A bi-directional dc-dc converter mixed with llc and dab
A DC-DC and converter technology, applied in the field of converters, can solve the problems of increasing the complexity of the overall module of the converter, difficulty in soft-switching control at light loads, and reducing the reliability of the system, so as to simplify the circuit layout design, switching The effect of high power efficiency and simple voltage regulation control
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[0042] The present invention will be further described below. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0043] see figure 1 , the present invention provides a bidirectional DC-DC converter mixed with LLC and DAB, including 1 H-bridge circuit, 2 LLC resonant cavities sharing split resonant capacitors, 2 isolation transformers with the same transformation ratio and a three-phase half-bridge Full control circuit.
[0044] details as follows:
[0045] The H-bridge circuit includes two left and right half-bridges, the left half-bridge circuit includes two MOSFET tubes S1, S2; the right half-bridge circuit includes two MOSFET tubes S3, S4.
[0046]The first LLC resonant cavity circuit includes a resonant inductor Lr1, split resonant capacitors Cr1 and Cr2, and a magnetizing inductance Lm1 corresponding to the isolation transformer T1. The same-...
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