三相PWM变换器的负载自适应控制

doi:10.3969/j.issn.0372-2112.2015.10.031

电子学报 ›› 2015, Vol. 43 ›› Issue (10): 2088-2094.DOI: 10.3969/j.issn.0372-2112.2015.10.031

三相PWM变换器的负载自适应控制

郭鑫, 任海鹏

西安理工大学自动化与信息工程学院, 陕西西安 710048

收稿日期:2014-01-15 修回日期:2014-12-15 出版日期:2015-10-25
- 通讯作者:
- 任海鹏
- 作者简介:
- 郭鑫男,1986年8月出生,陕西西安人.西安理工大学自动化与信息工程学院博士研究生.2011年获西安理工大学自动化与信息工程学院硕士学位.主要研究方向为高效电力电子电路控制.E-mail:guoxin.xaut@gmail.com
- 基金资助:
- 教育部博士点基金 (No.20126118110008); 陕西省重点科技创新团队 (No.2013KCT-04); 西安市技术转移促进工程项目 (No.CX12185-1)

Load Adaptive Control for Three-Phase PWM Converter

GUO Xin, REN Hai-peng

School of Automation and Information Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China

Received:2014-01-15 Revised:2014-12-15 Online:2015-10-25 Published:2015-10-25
- Supported by:
- Ph.D. Programs Foundation of Ministry of Education of China (No.20126118110008); Key Science and Technology Innovation Team of Shaanxi Province (No.2013KCT-04); Technology Transfer Promotion Project of of Xi'an Science and Technology Bureau (No.CX12185-1)

摘要/Abstract

摘要：

三相PWM变换器因结构相对简单,开关器件电压应力低,效率高等优点得到广泛应用.三相PWM变换器一般采用双闭环控制,控制器采用PI控制方法,但传统PI控制方法存在参数不易整定且负载变化时适应性差的问题.针对这些问题,本文提出在三相PWM变换器电压外环和电流内环分别采用负载自适应控制及反馈线性化控制方法.本文方法避免了传统PI控制参数调整困难费时的问题,同时改善了系统性能.仿真及实验结果表明,与传统PI控制和精确反馈线性化控制方法相比,本文方法控制参数少,易于选择,在负载发生变化时,输出电压波动小、恢复时间短,具有更强的适应能力.

关键词: PWM整流器, 反馈线性化, 自适应控制, 负载扰动

Abstract:

The three-phase PWM converter is widely used due to the advantages of its simple topology, low voltage stress on switching devices and high efficiency.Conventionally, double closed-loop PI (Proportional-Integral) controllers are used for three-phase PWM converters.However, PI controllers have two main problems:difficulty to adjust the parameters of the controller and lack of adaptability to the system parameters variations.To deal with these problems, a load-adaptive control method and a feedback linearization control method are proposed for the voltage outer-loop and current inner-loop control of the three-phase PWM converter, respectively.The proposed method avoids the difficult and time-consuming parameters adjustment problems of the conventional PI controllers design, and improves the performance of the system.The simulation and experiment results show that, compared to the traditional PI control and the existing feedback linearization control method, the proposed control method uses less adjustable parameters which are easy to be chosen, and provides less output voltage perturbation, less recovery time and stronger adaptivity with respect to load variations.

Key words: PWM rectifier, feedback linearization, adaptive control, load perturbation

中图分类号:

TN911.23

郭鑫, 任海鹏. 三相PWM变换器的负载自适应控制[J]. 电子学报, 2015, 43(10): 2088-2094.

GUO Xin, REN Hai-peng . Load Adaptive Control for Three-Phase PWM Converter[J]. Acta Electronica Sinica, 2015, 43(10): 2088-2094.

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三相PWM变换器的负载自适应控制

Load Adaptive Control for Three-Phase PWM Converter

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