多脉波整流系统Boost PFC型平衡变换器的研究
发布时间：2019-02-14 16:06
【摘要】：三相整流电路在电化学加工、可再生能源变换以及航空航天等大功率场合获得了广泛的应用,然而其非线性与时变性也给电网带来了严重的谐波污染问题。多脉波整流技术通过两个或多个变压器的移相作用,能够在降低交流侧输入电流谐波的同时减小直流侧输出电压纹波,已成为解决大功率三相整流系统谐波污染问题的有效途径。为进一步提高多脉波整流电路的谐波抑制性能,本文在12脉波整流电路的基础上,设计了基于Boost PFC型有源平衡电抗器的低谐波整流系统,在有效抑制输入电流谐波的同时实现谐波能量的回收利用。为分析AIPR原边环流对系统输入电流谐波的抑制作用,本文结合开关函数法详细分析了系统交直流侧电流特性,得出系统交流侧输入电流与直流侧负载电流以及AIPR原边环流三者之间的函数关系,明确谐波抑制的关键在于控制AIPR原边环流的幅值与相位满足条件;并分析了环流调制对系统电压特性及主要磁性器件容量的影响,与调制前的常规系统相对比,明确了系统特性。AIPR原边环流需要通过控制副边有源电路产生,本文通过分析谐波抑制时所需副边电路的能量流动方向及工作特点,提出了采用双重交错并联Boost PFC电路作为副边电路的方案。由此构成有源平衡变换器能够满足环流的控制要求,显著降低输入电流谐波;同时能够将谐波能量馈送至系统输出负载侧,以实现谐波能量的重新利用。对由交错并联Boost PFC电路构成的有源平衡电抗器进行了具体设计,给出了Boost电感、输出滤波电容以及其他主要电路参数的设计方法。根据系统控制要求,并结合数字控制优势,设计了基于TMS320F28027的数字控制系统,控制输入电流的同时完成对系统过流、过压的保护。利用MATLAB/SIMULINK对所设计的系统进行了仿真验证,并研制了一台功率等级为9k W的实验样机。实验结果表明,仅需加入系统容量2%的Boost PFC变换器,即可将系统输入电流THD降低至原来的1/4左右,实验验证了所设计的系统在大功率整流场合谐波抑制的有效性。
[Abstract]:Three-phase rectifier circuits have been widely used in high power applications such as electrochemical machining renewable energy conversion and aerospace. However their nonlinear and time-varying characteristics have also brought serious harmonic pollution problems to the power grid. Multi-pulse rectifier technology can reduce the input current harmonics of AC side and the ripple of output voltage at the DC side through the phase shift of two or more transformers. It has become an effective way to solve the problem of harmonic pollution in high power three-phase rectifier system. In order to further improve the harmonic suppression performance of multi-pulse rectifier circuit, a low-harmonic rectifier system based on Boost PFC active balance reactor is designed on the basis of 12-pulse rectifier circuit. The harmonic energy can be recovered at the same time that the input current harmonics are suppressed effectively. In order to analyze the suppression effect of AIPR primary circulation on the input current harmonics of the system, the characteristics of AC / DC side current of the system are analyzed in detail with the switching function method. The functional relationship among AC input current DC load current and AIPR primary circulation is obtained. The key of harmonic suppression is to control the amplitude and phase of AIPR primary circulation. The effect of circulation modulation on the voltage characteristics of the system and the capacity of the main magnetic devices is analyzed. Compared with the conventional system before modulation, the characteristics of the system are clarified. The primary circulation of AIPR needs to be generated by controlling the auxiliary side active circuit. Based on the analysis of the energy flow direction and working characteristics of the secondary side circuit for harmonic suppression, this paper presents a scheme of using the dual interleaving parallel Boost PFC circuit as the secondary side circuit. Thus the active balance converter can meet the control requirements of the circulation and reduce the input current harmonics significantly. At the same time, the harmonic energy can be fed to the output load side of the system to realize the reuse of harmonic energy. An active balancing reactor composed of staggered parallel Boost PFC circuits is designed, and the design methods of Boost inductor, output filter capacitance and other main circuit parameters are given. According to the requirement of system control and the advantages of digital control, a digital control system based on TMS320F28027 is designed, which can control the input current and protect the system from overcurrent and overvoltage at the same time. The system is simulated and verified by MATLAB/SIMULINK, and an experimental prototype with a power level of 9kW is developed. The experimental results show that the input current (THD) of the system can be reduced to about 1 / 4 of the original input current by adding only 2% Boost PFC converter. The experimental results show that the proposed system is effective in high-power rectifier.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM46
