Title :
Optical probe current sensor module using the Kerr effect and its application to IGBT switching current measurements
Author :
Ogawa, Keisuke ; Suzuki, Shin ; Sonehara, Makoto ; Sato, Toshiro ; Asanuma, Kazushi
Author_Institution :
Spin Device Technol. Center, Shinshu Univ., Nagano, Japan
fDate :
Nov. 28 2011-Dec. 1 2011
Abstract :
An optical probe current sensor module using the Kerr effect has been fabricated and applied to switching current measurements for IGBT used for the DC-DC converter and the DC-AC inverter of EV/HEV. Since the sensor module using the Kerr effect of the single domain exchange-coupled magnetic thin film utilizes magnetization rotation only, the Barkhausen noise due to domain wall pinning can be excluded. The current sensor consists of a Laser-diode, a polarizer, a Fe-Si/Mn-Ir exchange-coupled film, a quarter-wavelength plate, a Glan-Laser polarizer, PIN Photodiodes and a differential amplifier. The optical probe current sensor has a current measurement range of ±60 A and a frequency range of DC - 200 kHz. The switching current of IGBT has been measured by it.
Keywords :
differential amplifiers; electric current measurement; electric vehicles; insulated gate bipolar transistors; magnetic thin film devices; magneto-optical sensors; measurement by laser beam; optical Kerr effect; p-i-n photodiodes; semiconductor lasers; Barkhausen noise; DC-AC inverter; DC-DC converter; Fe-Si-Mn-Ir; Fe-Si/Mn-Ir exchange-coupled film; Glan-laser polarizer; IGBT switching current measurements; Kerr effect; PIN Photodiodes; differential amplifier; domain wall pinning; electric vehicles; hybrid electric vehicles; laser diode; magnetization rotation; optical probe current sensor module; polarizer; quarter-wavelength plate; single domain exchange-coupled magnetic thin film; Current measurement; Nonlinear optics; Optical device fabrication; Optical films; Optical sensors; Optical switches; Probes; Current sensor; Exchange-coupled film; Magnetic Kerr effect; Optical probe;
Conference_Titel :
Sensing Technology (ICST), 2011 Fifth International Conference on
Conference_Location :
Palmerston North
Print_ISBN :
978-1-4577-0168-9
DOI :
10.1109/ICSensT.2011.6137050
