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Electric energy router and electric energy router control method

A router and electric energy technology, applied in the direction of invertible conversion equipment, etc., can solve the problems of many electric energy conversion stages, inability to guarantee the operation efficiency of equipment, etc., to reduce the number of conversion stages, improve power density and energy efficiency, The effect of increasing redundancy

Pending Publication Date: 2021-06-04
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the present invention provides a power router and a power router control method, so as to solve the problem that the existing power router has too many power conversion stages and cannot guarantee the operating efficiency of the equipment

Method used

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  • Electric energy router and electric energy router control method
  • Electric energy router and electric energy router control method
  • Electric energy router and electric energy router control method

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Embodiment

[0034] An embodiment of the present invention provides a power router, which is suitable for various energy conversion applications, and is applied to the interconnection of AC and DC systems with multiple voltage levels and energy transfer, such as figure 1As shown, the power router in the embodiment of the present invention includes: three phase units are AC three-phase sequence (A phase unit 01, B phase unit 02, C phase unit 03), and each phase unit includes two serially connected Bridge arm unit, the connection point of two bridge arm units (upper bridge arm unit 1 and lower bridge arm unit 2) in series forms the high-voltage AC port of the corresponding phase unit; each high-voltage AC port is connected to the AC power supply (A, B, C phase) connection; three phase units are connected in parallel to form a high-voltage DC port; each bridge arm unit is composed of a bridge arm reactor 11, a power module unit 12 and a plurality of hybrid AC sub-modules 13 connected in series...

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Abstract

The invention discloses an electric energy router and an electric energy router control method. The electric energy router comprises three phase units; each phase unit comprises two bridge arm units which are connected in series, and a connection point of the two bridge arm units which are connected in series forms a high-voltage alternating-current port of the corresponding phase unit; each high-voltage alternating-current port is connected with an alternating-current power supply of a corresponding phase; the three phase units are connected in parallel to form a high-voltage direct-current port; each bridge arm unit is formed by connecting a bridge arm reactor, a power module unit and a plurality of hybrid alternating-current sub-modules in series; different numbers of hybrid alternating-current sub-modules are connected into each phase unit to form alternating-current ports of different voltage levels corresponding to the phase unit. According to the invention, control of transmission power among the electrical connection ports, bridge arm energy balance and sub-module capacitance voltage-sharing control are realized, high-voltage, medium-voltage and low-voltage alternating-current / direct-current electrical ports can be integrally provided, and the power density and energy utilization efficiency of equipment are effectively improved.

Description

technical field [0001] The invention relates to the technical field of multi-port AC-DC power conversion and energy transfer, in particular to a power router and a power router control method. Background technique [0002] The power router has technical advantages such as active and reactive power independent adjustment, flexible control, etc. It can realize multi-voltage level AC and DC power transformation and multi-system energy interconnection, and directly provide grid-connected and power supply ports for renewable energy and AC-DC loads. It is an important means to improve the acceptance capacity of renewable energy, enhance the stability and flexibility of the power grid, and support energy transformation. The existing power routers need to rectify the power first, then transform it to DC, and finally invert it. The large number of power devices leads to high cost and bulky equipment. Contents of the invention [0003] Therefore, the present invention provides a p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/68
CPCH02M7/68
Inventor 王新颖贺之渊李强邓卫华唐茹彬
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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