DC To DC Converter With Soft Switching Capability

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Description

DC To DC Converter With Soft Switching Capability

ABSTRACT:

A new method for deriving isolated DC-DC converter with single-stage power conversion is proposed in this project. The semiconductors, conduction losses, and switching losses are reduced significantly by integrating the interleaved DC converters into the full-bridge diode-rectifier. Various high-frequency bridgeless DC rectifiers are harvested based on different types of interleaved DC converters, including conventional DC converters and high step-up DC converters with soft switching.


EXISTING SYSTEM:

The non-isolated DC cell in the non-isolated two-switch DC-DC converter with an isolated DC cell, the structure of the IBB converters presented. Although a wide voltage gain range with flexible control can be achieved, it should be noted that the conversion efficiency will be hurt by the cascaded two-stage conversion architecture due to the additional conduction and switching losses.


PROPOSED SYSTEM:

Based on the proposed dc to dc converter with soft switching capability can be derived by employing the input stage of an isolated DC converter as the primary-side circuit of the IBB converters. The primary-side circuit can be full-bridge, half-bridge, or three-level half-bridge, etc., as shown. Since the focus of this paper is the DC rectifiers, only the IBB converter topologies with full-bridge input stage are shown. Obviously, the input stage of the IBB converter is a DC-cell, and the two cells are linked by a high-frequency inductor and transformer. This structure is similar to the non-isolated two-switch DC-DC converter.


BLOCK DIAGRAM:

DC To DC Converter With Soft Switching Capability 9

DC To DC Converter With Soft Switching Capability 4

BLOCK DIAGRAM EXPLANATION:

The input supply is fed to the isolated DC-DC converter. Present-day fast converters operate at much higher switching frequencies chiefly to reduce the weight and size of the filter components. As a consequence, switching losses now tend to predominate, causing the junction temperatures to rise. Special techniques are employed to obtain clean turn-on and turn-off of the devices. And the converter operates depending on the load. The converter is controlled by a driver circuit and operates by using a PIC controller.

HARDWARE REQUIREMENTS:

  • PIC ControllerDC To DC Converter With Soft Switching Capability 3
  • Driver Board

Full Range Soft Switching Buck Boost with PI 3

SOFTWARE REQUIREMENTS:

  • Matlab/ Simulink

ADVANTAGES:

  • The voltage stresses of the semiconductor in the DC-rectifier are reduced significantly due to the voltage multiplier. Hence low voltage rated devices with better conduction and switching performance can be used to improve efficiency.
  • Soft switching within the whole operating range has been achieved for all of the active switches and diodes respectively by adopting the optimized phase shift control.

RESULT:

DC To DC Converter With Soft Switching Capability 1 1

 

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