A Novel LLC Resonant Converter Topology: Voltage Stresses of All Components in Secondary Side Being Half of Output Voltage

2006 ◽  
Author(s):  
Yilei Gu ◽  
Zhengyu Lu ◽  
Zhaoming Qian
Keyword(s):  
Output Voltage ◽  
Resonant Converter ◽  
Llc Resonant Converter ◽  
Converter Topology ◽  
Secondary Side

scholarly journals A Hybrid Soft Switching Full Bridge Converter Suitable for the Electric Vehicle Charge Applications

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2707 ◽  
Author(s):  
Tran ◽  
Tran ◽  
Choi
Keyword(s):  
Electric Vehicle ◽  
Output Power ◽  
Output Voltage ◽  
Soft Switching ◽  
Resonant Converter ◽  
Circulating Current ◽  
Llc Resonant Converter ◽  
Secondary Side

A hybrid dc–dc converter suitable for the on-board charger applications consisted of a Soft Switching Full Bridge (SSFB) converter and a Half Bridge (HB) LLC resonant converter is proposed. The proposed topology employs an additional switch and a diode at the secondary of the SSFB converter to eliminate the circulating current and to achieve the full soft switching of the primary switches. The output voltage is regulated by adjusting the duty of the secondary side switch. The validity and feasibility of the proposed converter are verified by the experiments with a 10-kW prototype converter. The maximum of 96.8% efficiency is achieved at 5 kW output power.

scholarly journals Optimal Design of Multi-Output LLC Resonant Converter with Independently Regulated Synchronous Single-Switched Power-Regulator

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4341
Author(s):  
Sang Gab Park ◽  
Byoung Kuk Lee ◽  
Jong Soo Kim
Keyword(s):  
Electromagnetic Interference ◽  
Resonant Converter ◽  
Switching Losses ◽  
Zero Current Switching ◽  
Zero Current ◽  
Series Resonant ◽  
Power Switches ◽  
Voltage Doubler ◽  
Llc Resonant Converter ◽  
Secondary Side

This paper presents a tightly regulated multi-output isolated converter that employs only an independently regulated synchronous Single-Switched Post-Regulator (SSPR). The proposed converter is a highly accurate single-ended secondary side post-regulator based on a Series Resonant Converter (SRC); furthermore, it has a voltage-doubler characteristic. The proposed post-regulator requires only one auxiliary switch, in contrast with a bulky and expensive non-isolated DC–DC converter. Moreover, the added voltage-doubler can tightly regulate the slave output current. In addition, the voltage-doubler can improve electromagnetic interference characteristics and reduce switching losses arising from the Zero Current Switching (ZCS) operation of all power switches. The validity of the proposed converter is verified using experimental results obtained via a prototype converter applicable to an LED 3D TV power supply.

scholarly journals A Novel Dual Integrated LLC Resonant Converter Using Various Switching Patterns for a Wide Output Voltage Range Battery Charger

Electronics ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 759
Author(s):  
Bong-Yeon Choi ◽  
Soon-Ryung Lee ◽  
Jin-Wook Kang ◽  
Won-Sang Jeong ◽  
Chung-Yuen Won
Keyword(s):  
Output Voltage ◽  
Voltage Gain ◽  
Resonant Converter ◽  
Operating Characteristics ◽  
Battery Charger ◽  
Voltage Range ◽  
Switching Pattern ◽  
Operating Frequency Range ◽  
Switching Patterns ◽  
Llc Resonant Converter

This paper proposes a novel dual integrated LLC resonant converter (DI-LRC) with a wide output voltage range using various switching patterns. The primary side of the proposed DI-LLC converter consists of two resonant tanks and six switches, while the secondary side consists of a six-pulse diode rectifier. Depending on the switching pattern of the primary switch, the DI-LRC converter is performed by single full-bridge operation with a voltage gain of 1, series-connected full-bridge operation with a voltage gain of 0.5, series-connected half bridge operation with a voltage gain of 0.25, and parallel-connected full-bridge operation with a voltage gain of 2. Accordingly, the proposed DI-LRC converter has four voltage gain curves with different variations and achieves a wider output voltage range than the conventional single voltage gain curve in a given operating frequency range. In this paper, the equivalent circuits derived for each switching pattern are proposed to analyze the operating characteristics of the proposed converter according to each switching pattern, and each Q factor and voltage gain are calculated based on the analyzed equivalent circuit. The performance of the proposed converter and switching pattern is verified using the simulation and experimental results of the prototype battery charger, which is designed to be 4-kW class.

120Hz output voltage ripple reduction of LLC resonant converter using resonant controller

Intelec 2012 ◽  
2012 ◽  
Author(s):  
Eun-Seok Choi ◽  
Byong-Chul So ◽  
Hag-Wone Kim ◽  
Kwan-Yuhl Cho ◽  
Soon-Sang Hwang ◽  
...  
Keyword(s):  
Output Voltage ◽  
Resonant Converter ◽  
Voltage Ripple ◽  
Llc Resonant Converter ◽  
Ripple Reduction ◽  
Resonant Controller

scholarly journals Accurate Design of High-Efficiency LLC Resonant Converter With Wide Output Voltage

IEEE Access ◽  
2017 ◽  
Vol 5 ◽  
pp. 26653-26665 ◽  
Author(s):  
Hengshan Xu ◽  
Zhongdong Yin ◽  
Yushan Zhao ◽  
Yongzhang Huang
Keyword(s):  
Output Voltage ◽  
High Efficiency ◽  
Resonant Converter ◽  
Accurate Design ◽  
Llc Resonant Converter
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