摘要
在生产过程中,经常需要采取一些措施使电动机尽快停转,或者从某高速降到某低速运转,或者限制位能性负载在某一转速下稳定运转,这就是电动机的制动问题.在应用中,电机制动多采用电磁制动.这里主要讨论电磁制动中的反接制动、能耗制动和回馈制动.反接制动制动力强,制动迅速,控制电路简单,设备投资少;但制动准确性差,制动过程中冲击力强烈,易损坏传动部件.能耗制动方法属不可控,制动力矩有波动,但制动时间是可人为设定的.回馈制动是当采用有源逆变技术控制电机时,将制动时再生电能逆变为与电网同频率同相位的交流电回送电网,并将电能消耗在电网上从而实现制动.能量回馈装置系统具有的优越性远胜过能耗制动和反接制动.
In the production process, we often need to take some measures to stop motor as soon as possible, or drop from high-speed to low-speed, or limit the potential speed of the load in a stable operation, this is the issue of motor braking. In applications, most use of braking is electromagnetic brake. We focus on the reverse braking, energy consume braking and back braking. Reverse braking is braked quickly,its circuit is simple and less investment, but the accuracy is differential. It has a strong impact and is easy to damage to transmission components. Energy consume braking is uncontrolled and has torque fluctuations, but the braking time is artificial. Back braking with using active brake control inverter motor will brake when the renewable energy grid inverter with the same phase with the frequency of alternating current power network loopback. Device of back braking system is far better than reverse braking and energy consume braking.
出处
《周口师范学院学报》
CAS
2009年第5期61-62,89,共3页
Journal of Zhoukou Normal University
基金
河南省教育厅自然科学研究计划项目(No.2009B510020)
关键词
电磁制动
反接制动
能耗制动
回馈制动
Electromagnetic brake
reverse braking
energy consume braking
back braking
