Advantages of Full bridge converter | disadvantages of Full bridge converter
This page covers advantages and disadvantages of Full bridge DC-DC converter, its Circuit and working operation. It mentions benefits or advantages of Full bridge converter and drawbacks or disadvantages of Full bridge converter.
What is Full bridge converter?
About DC to DC converter:
A dc-dc converter is electronic circuit. The main function of this circuit is to modify one potential difference(i.e. voltage) level to the another potential difference level. It is basically a voltage regulator consisting of switches, inductor and capacitor for power conversion. There are numerous applications of DC-DC converter.
DC-DC converters are divided into following types based on isolation between input and output circuits.
• Isolated DC-DC converter and Non-isolated DC-DC converter
Isolated DC-DC converters are further divided into following sub types.
• Fly-back • Forward • Half bridge • Full bridge • Push Pull
About Full bridge converter circuit working operation:
The figure depicts Full bridge converter circuit. The Full bridge converter can be adapted as an efficient converter. It is known as the zero voltage switching (ZVS) phase shift converter where each side of the bridge is driven by essentially a square wave and the relative phase shift of the square waves is adjusted to control the transferred power. It is the most trendy DC-C chopper due to low circulating reactive energy, moderate device stresses, ZVS operation, high efficiency and Caused switching frequency. By connecting in series a DC blocking capacitor and a storable inductor with the primary winding, during the freewheeling interval the current on the primary can be reduced to nil. The circuit diagram is as shown in the figure.
Benefits or advantages of Full bridge converter
Following are the benefits or advantages of Full bridge converter:
➨The full bridge (FB) converter is used in the application of a high voltage requirement.
➨It offers slightly more voltage ripple than the half-bridge converter.
➨It uses four diodes, in its place of just clipping off half the wave, it changes the polarity of half wave.
Drawbacks or disadvantages of Full bridge converter
Following are the drawbacks or disadvantages of Full bridge converter:
➨FB has an efficiency of 95 % and the half-bridge (HB) an efficiency of 99 % and therefore it is slightly more efficient than the full-bridge.
➨The FB electrical converter is analogous to the HB inverter, however, it's an extra segment to attach the ground point to the load.
➨FB would have larger losses and noise than the HB as a result of the FB having more switching elements.
Conclusion: In order to understand the advantages of Full bridge converter and disadvantages of Full bridge converter one has to understand Full bridge converter basics.