摘要
为了解决目前常用交流调压器调压精度低,谐波含量高等不足,提高设备供电质量,该文采用交流斩控原理设计新一代调压器,具有无级无触点,谐波含量低等优点,借鉴了矩阵变换器中的基于电流方向的四步换流策略,解决了交流斩控中的换流开路过压问题。此外设计了合理电流检测电路,确保电流方向正确。仿真试验结果表明,此控制方式设计调压器安全可靠,谐波含量低,响应快速精确。
In order to solve low accuracy regulating,high harmonic in the common AC regulator and improving equipment quality of power supply,the paper adopt AC chopping technique to design a new generation regulator with advantages of no-contact,no-leave and low harmonic etc.Refer to four-step commutation of matrix converter based on current direction,it can solve open over-voltage problem in AC chopper commutation.In addition,the current direction detection circuit was designed to guarantee correctness.Simulation and experiment results show that the regulator with this control mode is safe and reliable,low harmonic,fast and accurate response.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2010年第S2期238-241,共4页
Transactions of the Chinese Society of Agricultural Engineering
关键词
电流检测
斩控
换流
谐波分析
current detection,choppers,commutation,harmonic analysis
