A novel quasi-resonant DC-DC converter using phase-shift modulation in secondary side of high-frequency transformer

2002 ◽  
Author(s):  
M. Michihira ◽  
T. Funaki ◽  
K. Matsu-ura ◽  
M. Nakaoka
Keyword(s):  
Phase Shift ◽  
High Frequency ◽  
High Frequency Transformer ◽  
Secondary Side

scholarly journals Operation analysis of quasi-resonant high-frequency transformer link DC-AC converter applied for phase-shift PWM control in secondary side

1997 ◽  
Vol 117 (12) ◽  
pp. 1503-1510 ◽  
Author(s):  
Masakazu Michihira ◽  
Mitsuo Ueda ◽  
Tsuyoshi Funaki ◽  
Zen-Ichiro Kawasaki ◽  
Kenji Matsu-ura
Keyword(s):  
Phase Shift ◽  
High Frequency ◽  
Pwm Control ◽  
Operation Analysis ◽  
High Frequency Transformer ◽  
Secondary Side

scholarly journals Operation analysis of high-frequency AC link three-phase DC-AC converter applying phase-shift PWM control in secondary side

1999 ◽  
Vol 119 (5) ◽  
pp. 659-669 ◽  
Author(s):  
Masakazu Michihira ◽  
Takayuki Ota ◽  
Minwon Park ◽  
Tsuyoshi Funaki ◽  
Zen-Ichiro Kawasaki ◽  
...  
Keyword(s):  
Phase Shift ◽  
High Frequency ◽  
Pwm Control ◽  
Operation Analysis ◽  
Three Phase ◽  
High Frequency Ac ◽  
Secondary Side

scholarly journals Single Input Single Output Two Level Isolated Dc-Dc Converter With Secondary Side Phase Shifting For Solar Applications

2021 ◽  
Vol 9 (2) ◽  
pp. 433-442
Author(s):  
K.Girinath Babu, Et. al.
Keyword(s):  
High Frequency ◽  
Power Loss ◽  
Short Circuit ◽  
Soft Switching ◽  
Phase Shifting ◽  
Single Input Single Output ◽  
Leakage Inductance ◽  
Circulating Current ◽  
High Frequency Transformer ◽  
Secondary Side

 The isolated dc–dc converters with primary-side phase shifting (PPS) provides severely narrow soft-switching range for main devices in the primary side leg of full bridge converter. The leakage inductance of the high frequency transformer should be large enough for providing the energy needed for soft switching operations and also the idling power loss due to circulating current in the converter legs under large phase-shift angle, which makes reduction of conversion efficiency and complicated in designing the parameters of transformer. Furthermore, the turn-off diode commutations in the output-side rectifier are performed by hard-switching mode. To overcome all these drawbacks, a secondary side phase shifting (SPS) technique has been developed for two-level isolated DC-DC converter. This scheme provides wider soft switching range and reduced power loss due to elimination of circulating current in the primary side of high frequency transformer. In addition, SPS control also provide no reverse recovery current in diodes and hence no power losses in the secondary rectifier circuit. The control switches operate under soft switching even under rated load and short circuit conditions.  

Analysis and Design of an LC Parallel-Resonant DC–DC Converter for a Fuel Cell Used in an Electrical Vehicle

2018 ◽  
Vol 27 (08) ◽  
pp. 1850119 ◽  
Author(s):  
Farhani Slah ◽  
Amari Mansour ◽  
Aouiti Abdelkarim ◽  
Faouzi Bacha
Keyword(s):  
Fuel Cell ◽  
High Frequency ◽  
High Efficiency ◽  
Input Voltage ◽  
Analysis And Design ◽  
High Frequency Transformer ◽  
Zero Current Switching ◽  
Zero Current ◽  
Electrical Vehicle ◽  
Secondary Side

In this paper, the design methodology of a parallel-resonant [Formula: see text] converter for fuel cell applications in the electric vehicle is proposed in order to achieve high efficiency. Although the converter is unidirectional, it is interposed between the fuel cell and the DC link. Additionally, the converter is made up of two full bridges, an [Formula: see text] resonant filter and a planar transformer. The use of a high-frequency transformer enables to minimize the converter size and the weight, to produce a higher voltage in the secondary side from an input voltage (fuel cell) and to isolate the full bridges. Furthermore, the rectifier diodes operate with a zero-current switching. Therefore, an experimental converter prototype has been designed, simulated, built and tested in the laboratory. Finally, a prototype having 30[Formula: see text]V as an input and 150[Formula: see text]V as an output with 500[Formula: see text]W is designed to demonstrate and analyze the proposed converter.

Simulation for the Control Strategy of Three-Phase Boost-Half-Bridge (BHB) DC-DC Converter with Series Voltage Doubler Rectifiers through Three-Phase High Frequency Transformer

2013 ◽  
Vol 325-326 ◽  
pp. 533-537
Author(s):  
Amir M. Soomro ◽  
Shahnawaz F. Khahro ◽  
Xiao Zhong Liao
Keyword(s):  
Control Strategy ◽  
High Frequency ◽  
Power Balance ◽  
High Frequency Transformer ◽  
Input And Output ◽  
Three Phase ◽  
Voltage Doubler ◽  
Input Side ◽  
Simulation Results ◽  
Secondary Side

This paper presents simulation for the control strategy of three-phase boost-half-bridge (BHB) DC-DC converter with series voltage doubler rectifiers through three-phase high frequency transformer. The control strategy is consisting of three voltage loops. All the three voltage loops are independent of the input side and controls the input and output power balance from the secondary side of the high frequency transformers only. Moreover, the control strategy has been verified for its appropriate operation by simulating the above said configuration for the same turn ratios as well as for the mismatch turn ratios of high frequency transformers. Finally, the satisfactory simulation results for the proposed control strategy are presented.

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