scholarly journals Development of Battery Charger for Electric Vehicle using the LLC Resonant Converter

2013 ◽  
Vol 18 (5) ◽  
pp. 443-447 ◽  
Author(s):  
Gyoung-Man Kim ◽  
Jong-Uk Yoo ◽  
Tae-Kwon Kim ◽  
Chan-Ho Kang ◽  
Tae-Won Chun
Keyword(s):  
Electric Vehicle ◽  
Resonant Converter ◽  
Battery Charger ◽  
Llc Resonant Converter

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.

scholarly journals Bidirectional Resonant Converter for DC Microgrid Applications

Processes ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 1664
Author(s):  
Bor-Ren Lin
Keyword(s):  
Electric Vehicle ◽  
Output Voltage ◽  
Resonant Circuit ◽  
Resonant Converter ◽  
Battery Charger ◽  
Dc Microgrid ◽  
Voltage Range ◽  
Zero Voltage Switching ◽  
Active Devices ◽  
Power Operation

A bidirectional resonant converter is presented and verified in this paper for an electric vehicle battery charger/discharger system. The presented circuit can achieve forward and backward power operation, low switching losses on active devices, and wide output voltage operation. The circuit structure of the presented converter includes two resonant circuits on the primary and secondary sides of an isolated transformer. The frequency modulation approach is adopted to control the studied circuit. Owing to the resonant circuit characteristic, active devices for both forward (battery charge) and backward (battery discharge) power operation can be turned on at zero voltage switching. In order to implement a universal battery charger for different kinds of electric vehicle applications, the DC converter is demanded to have a wide output voltage range capability. The topology morphing between a full bridge resonant circuit and half bridge resonant circuit is selected to obtain high- and low-output voltage range operations so that the 200–500 V output voltage range is realized in the presented resonant converter. Compared to the conventional bidirectional converters, the proposed can be operated under a wide voltage range operation. In the end, a 1 kW laboratory prototype circuit is built, and experiments are provided to demonstrate the validity and performance of the presented bidirectional resonant converter.

LLC resonant converter for electric vehicle battery chargers

2016 ◽  
Vol 9 (12) ◽  
pp. 2369-2376 ◽  
Author(s):  
Chih‐Chiang Hua ◽  
Yi‐Hsiung Fang ◽  
Cheng‐Wei Lin
Keyword(s):  
Electric Vehicle ◽  
Resonant Converter ◽  
Battery Chargers ◽  
Llc Resonant Converter ◽  
Electric Vehicle Battery
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