An inductive energy storage type isolated dc-dc converter and its control method
A DC-DC, isolated technology, applied in the direction of adjusting electrical variables, control/regulation systems, DC power input conversion to DC power output, etc., can solve problems such as large volume, numerous stray parameters, and difficulty in mastering principles, and achieve Enhanced common-mode noise suppression capability, realizing the effect of buck-boost conversion
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Embodiment 1
[0030] Such as figure 1 As shown, one aspect of the present invention provides an inductive energy storage type isolated DC-DC converter, including a primary side loop, a secondary side loop and a controller.
[0031] The primary side loop includes the first power semiconductor switching element T 1U , the second power semiconductor switching element T 1M , the third power semiconductor switching element T 1L and the first capacitor, the first power semiconductor switching element T 1U , the second power semiconductor switching element T 1M , the third power semiconductor switching element T 1L are sequentially connected in series and form a first series branch, the first capacitor C 1 with the first series branch and the primary side DC voltage source V 1 in parallel. The first power semiconductor switching element T 1U and the second power semiconductor switching element T 1M There is a first node H between 1 , the second power semiconductor switching element T 1M...
Embodiment 2
[0041] Such as image 3 As shown, the other features of this embodiment are the same as those of Embodiment 1, the only difference is that the power semiconductor switching elements are IGBT, reverse conduction IGBT, IGBT and diode in series, and diode.
Embodiment 3
[0043] Such as Figure 4 As shown, the other features of this embodiment are the same as those of Embodiment 1, the only difference is that the series combination of power semiconductor switching elements is sequentially from left to right the series connection of IGBTs, the series connection of reverse conduction IGBTs, and the series combination of IGBTs and diodes. The overall series connection, the series connection of diodes, and the anti-series connection of reverse conduction IGBT.
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