| Abstract: | “Immittance converter” is short for “impedance–admittance converter.” The immittance converter has an input impedance that is proportional to the admittance of the load connected across output terminals. In this converter, the output current is proportional to the input voltage and the input current is proportional to the output voltage. Consequently, it converts a constant voltage source into a constant current source and a constant current source into a constant voltage source. It is well known that the quarter‐wavelength transmission line shows immittance conversion characteristics. However, it has very long line length for the switching frequency, and is not suitable for power electronics application. Thus, we proposed immittance converters that consist of lumped elements L, C and show improved immittance conversion characteristics at a resonant frequency. In this paper, we propose a T‐LCLC‐type immittance converter, which has the transitive configuration and both advantages of T‐LCL‐ and π‐CLC‐type immittance converters. We show voltage–current transformation characteristics and frequency characteristics and efficiency characteristics of the T‐LCLC immittance converter. These characteristics were determined analytically and experimentally. © 2002 Wiley Periodicals, Inc. Electr Eng Jpn, 142(3): 57–63, 2003; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.10095 |
