Cascading modularized multi-level dynamic switching DC-DC transformer
A modular multi-level, DC-DC technology, applied in the direction of adjusting electrical variables, instruments, electrical components, etc., to achieve significant economic advantages, reduce volume, and reduce the number of effects
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[0019] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0020] Such as figure 1 As shown, it is a circuit topology diagram of a modular multi-level dynamic switching DC-DC transformer. The DC-DC transformer consists of N sub-modules connected in series, U 1 , U 2 Respectively primary side, secondary side voltage; N 1 , N 2 It is the number of sub-modules invested in the primary side and secondary side.
[0021] Such as figure 2 Shown is the structure diagram of the DC-DC DC transformer sub-module. The DC-DC sub-module consists of two half-bridge sub-modules and an intermediate isolating switch. The isolating switch S 1 , S 2 Consists of IGBTs and anti-parallel diodes. The DC-DC sub-module has a symmetrical structure and can realize bidirectional power flow.
[0022] For ease of description, the figure 2 The two half-bridge structures in the shown DC-DC sub-module are referred to as a pr...
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