ◽  
Output Current ◽  
Voltage Range ◽  
Current Ripple

An Effort to Reduce Voltage from DC to DC Converter with a Monolithic Circuit Based on IC LM 2596

2019 ◽  
Vol 16 (12) ◽  
pp. 5162-5165
Author(s):  
Cekmas Cekdin ◽  
Zainuddin Nawawi ◽  
Muhammad Faizal
Keyword(s):  
Output Voltage ◽  
Cooling System ◽  
Electronic Devices ◽  
Input Voltage ◽  
High Heat ◽  
Output Current ◽  
Voltage Range ◽  
Step Down

Step down regulator is a device that can reduce the more significant input voltage to a smaller output voltage. The output is stable and well regulated, although the voltage fluctuates in the recommended input voltage range. In the system using IC LM 2596, the input voltage is 40 Volt dc, and the output voltage is 30 Volt dc. The output current of 15 amperes is applied to charge a 100 Ampere hour (Ah) battery on an inverter system installed and integrated with other electronic devices. The step-down IC LM 2596 will be stable at the output current below 15 Ampere. It is especially stable at load currents from 13.2 Ampere to 14.57 Ampere. In order for the current not to shrink, a good cooling system must be designed to dispose of heat on the IC LM 2596. Because the high heat greatly affects the output current on the IC LM 2596.

Analysis on Bi-Frequency BUCK Circuit Current Ripple Suppressing

2013 ◽  
Vol 834-836 ◽  
pp. 1101-1104
Author(s):  
Jun Li ◽  
Jun Hong Zhang ◽  
Wei Gao
Keyword(s):  
Phase Shift ◽  
Theoretical Analysis ◽  
Frequency Modulation ◽  
High Frequency ◽  
Simulation Studies ◽  
Current Analysis ◽  
Output Current ◽  
Low Frequencies ◽  
Simulation Results ◽  
Current Ripple

Bi-frequency modulation can effectively solve the contradiction between high frequency and efficiency, but it will bring the problem of the current ripple. In this paper, use Buck circuit as the prototype, adopt phase shift parallel technology, make theoretical analysis and simulation studies on the bi-frequency circuit that the high and low frequencies units are operating in a state of continuous inductor current. Analysis and simulation results show that phase shift parallel can effectively inhibit the output current ripple. [email protected] [email protected] [email protected]

scholarly journals AC–DC Flyback Dimmable LED Driver with Low-Frequency Current Ripple Reduced and Power Dissipation in BJT Linearly Proportional to LED Current

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4270
Author(s):  
Yeu-Torng Yau ◽  
Kuo-Ing Hwu ◽  
Kun-Jie Liu
Keyword(s):  
Power Dissipation ◽  
Light Emitting Diode ◽  
Low Frequency ◽  
Output Current ◽  
Led Driver ◽  
Voltage Range ◽  
Flyback Converter ◽  
Linear Current ◽  
Current Ripple ◽  
Frequency Current

In this paper, a dimmable light-emitting diode (LED) driver, along with the low-frequency current ripple decreased and the bipolar junction transistor (BJT) power dissipation reduced, is developed. This driver is designed based on a single-stage flyback converter. On the one hand, the low-frequency output current ripple reduction is based on the physical behavior of the linear current regulator. On the other hand, when the voltage across the LED string is decreased/increased due to dimming or temperature, the output voltage of the flyback converter will be automatically regulated down/up, thereby making the power dissipation in the BJT linearly proportional to the LED current. By doing so, not only the power loss in the linear current regulator will be decreased as the LED current is decreased or the LED temperature rises, but also the output current ripple can be reduced. Furthermore, the corresponding power factor (PF) is almost not changed, and the total harmonic distortion (THD) is improved slightly. In addition, the LED dimming is based on voltage division. Eventually, a 30 W LED driver, with an input voltage range from 85 to 295 Vrms and with 24 LEDs in series used as a load, is developed, and accordingly, the feasibility of the proposed LED driver is validated by experimental results.

AN IMPROVED MULTIDEVICE INTERLEAVED BOOST CONVERTER WITH NOVEL MULTIPLEX CONTROLLER FOR FUEL CELL

2016 ◽  
Vol 79 (1) ◽  
Author(s):  
Muhamad Norfais Faisal ◽  
Azah Mohamed ◽  
M. A. Hannan ◽  
Wan Ramli Wan Daud ◽  
Edy Herianto Majlan
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Output Voltage ◽  
Boost Converter ◽  
Input Current ◽  
Simulation Studies ◽  
Output Current ◽  
Output Capacity ◽  
Interleaved Boost Converter ◽  
Current Ripple

Mass commercialization of fuel cells (FC) and its usage in transportation requires that the FC technology to be competitive with regard to performance and cost, while meeting efficiency and emissions targets. Therefore, fuel cell output current ripple that may shorten FC lifespan, worsen FC efficiency and reduce the FC output capacity need to be addressed. In this paper, an improved multi-device interleaved boost converter (MDIBC) with novel multiplex controller topology is designed to further reduce the input current and output voltage ripples, without increasing the number of MDIBC switching devices. The Matlab/Simulink behaviour model of the improved MDIBC with novel multiplex controller and conventional MDIBC circuit are developed in the simulation studies. The proposed improved MDIBC design is then compared with the conventional MDIBC and its performance is verified. 

Integrated Asymmetrical Half-Bridge Zeta (AHBZ) Converter for DC/DC Stage of LED Driver With Wide Output Voltage Range and Low Output Current

2015 ◽  
Vol 62 (12) ◽  
pp. 7489-7498 ◽  
Author(s):  
Jae-Il Baek ◽  
Jae-Kuk Kim ◽  
Jae-Bum Lee ◽  
Han-Shin Youn ◽  
Gun-Woo Moon
Keyword(s):  
Output Voltage ◽  
Output Current ◽  
Led Driver ◽  
Voltage Range

scholarly journals Implementation of Ultra-Modified Symmetric Sequence Algorithm for Space Vector Modulation of Matrix Converter

2018 ◽  
Vol 7 (3) ◽  
pp. 264
Author(s):  
Kotb B. Tawfiq ◽  
A. S. Mansour ◽  
E. E. EL-Kholy
Keyword(s):  
Output Voltage ◽  
Harmonic Distortion ◽  
Matrix Converter ◽  
Space Vector Modulation ◽  
Input Frequency ◽  
Output Current ◽  
Output Frequency ◽  
Modified Technique ◽  
Space Vector ◽  
Vector Modulation

<span lang="EN-US">This paper proposes an ultra- modified symmetric sequence algoritm of space vector modulation of matrix converter. The ultra-modified technique improves the drawbacks of the modified one where it provides a reduction of the total harmonic distortion for both output voltage and output current. Some of the advantages of matrix converter are introduced in this paper. These advantages represented in the output frequency of matrix converter which may be greater than input frequency, controlling rms value of the output voltage and the ability to control the input displacement factor.At the end of this paper simulation and experimental results are introduced which give a presice proof to the proposed algorithms.</span>

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