A control method for an energy storage converter

A technology of energy storage converter and control method, which is applied in AC network circuits, AC network load balancing, electrical components, etc., and can solve problems such as load voltage and current spikes, affecting normal load operation, power tube duty cycle jumps, etc. , to achieve the effect of concise and clear controller
CN109245137BActive Publication Date: 2021-11-16GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
Publication Date
2021-11-16

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Abstract

The invention discloses a control method of an energy storage converter. Both the grid-connected operation mode and the off-grid operation mode have the same control structure, and the control structure includes three control loops: a capacitor voltage loop, an inductor current loop, and a grid-connected operation mode. current loop. The switching of the operating mode only needs to change the input command signal of the capacitor voltage loop and the grid-connected current loop, without changing the controller structure, and the controller is more concise and clear. The control method can effectively solve the control algorithm switching problem during the operation mode switching process of the energy storage converter, realize the smooth switching of the off-grid mode, and avoid the impact of the load.
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Description

technical field

[0001] The invention relates to the technical field of electric power storage, in particular to a control method for an energy storage converter. Background technique

[0002] Energy storage systems play an important role in power systems. On the power generation side, the energy storage system can replace expensive peak-shaving units to achieve peak-shaving functions, and has the advantages of fast response and high efficiency; It can also be used as a UPS to achieve uninterrupted power supply for important loads; on the distributed renewable energy generation side, the energy storage system can smooth the power fluctuations of intermittent power sources such as photovoltaics and wind power, and reduce the impact on the grid.

[0003] Electric energy storage technologies include pumped storage, compressed air energy storage, supercapacitor energy storage, electrochemical energy storage, etc. Among them, electrochemical energy storage (battery) is currently...

Claims

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