This project presents an impedance-source (or
impedance-fed) power converter (abbreviated as Z-source converter) and its control method for implementing dc-to-ac, ac-to-dc,
ac-to-ac, and dc-to-dc power conversion. The Z-source converter
employs a unique impedance network (or circuit) to couple the
converter main circuit to the power source, thus providing unique
features that cannot be obtained in the traditional voltage-source
(or voltage-fed) and current-source (or current-fed) converters
where a capacitor and inductor are used, respectively. The
Z-source converter overcomes the conceptual and theoretical
barriers and limitations of the traditional voltage-source converter
(abbreviated as V-source converter) and current-source converter
(abbreviated as I-source converter) and provides a novel power
conversion concept. The Z-source concept can be applied to all
dc-to-ac, ac-to-dc, ac-to-ac, and dc-to-dc power conversion. To
describe the operating principle and control, this paper focuses
on an example: a Z-source inverter for dc-ac power conversion
needed in fuel cell applications. Simulation and experimental
results will be presented to demonstrate the new features.
THIS IS THE FIRST TECHNICAL PAPER ON Z SOURCE INVERTER.
 For any z source inverter new technical papers reach me at ashok_...@yahoo.co.in