A Beat Frequency Suppression Control Method Based on a Second-order Generalized Integrator

Rong LIU; Ke CHEN; Tiangui RAO

doi:10.13890/j.issn.1000-128x.2021.06.008

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A Beat Frequency Suppression Control Method Based on a Second-order Generalized Integrator

Railway Rolling Stock | 更新时间：2022-01-18

- A Beat Frequency Suppression Control Method Based on a Second-order Generalized Integrator
- Electric Drive for Locomotives Vol. 0, Issue 6, Pages: 59-65(2021)
- 作者机构：
  
  1.中国铁路成都局集团有限公司，四川　成都　610081
  2.株洲中车时代电气股份有限公司，湖南　株洲　412001
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2021.06.008
  CLC：
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Rong LIU, Ke CHEN, Tiangui RAO. A Beat Frequency Suppression Control Method Based on a Second-order Generalized Integrator. [J]. Electric Drive for Locomotives 0(6):59-65(2021)
DOI：

Rong LIU, Ke CHEN, Tiangui RAO. A Beat Frequency Suppression Control Method Based on a Second-order Generalized Integrator. [J]. Electric Drive for Locomotives 0(6):59-65(2021) DOI： 10.13890/j.issn.1000-128x.2021.06.008.

摘要

在轨道交通牵引系统中，由于使用单相整流器，逆变器的直流输入电压包含纹波分量，该分量频率是网侧电压频率的2倍，会导致牵引电机的转矩和电流产生脉动。为了减少脉动，提出一种基于二阶广义积分器的拍频抑制控制方法。首先，利用二阶广义积分器准确提取纹波分量；其次，注入相位补偿信息组成拍频抑制分量；最后，将拍频抑制分量叠加到磁链上，从而实现拍频抑制。对比了2种优化策略，根据脉动抑制效果实现了控制方法的最优化。通过仿真验证了纹波分量提取的准确性，抑制低频电流和转矩脉动的有效性。

Abstract

In rail transit traction systems, due to the use of single-phase recti fiers, the DC input voltage of the inverter contains a ripple component whose frequency is twice the frequency of the grid-side voltage, which will cause the torque and current of the traction motor to pulsate. In order to reduce the pulsation, a beat frequency suppression control method based on a second-order generalized integrator was proposed. First, the second-order generalized integrator was used to accurately extract from the ripple component, and then the phase compensation information was injected to form the beat frequency suppression component, and finally the beat frequency suppression component was superimposed on the magnetic link to achieve beat frequency suppression. At the same time, the two optimization strategies were compared, and the optimization of the control method was realized according to the pulsation suppression effect. The simulation veri fied the accuracy of ripple components extraction and the effectiveness of low-frequency current and torque ripple suppression.

关键词

牵引系统纹波分量二阶广义积分器拍频抑制仿真电力机车

Keywords

traction systemripple componentsecond-order generalized integratorbeat frequency suppressionsimulationelectric locomotive

references

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CHEN Yanping, XIN Li, LI Zhonghao. Research on the secondary resonant circuit of single-phase voltage-pulse recti fier[J]. Electric Drive for Locomotives, 2010(2): 28-32.

NAKATA K, NAKAMACHI T, NAKAMURA K. Beatless control of inverter-induction motor system driven by a rippled DC power source[J]. Electrical Engineering in Japan, 1989, 109(5): 122-131.

KIMURA A. Frequency domain analysis of beat-less control method for converter-inverter driving systems applied to AC electric cars[J]. IEEJ Transactions on Industry Applications, 2008, 128(11): 1269-1274.

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SONG Wensheng, SUN Xiao, JIANG Cai. One-cycle control for beat-less frequency control application of traction drive system[J]. Electric Machines and Control, 2017, 21(3): 10-16.

苟斌, 冯晓云, 宋文胜, 等. 牵引变流器-电机拍频现象及其抑制方法[J]. 中国电机工程学报, 2013, 33(9): 55-63.

GOU Bin, FENG Xiaoyun, SONG Wensheng, et al. Analysis and suppression of beat phenomenon for railway traction converters and motors[J]. Proceedings of the CSEE, 2013, 33(9): 55-63.

CHEN K, AI W, CHEN B, et al. Measuring and reconstruction algorithm based on improved second-order generalised integrator configured as a quadrature signal generator and phase locked loop for the three-phase AC signals of independent power generation systems[J]. IET Power Electronics, 2016(11): 2155-2161.

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Operating Branch, Ningbo Rail Transit Group Co., Ltd.

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