三相输入型阻塞式交交变频电源

doi:10.16180/j.cnki.issn1007-7820.2021.09.009

摘要/Abstract

摘要：

传统SCR相控式交交变频手段控制复杂,所需器件较多。为了克服这些缺点,在单相阻塞式交交变频系统的基础上,文中提出了一种三相输入型阻塞式交交变频系统。该系统以工频三相电源作为输入,采用并联结构的传统交流斩波调压电路拓扑及高频PWM控制。根据面积等效原理推导出了占空比与输出电压幅值的关系,实现了系统输出电压的频率和幅值分别可调的目的。最后,对在MATLAB 2016b/Simulink环境中搭建的系统数学模型进行了仿真分析,制作了基于dSPACE半实物仿真平台的三相输入型阻塞式交交变频电源的样机并进行了实验。仿真结果及实验结果证明了文中所设计系统的正确性和可行性。

关键词: 三相输入, 交交变频, 阻塞式, PWM控制, MATLAB/Simulink, 仿真分析, dSPACE, 样机

Abstract:

In order to overcome the shortcomings of the traditional SCR phase-controlled AC-AC conversion method, such as complex control and more devices, on the basis of the single-phase blocking AC-AC conversion system, a three-phase input-type blocking AC-AC conversion system is proposed. In this system, the power frequency three-phase power supply is used as the input, and the traditional AC chopper voltage regulating circuit topology and high frequency PWM control are used. According to the area equivalent principle, the relationship between the duty cycle and the output voltage amplitude is deduced, which realizes the purpose of the system output voltage frequency and amplitude can be adjusted separately. Finally, the system mathematical model built in MATLAB 2016b/Simulink environment is simulated and analyzed, and a prototype of a three-phase input-type blocking-type cross-converter power supply based on the dSPACE semi-physical simulation platform is fabricated and tested. The simulation results and experimental results verify the correctness and feasibility of the system designed in the study.

Key words: three-phase input, AC-AC converter, blocking, PWM control, MATLAB/Simulink, simulation analysis, dSPACE, prototype

中图分类号:

TN948.64

李玉东,连海山,胡晓丹. 三相输入型阻塞式交交变频电源[J]. 电子科技, 2021, 34(9): 47-53.

LI Yudong,LIAN Haishan,HU Xiaodan. AC/AC Frequency Conversion Power Supply Based on Three-Phase Input[J]. Electronic Science and Technology, 2021, 34(9): 47-53.

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