Double closed-loop control strategy of power convertor based on particle swarm optimization

A technology of double closed-loop control and particle swarm algorithm, applied in the direction of instruments, calculations, electrical components, etc., can solve problems such as difficult engineering implementation and practical application, and achieve the effects of improving resistance, easy implementation, and convenient commercial development

Active Publication Date: 2016-09-07
STATE GRID LIAONING ELECTRIC POWER RES INST +2
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Problems solved by technology

[0008] The above-mentioned control technologies for power converters mostly focus on theoretical research and are difficult to realize in engineering, and the above-mentioned control methods are difficult to be practical in a short period of time

Method used

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  • Double closed-loop control strategy of power convertor based on particle swarm optimization
  • Double closed-loop control strategy of power convertor based on particle swarm optimization
  • Double closed-loop control strategy of power convertor based on particle swarm optimization

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Embodiment Construction

[0045] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and simulation experiments.

[0046] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, a double closed-loop control strategy of power converter based on particle swarm algorithm

[0047] Include the following steps:

[0048] Step 1) implementing a double closed-loop control strategy of the voltage outer loop and the current inner loop to the power converter;

[0049] Step 2) determining the control parameter adjustment range of the control link of online adjustment;

[0050] Step 3) monitoring control target value;

[0051] Step 4) If the control target exceeds the allowable range, the particle swarm optimization algorithm is used to update the control parameters;

[0052] (1) Set the initial value of the number of iterations to zero;

[0053](2) Initialize particle swarm calculation parameters, includin...

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Abstract

This invention relates to a double closed-loop control strategy of a power convertor based on particle swarm optimization, and relates to the technical field of power grid operation and control. The double closed-loop control strategy comprises the following steps: 1) carrying out double closed-loop control strategy of voltage outer loop and current inner loop to the power convertor; 2) determining the regulating range of the control parameter of the control step of the on-line adjustment; 3) monitoring a control target value; 4) if the control target is out of the allowable range, updating the control parameter by the particle swarm optimization; 5) and if the control target is in the allowable range, keeping the control parameter. The double closed-loop control strategy provided by the invention has high reliability and self-adaptability, can control the power of the power convertor under the disturbance of the power grid, and has important practical significance for improving the operation reliability and the controllability of the power convertor.

Description

technical field [0001] The invention relates to a control strategy for a power converter, in particular to a double-closed-loop control strategy for a power converter based on a particle swarm algorithm, and belongs to the technical field of low-voltage power grid operation and control. Background technique [0002] Power converters can convert energy from AC to DC, DC to AC, AC to AC or DC to DC, and are widely used in power systems. With the increasing application of new energy in the low-voltage power grid, wind, light, energy storage, etc. are integrated into the power grid, and the operation and control of the micro-grid are inseparable from the power converter device, which is used for rectification, inverter, Full quadrant power control, reactive power compensation, etc. At present, voltage source converters are generally used in power converter devices, and high-power devices that can be turned off are used. How to control these electrorheological devices is the ke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00G06N3/00
CPCG06N3/00H02M1/00H02M1/0025
Inventor 高强韩月刘齐钟丹田王茂军张光明石林郭占男叶鹏胡耀宁
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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