A Novel Current Detection Technology for a Permanent-Magnet Brushless DC Motor

被引：0
作者：
Sheng Zhan-shi [1 ]
Liang Jun [1 ]
Jing Liang [1 ]
Zhang Dong Hua [1 ]
机构：
[1] Jiangsu Univ, Sch Elect & Informat Engn, Zhenjiang 212013, Peoples R China
来源：
ADVANCES IN MECHATRONICS TECHNOLOGY | 2011年 / 43卷
关键词：
power converter; current-sensing; current reconstruction; Brushless DC Motor;
D O I：
10.4028/www.scientific.net/AMM.43.274
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel technique for power electronic switch current detection is introduced in this paper, in which the current-sensor is replaced by electronics circuit. According to the principle that the magnitude of the switch current is proportional to its turned-on voltage drop, the proposed technique utilizes the method of grasping the turned-on voltage drop of the MOSFET to reproduce its current waveform. The appearances of voltage drop of the MOSFET are analyzed and the current reconstruction principles are introduced. Experimental results are given to validate the proposed technique. It has the characteristics of simplicity and inexpensiveness and is worthy of adoption.
引用
收藏
页码：274 / 278
页数：5
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