工业变频能量回馈技术进展
周侃恒,吴清,夏春明
华东理工大学 机械与动力工程学院,上海 200237
摘 要: 介绍了目前工业变频电气传动系统下电机制动过程中常用的工业变频能量回馈技术,包括通用变频器能量回馈PWM 技术、公共直流母线技术、超级电容技术以及双脉宽调制PWM 变频器能量回馈技术,对各种技术的原理、节能效果、应用情况进行了说明和比较。结果表明变频器能量回馈技术能有效节能,在工业变频电气传动系统中应用广泛,是变频调速发展的新趋势。
关键词: 变频器;能量回馈;交流异步电机
中图分类号:TM344.6 文献标识码:A 文章编号:1007-3175(2013)09-0007-06
Energy Feedback Technologies Progress of Industrial Frequency Conversion
ZHOU Kan-heng, WU Qing, XIA Chun-ming
Mechanical and Power Engineering Institute, East China University of Science and Technology, Shanghai 200237, China
Abstract: Introduction was made to industrial frequency conversion energy feedback technologies in common use in the process of motor braking under the system of industrial variable frequency electric drive at present. This paper discussed the principle, energysaving effect and applications of various energy feedback technologies, including universal PWM inverter energy feedback technology,common DC bus technology, super-capacitor technology and dual-PWM inverter energy feedback technology. The esult shows that the inverter energy feedback technology more widely applied in industrial variable frequency electric drive systems is the new development trend of the variable frequency speed control.
Key words: frequency converter; energy feedback; AC asynchronous motor
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