scholarly journals Two-Phase Interleaved Boost Converter with ZVT Turn-On for Main Switches and ZCS Turn-Off for Auxiliary Switches Based on One Resonant Loop

2020 ◽  
Vol 10 (11) ◽  
pp. 3881 ◽  
Author(s):  
Yeu-Torng Yau ◽  
Kuo-Ing Hwu ◽  
Wen-Zhuang Jiang
Keyword(s):  
Boost Converter ◽  
System Stability ◽  
Two Phase ◽  
Turn On ◽  
Zero Current Switching ◽  
Zero Current ◽  
Interleaved Boost Converter ◽  
Two Phases ◽  
Zero Voltage ◽  
A Current

A two-phase interleaved boost converter with soft switching is proposed herein. By means of only one auxiliary circuit with two auxiliary switches having zero-current switching (ZCS) turn-on, two main switches are switched on with zero-voltage transition (ZVT) to enhance the overall efficiency. Moreover, a current-balancing circuit with a no current-balancing bus is utilized to render the load current extracted from the two phases as even as possible, so that the system stability is upgraded. In such a study, this converter, having the input of 24 V ± 10 % and the rated output of 36V/6A, was employed to demonstrate the effectiveness of such a converter by experiment.

An Improved Zero Voltage Transition PWM Boost Converter with an Active Snubber Cell

2016 ◽  
Vol 25 (10) ◽  
pp. 1650128 ◽  
Author(s):  
Sevilay Cetin
Keyword(s):  
Energy Transfer ◽  
Boost Converter ◽  
Maximum Efficiency ◽  
Current Stress ◽  
Zero Voltage Switching ◽  
Turn On ◽  
Zero Current Switching ◽  
Zero Current ◽  
Voltage Stress ◽  
Zero Voltage

This study presents an improved zero voltage switching (ZVS) boost converter with an active snubber cell providing soft switched operation for all semiconductors. The active snubber cell reduces the reverse recovery loss of the boost diode and also provides the zero voltage transition (ZVT) Turn-on and ZVS Turn-off for the boost switch. The zero current switching (ZCS) Turn-on and ZVS Turn-off for the snubber switch is also achieved. All diodes in the converter can be operated with soft switching (SS). In the snubber cell, SS energy can be transfered effectively to the output by the use of a snubber inductor and a capacitor. This energy transfer allows the use of additional parallel connected capacitor to the boost switch to provide ZVS turning off. There is no additional voltage and current stress on the boost switch and boost diode. The voltage stress of the snubber switch is also limited by the output voltage and the current stress of the snubber switch is reduced by the energy transfer to the output. SS operating of the semiconductors is maintained at very wide load ranges. The operation of the proposed converter is presented with a detailed steady state analysis. The predicted theoretical analysis is validated by a prototype with 500[Formula: see text]W output power and 100[Formula: see text]kHz operating frequency. The measured maximum efficiency values are obtained as approximately 97% and 85.4% at full load and 10% load conditions, respectively.

An AC/DC PFC Converter with Active Soft Switching Technique

2014 ◽  
Vol 3 (3) ◽  
pp. 101-121 ◽  
Author(s):  
S. Aiswariya ◽  
R. Dhanasekaran
Keyword(s):  
Power Factor ◽  
Input Voltage ◽  
Boost Converter ◽  
Soft Switching ◽  
Load Range ◽  
Turn On ◽  
Zero Current Switching ◽  
Zero Current ◽  
Output Side ◽  
Current Transition

This paper proposes an AC-DC converter with the application of active type soft switching techniques. Boost converter with active snubber is used to achieve power factor correction. Boost converter main switch uses Zero Voltage Transition switching for turn on and Zero Current Transition switching for turn off. The active snubber auxillary switch uses Zero Current Switching for both turn on and turn off. Since all the switches of the proposed circuit are soft switched, overall component stress has been greatly reduced and the output DC voltage is expected to have low ripples. A small amount of auxillary switch current is made to flow to the output side by the help of coupling inductor. The proposed circuit is simulated using MATLAB Simulink. All the related waveforms are shown for the reference. The power factor is measured as 0.99 showing that the input current and input voltage is in phase with each other. The PFC circuit has very less number of components with smaller size and can be controlled easily at a wide line and load range.

scholarly journals Implementation of Interleaved Three Stage Boost Converter Fed Dc Drive With Zero-Voltage Transition

2019 ◽  
Vol 8 (6S2) ◽  
pp. 1-6
Keyword(s):  
Boost Converter ◽  
Two Phase ◽  
Turn On ◽  
Open Circle ◽  
Three Phase ◽  
Dc Drive ◽  
Current Mood ◽  
Zero Voltage

This paper manages reenactment of Voltage Controlled PFC based interleaved support Converter sustained DC engine Drive in open circle . An epic delicate exchanging interleaved coupled-inductor support converter is proposed in this paper. Just a solitary dynamic delicate exchanging module is expected to all the while accomplish the delicate exchanging property of the two switches in the interleaved coupled-inductor support converter. The better productivity is accomplished with the less segments and cost. The two principle switches can accomplish the ZVT turn-on and littler current mood killer at the same time when the single dynamic delicate exchanging module is dynamic. The aftereffects of three phase ILBC are contrasted and those of two phase ILBC.. [1],[ 3],[5]

Operation Region Selector Circuit to Obtain Maximum Efficiency of 250 W Boost Converter

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Riz Rifai O. Sasue ◽  
Eka Firmansyah ◽  
Suharyanto Suharyanto
Keyword(s):  
Load Condition ◽  
Current Mode ◽  
Boost Converter ◽  
Maximum Efficiency ◽  
Light Load ◽  
Zero Current Switching ◽  
Zero Current ◽  
Interleaved Boost Converter ◽  
Conduction Mode ◽  
Load Conditions

Interleaved boost converter gives good conversion efficiency due to its zero-current switching capability when operating in discontinuous conduction mode while keeping its input-output ripple current low. However, operating this kind of converter at interleaved operation for all the time gives poor efficiency under light-load condition. In this paper, an automatic operation region selector switch based on detection of the continuous or discontinuous current mode is proposed. With this switch, during the light-load condition, only one converter is activated, while during full-load condition both converters will be activated. The simulation results using LTspice software show that the proposed boost converter has a better efficiency compared to the conventional boost converter with efficiency range of 84.6 % to 95.32 % under various load conditions.

scholarly journals Simple Structure of Soft Switching for Boost Converter

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5448
Author(s):  
Yeu-Torng Yau ◽  
Kuo-Ing Hwu ◽  
Jenn-Jong Shieh
Keyword(s):  
Frequency Control ◽  
Resonance Method ◽  
Boost Converter ◽  
Soft Switching ◽  
Constant Frequency ◽  
Zero Voltage Switching ◽  
Current Switching ◽  
Zero Current Switching ◽  
Zero Current ◽  
Zero Voltage

A soft switching boost converter, with a small number of components and constant frequency control, is proposed herein by using the quasi-resonance method and the zero-voltage-transition method, realizing (1) the zero-voltage switching during the switch-on transient of the main switch, (2) the zero-current switching during the switch-off transient of the main switch, (3) the zero-current switching during the switch-on transient of the auxiliary switch, and (4) the zero-current switching during the switch-off transient of the auxiliary switch. Accordingly, the corresponding efficiency can be improved. The feasibility and effectiveness of the proposed structure are validated by the field programmable gate array (FPGA).

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