Method, device and equipment for controlling off-grid output voltage of energy storage converter, and medium

An energy storage converter and output voltage technology, which is applied in the direction of conversion equipment with reversible, can solve the problem of unstable output voltage of the energy storage converter off-grid, and achieves faster tracking ability, improved stability, The effect that the output voltage remains stable

Active Publication Date: 2020-07-03
BEIJING ETECHWIN ELECTRIC
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Problems solved by technology

[0005] In view of the shortcomings of the existing methods, this application proposes a control method, device, equipment and medium for the off-grid output vo

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  • Method, device and equipment for controlling off-grid output voltage of energy storage converter, and medium
  • Method, device and equipment for controlling off-grid output voltage of energy storage converter, and medium
  • Method, device and equipment for controlling off-grid output voltage of energy storage converter, and medium

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Embodiment Construction

[0036] The present application is described in detail below, and examples of embodiments of the present application are shown in the drawings, wherein the same or similar reference numerals represent the same or similar components or components having the same or similar functions throughout. Also, detailed descriptions of known technologies will be omitted if they are not necessary to illustrate the features of the present application. The embodiments described below by referring to the figures are exemplary only for explaining the present application, and are not construed as limiting the present application.

[0037] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as commonly understood by those of ordinary skill in the art to which this application belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should ...

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Abstract

The invention provides a method, a device and equipment for controlling energy storage converter off-grid output voltage, and a medium. The control method comprises the following steps: acquiring an output voltage reference value, a three-phase output voltage, a three-phase inductive current and a three-phase capacitive current of an energy storage converter; performing proportional integral control on the voltage loop of the energy storage converter according to the output voltage reference value and the three-phase output voltage to obtain an inner loop current given value; performing proportional resonance control on the current loop of the energy storage converter according to the inner loop current given value, the three-phase inductive current and the three-phase capacitive current to obtain an off-grid voltage control signal; and controlling the off-grid voltage output of the energy storage converter according to the off-grid voltage control signal. According to the invention, the tracking capability of the inductive current can be accelerated, the influence of sudden change of the load current on the output voltage is solved, and the output voltage of the energy storage converter is kept stable during off-grid work, so that the stability of the load power supply voltage is improved.

Description

technical field [0001] The present application relates to the technical field of energy storage converters. Specifically, the present application relates to a control method, device, equipment and medium for off-grid output voltage of energy storage converters. Background technique [0002] With the continuous development of wind energy, solar energy and other new energy power generation, more and more intermittent and unstable power sources appear in the power system, resulting in an increasingly strong demand for energy storage systems. The energy storage system can not only solve the problems caused by the randomness and uncontrollability of new energy power generation itself, and reduce the impact of changes in new energy output on the power grid; The combination of energy storage and new energy power generation is the main form of the future new energy development pattern. [0003] An important part of the battery energy storage system is the energy storage converter (...

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Application Information

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IPC IPC(8): H02M7/72
CPCH02M7/72
Inventor 秦承志
Owner BEIJING ETECHWIN ELECTRIC
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