Zero voltage switching over entire load range and wide voltage variation of parallelly-connected dual-active-bridge converter using power-circulating operation

2017 ◽  
Author(s):  
Hayato Higa ◽  
Jun-ichi Itoh
Keyword(s):  
Load Range ◽  
Zero Voltage Switching ◽  
Dual Active Bridge ◽  
Voltage Variation ◽  
Zero Voltage ◽  
Voltage Switching

scholarly journals Extension of Zero Voltage Switching Capability for CLLC Resonant Converter

Energies ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 818
Author(s):  
HwaPyeong Park ◽  
DoKyoung Kim ◽  
SeungHo Baek ◽  
JeeHoon Jung
Keyword(s):  
Input Voltage ◽  
Voltage Gain ◽  
Resonant Converter ◽  
High Power Conversion Efficiency ◽  
Load Range ◽  
Zero Voltage Switching ◽  
Voltage Variation ◽  
Sinusoidal Current ◽  
Zero Voltage ◽  
Voltage Switching

TheCLLC resonant converter has been widely used to obtaina high power conversion efficiency with sinusoidal current waveforms and a soft switching capability. However, it has a limited voltage gain range according to the input voltage variation. The current-fed structure canbe one solution to extend the voltage gain range for the wide input voltage variation, butit has a limited zero voltage switching (ZVS) range. In this paper, the current-fed CLLC resonant converter with additional inductance is proposed to extend the ZVS range. The operational principle is analyzed to design the additional inductance for obtaining the extended ZVS range. The design methodology of the additional inductance is proposed to maximize the ZVS capability for the entire load range. The performance of the proposed method is verified with a 20 W prototype converter.

Dual Active Bridge Modulation with Complete Zero Voltage Switching Taking Resonant Transitions into Account

EPE Journal ◽  
2012 ◽  
Vol 22 (1) ◽  
pp. 5-12 ◽  
Author(s):  
Giuseppe Guidi ◽  
Atsuo Kawamura ◽  
Yuji Sasaki ◽  
Tomofumi Imakubo
Keyword(s):  
Zero Voltage Switching ◽  
Dual Active Bridge ◽  
Resonant Transitions ◽  
Zero Voltage ◽  
Voltage Switching
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