Modeling and behavioral SPICE simulation of a self adjusting current-fed push-pull parallel resonant inverter (SA-CFPPRI)

A modeling methodology that can be applied to power systems that include nonlinearities and phase lock loops was developed and used to model and investigate the properties of a self adjusting current-fed push-pull parallel resonant inverter (SA-CFPPRI). This topology is based on the push-pull parallel resonant inverter in which a controlled variable inductor is incorporated to keep the system at resonant frequency over a given frequency range and under a nonconstant reactive load. The analytical expression and SPICE models developed in this study were found to be in good agreement with experimental results. PSPICE/ORCAD (Cadence, USA) files (Evaluation version 9.2) of the system under study are available for download from http://www.ee.bgu.ac.il/∼pel/download.htm.