摘要
分析了变频器的基本原理和调速方法,研究了限制变频器正常工作的制约因素。对单回路和双回路供电方式进行了供电可靠性分析,进一步得出了2种供电方式对制冷系统中变频器连续运行的影响。研究了双回路供电自动投切装置的应用方法、作用和重要性。对4种典型工况进行了仿真研究,总结了变频器输出电流、转速、转矩以及变频器内部直流母线电压等参数的变化规律,其可作为变频拖动系统工业现场应用的参考依据。
The basic theory and timing method is analyzed, and the limited factor of converter normal working is gotten. The analysis of single and double line power supply line reliability is done, and the influence in converter continual working is gotten. Introduce the method, function and importance of automatic transfer device. The four types of condition is inves tigated and simulated. The regulation of converter output current, rotor speed, torque, and voltage of DC in converter is summarized. The conclusion could be used for the reference of others domain.
出处
《新技术新工艺》
2016年第3期64-67,共4页
New Technology & New Process
关键词
液氨压缩制冷
变频器
供电可靠性
自动投切装置
转速
转矩
ammonia compression refrigeration, frequency converter, the reliability of power supply, automatic transfer device, rotor speed, torque
