Energy router with cascaded module voltage automatic balancing circuit

Abstract

The present invention discloses an energy router with a cascaded module voltage automatic balancing circuit, belonging to the technical field of power electronic converters. The energy router is formed by a rectifier level, a dual active bridge and an inverter level and comprises three ports which are a high voltage AC port, a low voltage AC port and a low voltage DC port to the outside. N H-bridge rectifier modules are in cascade connection to form the rectifier level, n dual active bridge modules are in cascade connection to form the dual active bridge, and the inverter level is formed by a three-phase H bridge module. Each of the dual active bridge modules is internally provided with a cascade module voltage automatic balancing circuit. According to the energy router, the control of the respective bus voltage balance of each cascade module by a controller can be avoided, the requirements of energy router controller operation sources are reduced, the number of sensors and the collection channels of the controller are reduced at the same time, and when the number of the cascade modules is large, the structure has a large advantage.

Description

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AI Technical Summary

Benefits of technology

This new design allows an electricity metering device (EPM) to have multiple power circuits connected together through switches or other components like relays. Each component has its own unique electrical characteristics such as current flow direction and impedance values. When there are too many devices on one line, they may cause imbalances between different parts of their system due to differences in voltages across them. To prevent these issues from affecting performance, each unit's EPM needs to be able to adjust itself based upon any changes made during operation without consuming excessive computational effort.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the efficiency and reliability of energy networks with converged renewed generators called Multiplex Load Convergence Group Intermediate Bus Capacitive Transformer (MCI). Current solutions involve complex hardware systems like Active Distributed Generation Systems (ADS) and hybrid bridges. However, they require expensive components and may result in increased complexity and cost issues due to their own design features.

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