Recently,the memory elements-based circuits have been addressed frequently in the nonlinear circuit theory due to their unique behaviors.Thus,the modeling and characterizing of the mem-elements become essential.In thi...Recently,the memory elements-based circuits have been addressed frequently in the nonlinear circuit theory due to their unique behaviors.Thus,the modeling and characterizing of the mem-elements become essential.In this paper,the analysis of the multiple fractional-order voltage-controlled memcapacitors model in parallel connection is studied.Firstly,two fractional-order memcapacitors are connected in parallel,the equivalent model is derived,and the characteristic of the equivalent memcapacitor is analyzed in positive or negative connection.Then a new understanding manner according to different rate factor K and fractional orderαis derived to explain the equivalent modeling structure conveniently.Additionally,the negative order appears,which is a consequence of the combination of memcapacitors in different directions.Meanwhile,the equivalent parallel memcapacitance has been drawn to determine that multiple fractional-order memcapacitors could be calculated as one composite memcapacitor.Thus,an arbitrary fractional-order equivalent memcapacitor could be constructed by multiple fractional-order memcapacitors.展开更多
Hydrogen energy plays an important role in achieving carbon neutralization,and plasma induced hydrogen is an effective production method.One challenge is how to guarantee high efficiency operation with wide power outp...Hydrogen energy plays an important role in achieving carbon neutralization,and plasma induced hydrogen is an effective production method.One challenge is how to guarantee high efficiency operation with wide power output range of the RF inverter system used to generate the plasma.In this paper,a multi-module parallel topology of a high-frequency inverter is analyzed,in which the power combining network can maintain the soft switching characteristics of the inverter modules.A control method of"ON/OFF+phase shift"is adopted to broaden the output power range of the inverter.The equivalent impedances of different modules are analyzed in detail.A four-module 13.56 MHz high-frequency inverter prototype is built and tested.The results show that the inverter can operate at high efficiency and wide output power range with efficiency improved by at least 5%compared with the traditional parameter design method without considering the effect of paralleled modules.展开更多
基金the National Natural Science Foundation of China(Grant No.52077160).
文摘Recently,the memory elements-based circuits have been addressed frequently in the nonlinear circuit theory due to their unique behaviors.Thus,the modeling and characterizing of the mem-elements become essential.In this paper,the analysis of the multiple fractional-order voltage-controlled memcapacitors model in parallel connection is studied.Firstly,two fractional-order memcapacitors are connected in parallel,the equivalent model is derived,and the characteristic of the equivalent memcapacitor is analyzed in positive or negative connection.Then a new understanding manner according to different rate factor K and fractional orderαis derived to explain the equivalent modeling structure conveniently.Additionally,the negative order appears,which is a consequence of the combination of memcapacitors in different directions.Meanwhile,the equivalent parallel memcapacitance has been drawn to determine that multiple fractional-order memcapacitors could be calculated as one composite memcapacitor.Thus,an arbitrary fractional-order equivalent memcapacitor could be constructed by multiple fractional-order memcapacitors.
基金funded by National Natural Science Foundation of China under grant 52007041.
文摘Hydrogen energy plays an important role in achieving carbon neutralization,and plasma induced hydrogen is an effective production method.One challenge is how to guarantee high efficiency operation with wide power output range of the RF inverter system used to generate the plasma.In this paper,a multi-module parallel topology of a high-frequency inverter is analyzed,in which the power combining network can maintain the soft switching characteristics of the inverter modules.A control method of"ON/OFF+phase shift"is adopted to broaden the output power range of the inverter.The equivalent impedances of different modules are analyzed in detail.A four-module 13.56 MHz high-frequency inverter prototype is built and tested.The results show that the inverter can operate at high efficiency and wide output power range with efficiency improved by at least 5%compared with the traditional parameter design method without considering the effect of paralleled modules.
