Download Bidirectional Single Power-Conversion DC-AC

Bidirectional Single Power-Conversion DC-AC Converter with NonComplementary Active-Clamp Circuits
Abstract
This project presents a bidirectional single power-conversion dc-ac converter with noncomplementary active-clamp circuits. In order to interface the grid with low voltage energy
storage through only single power-conversion, the bidirectional fly back converter transforms the
low voltage directly into the folded grid voltage and regulates the folded grid current. The
proposed converter adopts non complementary operation strategy for the active-clamp circuits.
By using this strategy, the bidirectional fly back converter not only avoids the voltage spike but
also minimizes the power losses by the circulating energy.
Existing method
The existing method describes to overcome this problem, active clamp circuit is used. It
operates complementary to the main device; the leakage energy is absorbed by the clamp
capacitor and the voltage spike is reduced. However, the conventional active-clamp circuit
increases the circulating energy which causes power losses in the power stage components.
Proposed method
The proposed method describes a bidirectional single power-conversion dc-ac converter
with non-complementary active-clamp circuits. Since the proposed converter interfaces the grid
directly with the low voltage battery through single power-conversion, it achieves high power
efficiency compared to the conventional two-stage approach. Also, by using bidirectional fly
back converter, the proposed converter has high voltage conversion ratio and avoids a lot of
series-connected batteries.
Further Details Contact: A Vinay9030333433, 08772261612
Email: [email protected] | www.takeoffprojects.com
Block diagram
Proposed bidirectional single power-conversion dc-ac converter with active-clamp circuits and
its control block diagram.
Advantages
 The leakage energy of the transformer causes high voltage spike on the devices,
 In turn, requires high voltage rating devices which cause high conduction loss.
Applications
 Such as fossil fuel depletion,
 Global warming,
 And carbon dioxide emissions have stimulated the growth of renewable energy sources.
Further Details Contact: A Vinay9030333433, 08772261612
Email: [email protected] | www.takeoffprojects.com