8th International Conference on Power Electronics - ECCE Asia 2011
DOI: 10.1109/icpe.2011.5944387
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Cited by 46 publications
(16 citation statements)
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“…Furthermore, for values C add greater than 1000 pF it is not possible to achieve zero output power by increasing the switching frequency f sw for the exemplary IPT system. Because under very light load conditions the stray inductance L 1 (respectively L 2 ) and the rectifier diodes capacitances form a series resonant LC circuit which transfers energy to the secondary side driven by the voltage transition of the primary inverter and prevents to achieve zero output power [19]. In addition, the minimum frequency, where ZVS for the primary inverter is still achievable, decreases also with increasing capacitance values (C j + C add ) of the output rectifier diodes.…”
Section: A Step-up Operation Modementioning
confidence: 99%
See 1 more Smart Citation
“…Furthermore, for values C add greater than 1000 pF it is not possible to achieve zero output power by increasing the switching frequency f sw for the exemplary IPT system. Because under very light load conditions the stray inductance L 1 (respectively L 2 ) and the rectifier diodes capacitances form a series resonant LC circuit which transfers energy to the secondary side driven by the voltage transition of the primary inverter and prevents to achieve zero output power [19]. In addition, the minimum frequency, where ZVS for the primary inverter is still achievable, decreases also with increasing capacitance values (C j + C add ) of the output rectifier diodes.…”
Section: A Step-up Operation Modementioning
confidence: 99%
“…Both methods, FHA and TDS, have the disadvantage that they do not account for the secondary side rectifier diodes junction capacitances and their significant influences on converter output characteristic, which represents the most important point for design considerations. In literature the influence of the [19]. Other authors discuss the influence of the junction capacitances only rudimentary within the scope of loss analysis in resonant converters [20]- [22].…”
mentioning
confidence: 99%
“…C pc represents the total parasitic capacitances of the rectifier diodes and transformer windings. C r_PC represents parasitic capacitance of resonant inductor, which has not been considered in former work [21]. In our LLC converter, C r_PC = 0.2 nF.…”
Section: Actual Fha Model Analysis Including Parasitic Capacitorsmentioning
confidence: 99%
“…The LLC converters may always work at light load condition. So the problem of the upturn of the LLC voltage gain at high frequencies given in [21] will be inescapable. According to experiments, the light load gain is so high that the required voltage (630 V DC or 400 V DC) cannot be restrained.…”
Section: Existing Problem Descriptionmentioning
confidence: 99%
“…FHA에 따라 기본 주파수 성분만 출력 파워에 전달된다 고 할 때, 그림 2와 같은 공진 탱크를 구성할 수 있으 며, 이를 통하여 LLC 컨버터의 이득을 구하면 [10]- [11] . 앞서 언급한 경 부하 시의 레귤레이션이 안 되는 문 제점을 보완하기 위해서 PDP나 어댑터 등의 제품에서 는 극 경부 하 또는 무 부하 상태에서의 안정적인 동작 을 보장하기 위하여 더미 부하를 달아주어 일정 전력을 지속적으로 소모하는 방법을 사용한다 [10] .…”
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