Hybrid energy storage topological structure on basis of MMC modular multilevel converter
A modular multi-level, hybrid energy storage technology, applied in the direction of irreversible DC power input conversion to AC power output, AC power input conversion to DC power output, electrical components, etc., can solve the problem of voltage equalization and current equalization, Differences in energy storage bodies, low voltage of energy storage cells, etc., to achieve the effects of reducing harmonic pollution, good electrical performance and control performance
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[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0038] Please refer to figure 1, the present invention provides a hybrid energy storage topology structure based on MMC modular multi-level converter, which is characterized in that: it includes a positive bridge arm and a negative bridge arm, and the positive bridge arm is composed of power conversion subunits 1 to n One end of the power conversion sub-unit 1 is connected to the high-voltage DC positive bus 2100, the power conversion sub-unit n is connected to one end of the first current limiting reactor L1; the negative bridge arm is connected by the power conversion sub-unit n +1 to 2n are connected in series in sequence, one end of the power conversion subunit 2n is connected to the high-voltage DC negative bus 2400, and the power conversion subunit n+1 is connected to one end of the second current limiting reactor L2; The conversion subunit 2200 is...
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