基于对称规则采样法的多模块APF并联系统谐波特性分析

电气工程学报 ›› 2015, Vol. 10 ›› Issue (4): 62-69.

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基于对称规则采样法的多模块APF并联系统谐波特性分析

许胜^1,²

^1. 东南大学复杂工程系统测量与控制教育部重点实验室南京 210096
^2. 泰州学院泰州 225300

收稿日期:2014-10-02 出版日期:2015-04-25 发布日期:2015-04-25
作者简介:许胜：男,1976年生,博士后,研究方向为电力电子技术在电力系统中的应用
基金资助:
江苏省高校自然科学研究项目(14KJB470008);江苏省“青蓝工程”基金和泰州市科技支撑计划(TG201416)

Analysis of the Harmonic Characteristics of Multi-modular APF Shunt System Based on Symmetric Regular Sampling

Xu Sheng^1,²

^1. Key Laboratory of Measurement and Control of CSE Ministry of Education Southeast University Nanjing 210096 China
^2. Taizhou University Taizhou 225300 China

Received:2014-10-02 Online:2015-04-25 Published:2015-04-25

摘要/Abstract

摘要：

在建立多模块APF并联系统数学模型的基础上,对基于对称规则采样法的APF单模块SPWM电压、电流谐波特性以及多模块并联系统载波相移（CPS）SPWM电压、电流谐波特性进行了分析研究,旨在为并联系统的参数选择、模块协调控制、并联环流机理分析以及保护等提供理论研究基础。通过理论分析和实验验证,得出以下结论：N模块并APF联系统相比较于单个模块,在输出电流的低频调制分量上,相位同步,幅值提高了N倍;并联系统输出电流的高频开关谐波分量分布在mN倍的载波频率即mNω_c附近,呈奇数次分布,且在(2m–1)×(2N–1)ω_c、m×2Nω_c和m×(2N–1)ω_c三个频率分布点具有不同的谐波特征,与单模块相比,谐波频率提高了N倍,而谐波幅值降低了N倍。

关键词: 对称规则采样法, 载波相移-SPWM, 多模块APF, 谐波特性

Abstract:

Based on the mathematic model of the multi-modular APF parallel system comprising of N modules, the harmonic characteristics of the single module and the multi-modular shunt system on the basis of the regular sampling method are analyzed in this paper. The objective of the study above is to provide theory basis for the parameter design, circulating current analysis, coordinated control, and protection of the shunt system. Via the theory analysis and the experiment validations, some conclusions are obtained as follows. On the one hand, the low frequency modulation component of the output current from the shunt device compared with the single module is synchronous in the phase, and its amplitude is improved by N times. On the other hand, on condition that the carrier wave frequency which is defined as ωc is much larger than the modulation wave frequency, the high frequency switching components of the output current distribute near the the integral multiple of Nω_c, and three different harmonic characteristics exist in the frequency points of (2m-1)×(2N-1)ω_c, m×2Nω_c, and m×(2N-1)ω_c. Simultaneously, compared with the single module, their harmonic frequency are improved by N times, however, the harmonic amplitudes are reduced by N times.

Key words: Symmetric regular sampling, carrier phase-shifted-SPWM, multi-modular APF, harmonic characteristic

中图分类号:

TM46

许胜. 基于对称规则采样法的多模块APF并联系统谐波特性分析[J]. 电气工程学报, 2015, 10(4): 62-69.

Xu Sheng. Analysis of the Harmonic Characteristics of Multi-modular APF Shunt System Based on Symmetric Regular Sampling[J]. Journal of Electrical Engineering, 2015, 10(4): 62-69.

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基于对称规则采样法的多模块APF并联系统谐波特性分析

Analysis of the Harmonic Characteristics of Multi-modular APF Shunt System Based on Symmetric Regular Sampling

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