An ultra-wide gain range adjustment method for l-llc resonant converter
A technology of resonant converter and adjustment method, which is applied in the direction of adjusting electrical variables, control/regulating systems, converting DC power input to DC power output, etc., can solve the limited gain range of L-LLC topology and the unsatisfactory output voltage range. and other problems, to achieve the effect of retaining the soft switching characteristics, eliminating the bias, and improving the voltage regulation ability.
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[0054] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0055] The present invention provides an ultra-wide gain range adjustment method for an L-LLC resonant converter, which is applied to an L-LLC bidirectionally isolated DC power electronic transformer with auxiliary inductance. The following is combined with the attached Figure 1-5 , the DC power electronic transformer topology that can perform full-bridge topology to half-bridge topology for L-LLC provided by the present invention is described in detail. figure 1 is a schematic structural diagram of an L-LLC full-bridge topology in an embodiment of the present invention, figure 2 and image 3 It is two structural schematic diagrams of L-LLC full-bridge topology switching to half-bridge topology in the embodiment of the present invention. The L-LLC resonant converter is composed of a primary side H bridge, a medium and high frequency transformer, a secondar...
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