本文编号：2422368
[Abstract]:Three-phase rectifier circuits have been widely used in high power applications such as electrochemical machining renewable energy conversion and aerospace. However their nonlinear and time-varying characteristics have also brought serious harmonic pollution problems to the power grid. Multi-pulse rectifier technology can reduce the input current harmonics of AC side and the ripple of output voltage at the DC side through the phase shift of two or more transformers. It has become an effective way to solve the problem of harmonic pollution in high power three-phase rectifier system. In order to further improve the harmonic suppression performance of multi-pulse rectifier circuit, a low-harmonic rectifier system based on Boost PFC active balance reactor is designed on the basis of 12-pulse rectifier circuit. The harmonic energy can be recovered at the same time that the input current harmonics are suppressed effectively. In order to analyze the suppression effect of AIPR primary circulation on the input current harmonics of the system, the characteristics of AC / DC side current of the system are analyzed in detail with the switching function method. The functional relationship among AC input current DC load current and AIPR primary circulation is obtained. The key of harmonic suppression is to control the amplitude and phase of AIPR primary circulation. The effect of circulation modulation on the voltage characteristics of the system and the capacity of the main magnetic devices is analyzed. Compared with the conventional system before modulation, the characteristics of the system are clarified. The primary circulation of AIPR needs to be generated by controlling the auxiliary side active circuit. Based on the analysis of the energy flow direction and working characteristics of the secondary side circuit for harmonic suppression, this paper presents a scheme of using the dual interleaving parallel Boost PFC circuit as the secondary side circuit. Thus the active balance converter can meet the control requirements of the circulation and reduce the input current harmonics significantly. At the same time, the harmonic energy can be fed to the output load side of the system to realize the reuse of harmonic energy. An active balancing reactor composed of staggered parallel Boost PFC circuits is designed, and the design methods of Boost inductor, output filter capacitance and other main circuit parameters are given. According to the requirement of system control and the advantages of digital control, a digital control system based on TMS320F28027 is designed, which can control the input current and protect the system from overcurrent and overvoltage at the same time. The system is simulated and verified by MATLAB/SIMULINK, and an experimental prototype with a power level of 9kW is developed. The experimental results show that the input current (THD) of the system can be reduced to about 1 / 4 of the original input current by adding only 2% Boost PFC converter. The experimental results show that the proposed system is effective in high-power rectifier.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM46
【参考文献】
相关期刊论文 前10条
1 袁发庭;秦实宏;姚湘陵;;谐波注入串联三相桥式12脉波整流电路的研究[J];电子设计工程;2013年02期
2 王仕韬;吕征宇;张德华;张达敏;;一种高功率因数的晶闸管多脉整流器[J];电力系统自动化;2012年24期
3 朱屹;杨世彦;孟凡刚;;直流侧带PWM整流器的12脉波整流系统及其负载适应性[J];电工技术学报;2012年08期
4 孟凡刚;杨世彦;杨威;;多脉波整流技术综述[J];电力自动化设备;2012年02期
5 姚玮;吕征宇;陈申;史杨宇;;单相PFC变换器功率因数的数字分析方法[J];电源学报;2012年01期
6 谢小威;王明;张方华;;电流谐波注入型12脉冲自耦变压整流器[J];电力电子技术;2011年11期
7 毛浪;陈乾宏;蒋磊磊;;航空用40kW18脉冲自耦型变压整流器的研究[J];电力电子技术;2011年07期
8 王少永;张方华;;平均电流型Boost PFC变换器中过零畸变[J];电工技术学报;2011年02期
9 王菁;王毅;刘志宇;;数字APFC的电流采样算法改进[J];电力电子技术;2009年05期
10 马义林;陈宇;任志新;张方华;;新型12脉冲自耦变压整流器的研究[J];电力电子技术;2008年09期
相关硕士学位论文 前2条
1 朱屹;基于有源平衡电抗器的低谐波12脉波整流系统研究[D];哈尔滨工业大学;2011年
2 王山山;交错并联Boost PFC变换器的研究[D];浙江大学;2010年
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