New Hybrid High-Power Rectifier With Reduced THDI and Voltage-Sag Ride-Through Capability Using Boost Converter

2013 ◽  
Vol 49 (6) ◽  
pp. 2421-2436 ◽  
Author(s):  
Admarco Vieira Costa ◽  
Danillo Borges Rodrigues ◽  
Gustavo Brito Lima ◽  
Luiz Carlos Freitas ◽  
Ernane Antonio Alves Coelho ◽  
...  
Keyword(s):  
High Power ◽  
Boost Converter ◽  
Voltage Sag ◽  
Power Rectifier

scholarly journals Hybrid High-power Rectifier With Reduced Thdi Using Boost Converter To Provide Voltage Sag Ride-through Capability

2012 ◽  
Vol 17 (3) ◽  
pp. 609-622
Author(s):  
Admarço Vieira Costa ◽  
Danillo Borges Rodrigues ◽  
Gustavo Brito de Lima ◽  
Luiz Carlos de Freitas ◽  
Ernane Antônio Alves Coelho ◽  
...  
Keyword(s):  
High Power ◽  
Boost Converter ◽  
Voltage Sag ◽  
Power Rectifier

Hybrid high-power rectifier with reduced THDI and voltage sag ride-through capability

2011 ◽  
Author(s):  
Admarco V. Costa ◽  
Danillo B. Rodrigues ◽  
Luiz C. de Freitas ◽  
Joao B. Vieira ◽  
Ernane A. A. Coelho ◽  
...  
Keyword(s):  
High Power ◽  
Voltage Sag ◽  
Power Rectifier

scholarly journals A Novel Single-Switch Single-Stage LED Driver with Power Factor Correction and Current Balancing Capability

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1340
Author(s):  
Yih-Her Yan ◽  
Hung-Liang Cheng ◽  
Chun-An Cheng ◽  
Yong-Nong Chang ◽  
Zong-Xun Wu
Keyword(s):  
Power Factor ◽  
High Power ◽  
Pulse Width Modulation ◽  
Power Factor Correction ◽  
Harmonic Distortion ◽  
Boost Converter ◽  
Single Stage ◽  
Led Driver ◽  
Flyback Converter ◽  
High Power Factor

A novel single-switch single-stage high power factor LED driver is proposed by integrating a flyback converter, a buck–boost converter and a current balance circuit. Only an active switch and a corresponding control circuit are used. The LED power can be adjusted by the control scheme of pulse–width modulation (PWM). The flyback converter performs the function of power factor correction (PFC), which is operated at discontinuous-current mode (DCM) to achieve unity power factor and low total current harmonic distortion (THDi). The buck–boost converter regulates the dc-link voltage to obtain smooth dc voltage for the LED. The current–balance circuit applies the principle of ampere-second balance of capacitors to obtain equal current in each LED string. The steady-state analyses for different operation modes is provided, and the mathematical equations for designing component parameters are conducted. Finally, a 90-W prototype circuit with three LED strings was built and tested. Experimental results show that the current in each LED string is indeed consistent. High power factor and low THDi can be achieved. LED power is regulated from 100% to 25% rated power. Satisfactory performance has proved the feasibility of this circuit.

High-Power Rectifier Antenna Array in X Band

2021 ◽  
Author(s):  
Zimin Zhang ◽  
Li Deng ◽  
Shufang Li ◽  
Botao Feng ◽  
Lijie Chen
Keyword(s):  
Antenna Array ◽  
High Power ◽  
X Band ◽  
Power Rectifier

Proposed Topology for Voltage Sag Mitigation with New Control Strategy

2019 ◽  
Vol 15 (2) ◽  
pp. 138-144
Author(s):  
Adnan Diwan ◽  
Khalid Abdulhasan
Keyword(s):  
Duty Cycle ◽  
Control Strategy ◽  
Output Voltage ◽  
System Analysis ◽  
Control Method ◽  
Boost Converter ◽  
Voltage Sag ◽  
Voltage Sags ◽  
Long Duration ◽  
Simulation Results

voltage sags represent the greatest threat to the sensitive loads of industrial consumers, the microprocessor based-loads, and any electrical sensitive components. In this paper, a special topology is proposed to mitigate deep and long duration sags by using a modified AC to AC boost converter with a new control method. A boost converter is redesigned with a single switch to produces an output voltage that is linearly proportional to the duty cycle of the switch. On the other hand, the proposed control system is based on introducing a mathematical model that relates the missing voltage to the duty cycle of the boost converter switch. The simulation results along with the system analysis are presented to confirm the effectiveness and feasibility of the proposed circuit.

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