01-03-2013, 11:05 AM
New type T-Source inverter
ABSTRACT
Inverters with variable voltage which have an input from a low voltage dc source ie, a PV battery are mostly realized in the following three basic three topologies. a) VSI + dc/dc Boost converter without transformer b)PWM VSI + dc/dc boost converter with transformer c)PWM CSI. There is a continuous effort to find newer and better solutions. A more interesting solution utilizes a Z-source inverter.
This paper outlines the most significant alternative passive networks and there selected applications in inverters. The goal of this paper is to present a topology similar to that of ZSI with use of impulse transformer with small inductive leakage. The indirect goal is to demonstrate, with the help of above mentioned transformer, that in this topology it is possible to increase the output voltage. The LC lattice applied in the ZSI successfully replaces the dc-dc input stage in boost-type voltage source inverters. The LC lattice applied in the ZSI successfully replaces the dc-dc input stage in boost type voltage source inverters. To minimize the Z-source size the couple inductors are designed, and the two inductors are built together on one core. The possibility of extending the operation range of ZSI, the use of a low leakage inductance transformer and one capacitor instead of the LC-lattice is proposed. A high frequency transformer based T-source inverter (TSI) is developed in this section.