Owing to the advantages of high efficiency,high energy density,electrical isolation,low electromagnetic interference(EMI)and harmonic pollution,magnetic integration,wide output ranges,low voltage stress,and high opera...Owing to the advantages of high efficiency,high energy density,electrical isolation,low electromagnetic interference(EMI)and harmonic pollution,magnetic integration,wide output ranges,low voltage stress,and high operation frequency,the LLC resonant converters are widely used in various sectors of the electronics-based industries.The history and development of the LLC resonant converters are presented,their advantages are analyzed,three of the most popular LLC resonant converter topologies with detailed assessments of their strengths and drawbacks are elaborated.Furthermore,an important piece of research on the industrial applications of the LLC resonant converters is conducted,mainly including electric vehicle(EV)charging,photovoltaic systems,and light emitting diode(LED)lighting drivers and liquid crystal display(LCD)TV power supplies.Finally,the future evolution of the LLC resonant converter technology is discussed.展开更多
提出了一种新型的双有源桥(Dual Active Bridge,DAB)LCC谐振双向DC-DC变换器,将LCC谐振槽应用到传统的DAB双向DC-DC变换器中。分析了正向传输功率时,该变换器具有的变压器原边开关管零电压开关(zero voltage switching,ZVS)和副边整流...提出了一种新型的双有源桥(Dual Active Bridge,DAB)LCC谐振双向DC-DC变换器,将LCC谐振槽应用到传统的DAB双向DC-DC变换器中。分析了正向传输功率时,该变换器具有的变压器原边开关管零电压开关(zero voltage switching,ZVS)和副边整流二极管零电流开关(zero current switching,ZCS)的优点,同时,还分析了反向功率传输时的buck工作模式。仿真和实验结果证明:该变换器可以实现功率双向传输并实现开关管的ZVS和ZCS开关。展开更多
该文研究了LCLC谐振变换器在空间行波管放大器中的应用。基于电路分析的方法,研究了工作于零电压和零电流状态下的LCLC谐振电路的工作原理,并得到了各个工作模式的等效电路;基于该电路的工作原理,推导了该电路的参数;为验证分析的正确性...该文研究了LCLC谐振变换器在空间行波管放大器中的应用。基于电路分析的方法,研究了工作于零电压和零电流状态下的LCLC谐振电路的工作原理,并得到了各个工作模式的等效电路;基于该电路的工作原理,推导了该电路的参数;为验证分析的正确性,在PSIM仿真软件中对其进行仿真,并将仿真结果与计算结果进行了对比,仿真结果与分析结果高度一致;最后,设计了输入20 V,输出4600 V,开关频率200 k Hz,输出功率280W,效率高达93.38%的LCLC谐振变换器。仿真结果与实验结果都证实了分析的有效性。展开更多
基金Supported by the National Natural Science Foundation of China(51907032)the Natural Science Foundation of Guangdong Province(2018A030313365).
文摘Owing to the advantages of high efficiency,high energy density,electrical isolation,low electromagnetic interference(EMI)and harmonic pollution,magnetic integration,wide output ranges,low voltage stress,and high operation frequency,the LLC resonant converters are widely used in various sectors of the electronics-based industries.The history and development of the LLC resonant converters are presented,their advantages are analyzed,three of the most popular LLC resonant converter topologies with detailed assessments of their strengths and drawbacks are elaborated.Furthermore,an important piece of research on the industrial applications of the LLC resonant converters is conducted,mainly including electric vehicle(EV)charging,photovoltaic systems,and light emitting diode(LED)lighting drivers and liquid crystal display(LCD)TV power supplies.Finally,the future evolution of the LLC resonant converter technology is discussed.
文摘提出了一种新型的双有源桥(Dual Active Bridge,DAB)LCC谐振双向DC-DC变换器,将LCC谐振槽应用到传统的DAB双向DC-DC变换器中。分析了正向传输功率时,该变换器具有的变压器原边开关管零电压开关(zero voltage switching,ZVS)和副边整流二极管零电流开关(zero current switching,ZCS)的优点,同时,还分析了反向功率传输时的buck工作模式。仿真和实验结果证明:该变换器可以实现功率双向传输并实现开关管的ZVS和ZCS开关。
文摘该文研究了LCLC谐振变换器在空间行波管放大器中的应用。基于电路分析的方法,研究了工作于零电压和零电流状态下的LCLC谐振电路的工作原理,并得到了各个工作模式的等效电路;基于该电路的工作原理,推导了该电路的参数;为验证分析的正确性,在PSIM仿真软件中对其进行仿真,并将仿真结果与计算结果进行了对比,仿真结果与分析结果高度一致;最后,设计了输入20 V,输出4600 V,开关频率200 k Hz,输出功率280W,效率高达93.38%的LCLC谐振变换器。仿真结果与实验结果都证实了分析的有效性。
