Three-Phase Three-Level Soft Switching Dc-Dc Converter for Industrial Applications

2017 ◽  
Vol 8 (2) ◽  
pp. 785
Author(s):  
J. Sivavara Prasad ◽  
Y.P. Obulesh ◽  
Ch. Sai Babu
Keyword(s):  
High Power ◽  
Control Method ◽  
Industrial Applications ◽  
Soft Switching ◽  
Load Range ◽  
Switching Losses ◽  
Shift Control ◽  
Three Phase ◽  
Control Switch ◽  
Operational Modes

In high power DC applications, the single-phase DC-DC converter will face large voltage and current stress in each control switch and thereby the power handling capacity is less. To overcome this problem, three-phase DC-DC converter is used and it is suitable for high power applications with reduced number of switches as compared with the conventional topologies. The asymmetrical duty cycle control is considered to operate the switches under soft switching and hence the switching losses are reduced. The transformer leakage inductances are used along with junction capacitances in order to form resonance and hence ZVS commutation is possible in a wider load range. The modified phase shift control method is used for the proposed converter.The operational modes and design equations of the proposed converter have been observed. The simulation is carried out with a load of 1000W for validating the proposed work.

Topological Structure of Main Circuit Inverter Based on Soft-Switching Technology and Parameters Adaptive

2013 ◽  
Vol 846-847 ◽  
pp. 732-736
Author(s):  
Jun Yan Zeng ◽  
Guang Di Li ◽  
Xue Liang ◽  
Jiao Wang ◽  
Zhi Da Li
Keyword(s):  
High Frequency ◽  
Topological Structure ◽  
Control Method ◽  
Soft Switching ◽  
Switching Power ◽  
Switching Losses

This paper presents a new topology of main circuit based on soft switching technology of ZVS-PWM. At present, hard switching is applied in most inverters. Because the switching power isnt equal to zero, a great number of losses on the switching are generated when the switching at a high frequency. To solve the fault of hard switching, this paper presents that apply the inverter circuits based on soft switching technology of ZVS-PWM to high frequency APF, which will decrease switching losses and noise greatly. The proposed topology and operation principle of the control method is discussed in detail, finally simulated results verify the effect of research.

Research on the High Frequency Realization of High-Power Inverter

2011 ◽  
Vol 383-390 ◽  
pp. 1077-1083
Author(s):  
Run Hua Liu ◽  
Gang Wang
Keyword(s):  
High Power ◽  
High Frequency ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Soft Switching ◽  
Multilevel Inverter ◽  
Switching Frequency ◽  
Switching Losses ◽  
Simulation And Experiment

The paper presents the inverter method which based on cascade multilevel inverter and MOSFET-assisted soft-switching of IGBT and modulation strategy against the double requirement of high-power inverter and high frequency. The method can effectively improve the output voltage, reduce harmonic distortion and switching losses, improve the switching frequency and meet the double requirement of the high-power inverter and high frequency. The method proved to be feasible by simulation and experiment.

Three-phase soft-switching inverter with coupled inductors, experimental results

2011 ◽  
Vol 59 (4) ◽  
pp. 535-539
Author(s):  
S. Karyś
Keyword(s):  
Control Algorithm ◽  
Control Method ◽  
Design Method ◽  
Soft Switching ◽  
Experimental Results ◽  
Efficiency Improvement ◽  
Coupled Inductors ◽  
Resonant Inverter ◽  
Three Phase ◽  
Advanced Control

Three-phase soft-switching inverter with coupled inductors, experimental results This paper presents experimental results of the three-phase soft-switching inverter with coupled inductors that verify the control method influence on efficiency improvement. Different kinds of control methods were tested on the 6 kW experimental inverter. A short discussion on a few design methods of the resonant tank elements was made. Experimental results confirm that the advanced control algorithm and the proposed new design method of the resonant tank elements significantly increase the efficiency of this resonant inverter.

Review of High Power DC/DC Soft-Switching Converters in Electrical Vehicles Application

2013 ◽  
Vol 321-324 ◽  
pp. 340-346
Author(s):  
Shuai Liu ◽  
Li Wei ◽  
Yi Cheng Zhang ◽  
Yong Tao Yao ◽  
Yun Xiong ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
High Power ◽  
Power Converters ◽  
Power Level ◽  
The State ◽  
Soft Switching ◽  
Switching Converters ◽  
Switching Losses ◽  
Electrical Vehicles ◽  
State Of Art

The application of soft-switching techniques is an important way to reduce switching losses of DC/DC converter. Aiming at the requirement of electric vehicles application, major soft-switching techniques for DC/DC converters are reviewed. Performance and design limitations are discussed. A comparison of soft-switching techniques used in high power converters of electric vehicles is presented. Through analyzing the state-of-art and existing deficiency of soft-switching techniques for DC/DC converters, it is concluded that power level upgrading, soft-switching range extending and auxiliary network simplification should be focused in the future.

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