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A Double Closed-loop Control Strategy of Power Converter 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 that are difficult to be practical and difficult to realize in engineering, and achieve the effects of easy implementation, improved resistance, and good reliability

Active Publication Date: 2019-05-03
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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  • A Double Closed-loop Control Strategy of Power Converter Based on Particle Swarm Optimization
  • A Double Closed-loop Control Strategy of Power Converter Based on Particle Swarm Optimization
  • A Double Closed-loop Control Strategy of Power Converter 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

The invention relates to a double-closed-loop control strategy of a power converter based on a particle swarm algorithm, and belongs to the technical field of power grid operation and control. Its features include the following steps: 1) implementing a double closed-loop control strategy of voltage outer loop and current inner loop for the power converter; 2) determining the control parameter adjustment range of the control link for online adjustment; 3) monitoring the control target value; 4) If the control target exceeds the allowable range, the particle swarm optimization algorithm is used to update the control parameters; 5) If the control target does not exceed the allowable range, keep the control parameters unchanged. The invention has high reliability and adaptability, can realize the power control of the power converter under the disturbance of the power grid, and has important practical significance for improving the operation reliability and controllability of the power converter.

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 Patents(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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