节点文献
基于单元串联多电平高压变频器的异步电机直流制动研究
DC Brake Research on Asynchronous Motor Based on High-Voltage converter With Cells Cascaded Multilevel
【Author】 SHI Hui-yan~1 ZENG Cheng-bi~1 CHANG Rui~2 1.College of Electrical Engineering and Information Technology,Sichuan University;Chengdu, China,610065 2.DongFang Hitachi(CD)Electrical Control Equipments Company;Chengdu,China,610065
【机构】 四川大学电气信息学院; 东方日立(成都)电控设备有限公司;
【摘要】 本文简单的介绍了单元串联多电平变频器的结构,详细的阐述了直流制动的原理和具体实现的方法。提出了在具体实现制动时应考虑的主要三个因素,通过改进的电压控制方法,抑制了制动电流冲击波的产生,能够有效平滑地进行直流制动。实验结果证明,采用直流制动功能是可靠和有效的,直流制动特别适合在低频段制动,所以很适合于风机启动前确保拖动系统从零速开始起动所需的制动场合。
【Abstract】 The system configuration is introduced simply in this paper.The operation principle and design method of DC brake are discussed in detail.Three factors are mainly considered in the braking operation. Through the improved control method of voltage,the abrupt change of output brake current is avoided. It can achieve DC brake smoothly.Experimental results prove that the applied braking method is reliable and effective and specially fit for braking in the low frequency.In order to making sure the fan is stop before starting,the DC braking is usually used.
【Key words】 high-voltage converter; cells cascaded; multilevel; asynchronous motor; DC brake;
- 【会议录名称】 四川省电工技术学会第九届学术年会论文集
- 【会议名称】四川省电工技术学会第九届学术年会
- 【会议时间】2008-09
- 【会议地点】中国四川成都
- 【分类号】TM921.51
- 【主办单位】中国电工技术学会