Title :
Class E2 DC/DC converter with second harmonic resonant class E inverter and Class E rectifier
Author :
Koizumi, Hirotaka ; Iwadare, Minoru ; Mori, Shinsaku
Author_Institution :
Dept. of Electr. Eng., Keio Univ., Yokohama, Japan
Abstract :
Class E amplifiers have been used as inverters for highly efficient DC/AC energy conversion. ZVS-Class E inverters need an RF choke and ZCS-types have the turn-on switching loss increasing with operating frequency. Both types have nonzero power loss in the on-state resistance of the active switch. The second harmonic resonant Class E inverter has no RF choke and has small power dissipation in parasitic resistance since the shunt capacitor and inductor resonate at the second harmonic of the operating frequency. In this paper, a new type of Class E2 converter is proposed and verified experimentally. It consists of the second harmonic resonant Class E inverter and a Class E rectifier. The maximum efficiency achieved was 81.8 percent at 1 MHz
Keywords :
invertors; power convertors; power system harmonics; rectifiers; rectifying circuits; switching circuits; 1 MHz; 81.8 percent; Class E rectifier; Class E2 DC/DC converter; DC/AC energy conversion; RF choke; ZCS; ZVS; active switch; inductor; nonzero power loss; on-state resistance; parasitic resistance; second harmonic resonant class E inverter; shunt capacitor; turn-on switching loss; zero current switching; zero voltage switching; Energy conversion; Inductors; Inverters; Power dissipation; Power system harmonics; Radio frequency; Radiofrequency amplifiers; Resonance; Switches; Switching loss;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1994. APEC '94. Conference Proceedings 1994., Ninth Annual
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-1456-5
DOI :
10.1109/APEC.1994.316288
