Multi-input DC modular electrical system and control method thereof

Abstract

The invention provides a multi-input direct-current modular electrical system and a control method thereof. The multi-input DC modular electrical system comprises two or more AC / DC modules and two or more DC / DC modules. The AC / DC modules are connected in parallel. The input ends of the AC / DC modules are connected with an external AC power source. The output ends of the AC / DC modules are connected with DC buses. The output end of each AC / DC module outputs DC high voltage. The AC / DC modules are in communication connection. The input ends of the DC / DC modules are connected to the output ends of the AC / DC modules through the DC buses. The output ends of the DC / DC modules are used for being connected with DC low-voltage loads. The output ends of the DC / DC modules output DC voltage. According to the multi-input direct-current modular electrical system and the control method thereof, multiple rectifying modules are controlled, the capacities of the multiple modules are deployed, in this way, energy deploying of multi-input rectifying modules is achieved, and the multi-input rectifying modules can share the buses; the problem that when the load of a direct-current electrical system is increased, the front-end rectifying module system is insufficient in capacity is solved; energy deploying of multiple rectifying modules is achieved.

Description

technical field [0001] The invention relates to the electrical field, in particular to a multi-input DC modular electrical system and a control method thereof. Background technique [0002] In the design of DC electrical system, when the load is too much, the rectification part of the front end will be insufficient to meet the needs of more loads. Contents of the invention [0003] In view of the status quo of the prior art, the purpose of the present invention is to provide a multi-input DC modular electrical system and its control method, to solve the problem of energy allocation of multi-input rectification modules, and to solve the problem of front-end rectification when the load increases in the DC electrical system. The problem of insufficient capacity of the module system solves the problem of energy allocation among multiple rectification modules. To achieve the above object, the technical scheme of the present invention is as follows: [0004] A multi-input DC m...

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Problems solved by technology

[0003] In view of the status quo of the prior art, the purpose of the present invention is to provide a multi-input DC modular electrical system and its control method, to solve the problem of energy allocation of multi-input rectification modules, and to solve the problem of front-end rectification when the load increases in the DC electrical system. The problem of insufficient capacity of the module system solves the problem of energy allocation among multiple rectification modules

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