Design of Switching Current Sensor for Three-Phase SiC Inverter

被引：4

作者：

Kim, Sang Min ^{[1
]}

Burgos, Rolando ^{[2
]}

Seo, Jinkyu ^{[1
]}

Kwon, Taesuk ^{[1
]}

机构：

[1] Hyundai Mobis, Elect Powertrain Lab, Seoul, South Korea

[2] Virginia Tech, CPES, Blacksburg, VA USA

来源：

2021 THIRTY-SIXTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2021) | 2021年

关键词：

Rogowski coil; Switching current sensor; SiC inverter; op amp; Offset voltage; Bias current; MOSFET;

D O I：

10.1109/APEC42165.2021.9487414

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper proposes an offset compensation method of the switching current sensor for the current control of the three-phase SiC inverter. Switching current sensors with Rogowski coils, which have analog signal processing circuits implemented with the operational amplifier (op amp), are integrated into the four-layer PCB gate drive board; in the end, the phase currents are reconstructed with the op amp subtractor. To eliminate the op amp offset voltage and bias current effect on the sensor output, an offset compensation S/W algorithm is proposed. A three-phase SiC inverter prototype was built and tested with the three-phase load to verify the feasibility of the method.

引用

页码：2139 / 2146

页数：8

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