Title :
The infeasibility of self-regulating constant-current-fed class E power inverters
Author :
Zulinski, Robert E. ; Mandojana, Julio C. ; Herman, Kelly J.
Author_Institution :
Dept. of Electr. Eng., Michigan Technol. Univ., Houghton, MI, USA
fDate :
4/1/1990 12:00:00 AM
Abstract :
Because of their high operating efficiency, class E circuits have been shown to be useful in high-frequency power inverters and converters. Typical circuits are constant-fed, i.e. they require an RF choke in the DC-feed line, and must obtain load regulation by means of appropriate feedback control. A class E inverter with finite DC-feed inductance that provides perfect load regulation without feedback control has been suggested. However, such class E circuits generally have higher sensitivities to component variations (except load resistance) than do their constant-current-fed counterparts. Thus, the possibility of load-independent operation of constant-current-fed class E inverters is of interest. The authors show that there is no way to configure constant-current-fed E inverter so that it will exhibit load-independent properties except for a trivial circuit with zero output voltage
Keywords :
invertors; network analysis; power convertors; switching circuits; HF convertors; RF choke; class E; constant-current-fed; finite DC-feed inductance; high operating efficiency; high-frequency power inverters; load regulation; load-independent properties; power inverters; self-regulating; switching mode operation; Bandwidth; Circuits; Digital filters; Feedback control; Finite impulse response filter; Frequency estimation; Inverters; Linear programming; Passband; Switches;
Journal_Title :
Circuits and Systems, IEEE Transactions on