Isolated Bi-directional DC-DC converter's performance and analysis with Z-source by using PWM control strategy

In This paper we are presenting a bidirectional DC-DC converter is also known as dual active bridge (DAB) dc-dc converter. We presented a Z-source with bidirectional dc-dc converter by reducing the switching count by adding the passive elements we are improving the output voltage level, Comparing with the traditional bidirectional dc-dc converter, the proposed converter has an wider regulation range of voltage. The fully bridge symmetrical circuit configuration, is neither a highvoltage side nor a low-voltage side in the circuit structure, and the sources connected to the dc side of each H-bridge circuit with voltage sources and current sources. This method can reduce current stress and improves the system efficiency. Both simulation results shown by using an MATLAB software.