Output-Current Measurement of a PWM Inverter with a Tiny PCB Rogowski Sensor Integrated into an IGBT Module

被引：0

作者：

Hasegawa, Kazunori ^{[1
]}

Sho, Shun ^{[1
]}

Tsukuda, Masanori ^{[1
]}

Omura, Ichiro ^{[1
]}

Ichiki, Mao ^{[2
]}

Kato, Tohru ^{[3
]}

机构：

[1] Kyushu Inst Technol, Dept Biol Funct Engn, Kitakyushu, Fukuoka, Japan

[2] Kyushu Inst Technol, Dept Elect Engn & Elect, Kitakyushu, Fukuoka, Japan

[3] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki, Japan

来源：

2019 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2019年

关键词：

PWM inverters; current measurement; PCB Rogowski sensors; IGBT modules;

D O I：

10.1109/ecce.2019.8912662

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：

Inverters used in motor-drive and grid-connected applications usually employ current sensors at the output terminal because they have to control the output current. Existing current sensors like the Hall sensor and the current transformer are a constraint to reduce the volume and cost of the inverter. This paper proposes an output-current measurement method of a PWM inverter using a tiny PCB sensor that is based on the so-called Rogowski coil and can be integrated into an IGBT module. The method utilizes the switching current of the low-side switch for reproducing the output current, which allows using the PCB sensor because the switching current consists of high-frequency components. The method uses a single PCB sensor per leg and takes the polarity of the output current into account. Experimental results using a half-bridge sinusoidal PWM inverter verify that the proposed method measures the output current including its fundamental frequency component, switching ripple one, and polarity.

引用

页码：5707 / 5711

页数：5