Multi-port energy router and control system and control method thereof

Abstract

The invention discloses a multi-port energy router. The multi-port energy router comprises at least two multi-port modules; each multi-port module comprises a first common port, a second common port and at least one other port, and the first common port is a direct-current port and is connected with a direct-current bus or suspended; the second common port is connected with an alternating currentbus or a direct current bus, and all the other ports can be customized according to actual use requirements. According to the structure, a multi-port power supply scheme with distributed characteristics can be provided, the application of various electric energy forms with different voltage levels is met, and the problem of voltage balance in the prior art can be well solved. The invention furtherdiscloses a control system and a control method of the multi-port energy router.

Description

technical field [0001] The invention belongs to the application field of power electronics, and relates to an AC / DC distribution network, a bidirectional converter and an energy router, in particular to an energy router with multiple ports and its control system and control method. Background technique [0002] Energy router, as a device used to realize power exchange in the future AC and DC distribution network, plays an important role and significance in realizing the optimal operation of power distribution systems with different power forms. The core of the energy router is the power electronic transformer, which is an intelligent device designed based on power electronic technology, which can realize functions such as power flow distribution, voltage improvement, grid monitoring and fault isolation. According to the form of medium / high voltage electric energy, power electronic transformers are also divided into AC power electronic transformers and DC power electronic tra...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a multi-port energy router and its control system and control method. On the one hand, when the traditional energy router takes the power electronic transformer of the ISOP structure as the core and externally installs some DC / DC and DC / AC equipment , leading to the problem that the power supply ports of the energy router system constructed by it are relatively concentrated. The present invention can provide a multi-port power supply solution with distributed characteristics to meet the application of various forms of electric energy with different voltage levels; on the other hand, for the existing The voltage balance problem existing in the patented technology can better solve the problem, making the implementation of the present invention more valuable

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