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Harmonic compensation method based on FPGA

A harmonic compensation and sub-harmonic technology, applied in the field of harmonic compensation, can solve problems such as harmonic distortion, avoid the impact of compensation performance, realize flexibility, and simplify the effect of system hardware design

Pending Publication Date: 2020-12-15
CHINA ELECTRONIS TECH INSTR CO LTD
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Problems solved by technology

[0007] Aiming at the problems existing in the prior art, the present invention provides a harmonic compensation method based on FPGA, which uses FPGA digital algorithm to solve the harmonic distortion problem caused by the inherent characteristics of the hardware circuit in the arbitrary waveform generator

Method used

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  • Harmonic compensation method based on FPGA
  • Harmonic compensation method based on FPGA
  • Harmonic compensation method based on FPGA

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Embodiment Construction

[0056] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0057] The main idea of ​​realizing FPGA-based harmonic compensation is: to superimpose each harmonic correction data in the original waveform data, and after passing through the nonlinear system, the waveform generated by each harmonic correction data is the same as the amplitude of each harmonic generated by the original waveform data. Equal, 180° out of phase.

[0058] combine figure 1 , a harmonic compensation method based on FPGA, constructing a harmonic compensation circuit in FPGA, the harmonic compensation circuit includes a corrected waveform production module, a corrected waveform phase control module, a corrected waveform amplitude control module and a summation module connected in sequence, using The method for performing harmonic compensation by the harmonic compensation circuit includes the following steps: ...

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Abstract

The invention provides a harmonic compensation method based on an FPGA, and the method comprises the steps: constructing a harmonic compensation circuit in the FPGA, wherein the harmonic compensationcircuit comprises a correction waveform generation module, a correction waveform phase control module, a correction waveform amplitude control module and a summation module, all of which are sequentially connected. The harmonic compensation method comprises the steps of acquiring orthogonal waveform data of original waveform data by Hilbert transform, and acquiring harmonic waveform data of all orders by calculation according to the orthogonal waveform data; calculating a correction phase of each harmonic waveform in the correction waveform phase control module, and performing phase correctionon each harmonic by utilizing the correction phase; calculating a correction amplification factor of each harmonic waveform in the correction waveform amplitude control module, and multiplying the amplification factor by each harmonic waveform data; and carrying out summation operation on the harmonic correction waveform data of each order of amplitude control and the original waveform data. Thecompensation method provided by the invention has low sensitivity to the environment, and can realize accurate compensation of harmonic waves with pertinence to any frequency.

Description

technical field [0001] The invention relates to the field of harmonic compensation of arbitrary waveform generators, in particular to an FPGA-based harmonic compensation method. Background technique [0002] Arbitrary waveform generators are widely used in radar signal simulation, electronic countermeasures, complex electromagnetic environment construction, and quantum communication super multi-channel synchronous excitation generation due to its great flexibility in waveform generation. When the arbitrary waveform generator generates various signals, different degrees of harmonic distortion will inevitably occur due to the inherent characteristics of the hardware circuit in the arbitrary waveform generator. [0003] In order to solve the above problems, the following two methods are commonly used at present: [0004] (1) Starting from the source of harmonic distortion, through in-depth circuit analysis, combined with advanced processing technology, design a hardware circui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/3308H03K3/011H03K3/013
CPCG06F30/3308H03K3/013H03K3/011Y02E40/40
Inventor 李茂林吴恒奎朱卫国罗阳
Owner CHINA ELECTRONIS TECH INSTR CO LTD
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