Comparison of Bidirectional T-Source Inverter and Quasi-ZSource Inverter for Extra Low Voltage Application

Inhalt:
Inverters with impedance source networks combine their one-stage energy conversion with the function as buck and boost converters. Due to this fact they can provide output voltages that are independent from the feeding source. This makes them very attractive to a wide range of applications. In order to evaluate the performance and find the inverter that matches the application best it is essential to compare different topologies of these inverters. This paper compares a bidirectional T-Source Inverter with a bidirectional Quasi-Z-Source Inverter for extra low voltage application. The comparison is based on the analytical analysis and the experimental results which lead to a quite contrary evaluation of the performances.