Industrial Inverter Current Sensing With Three Shunt Resistors: Limitations and Solutions

被引：21
|
作者：
Zhang, Zhendong [1 ]
Leggate, David [1 ]
Matsuo, Takayoshi [1 ]
机构：
[1] Rockwell Automat, Mequon, WI 53092 USA
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2017年 / 32卷 / 06期
关键词：
Current reconstruction; feedback shunts; modulation index (MI); pulse width modulation (PWM) pulse expansion; sampling moment shift; SINGLE CURRENT SENSOR; DC-LINK; CURRENT RECONSTRUCTION; LOW-COST;
D O I：
10.1109/TPEL.2016.2596778
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：
As inverter powered variable speed drives become popular and technically mature, cost control becomes the core competence for inverter manufacturers. Under minimum performance requirement specifications, the inverter is tailored in every aspect, from the main power device to various sensors to enhance its competitiveness. This paper mainly focuses on various issues associated with the downgrade of current sensors from standard Hall sensor to shunt resistors. The limitation of current sensing by shunt resistors is reviewed and method to expand the maximum achievable modulation index on the vector plane is implemented. Experiments are conducted to verify the analysis and to validate the effectiveness of the reconstruction algorithm.
引用
收藏
页码：4577 / 4586
页数：10
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