工业变频能量回馈技术进展

摘要

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, energy-saving effect and applications of various energy feedback technologies, including universal PWM inverter energy feedback techno-logy, common DC bus technology, super-capacitor technology and dual-PWM inverter energy feedback technology. The result 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.%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。