期刊
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
卷 53, 期 1, 页码 222-231出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2016.2614771
关键词
Array signal processing; current measurement; decoupling of systems; giant magnetoresistance; magnetic field measurement; motor drives; semiconductor device packaging
资金
- Fuji Electric Co., Ltd.
- Wisconsin Electric Machines and Power Electronics Consortium of the University of Wisconsin-Madison
Current sensor integration in commercial power semiconductor modules is generally based on shunt resistance methods. The resulting losses and lack of galvanic isolation present opportunities for improvement. This paper describes the integration of submillimeter-sized giant magnetoresistive (GMR) point field detectors (PFDs) into commercial IGBT modules to provide nearly lossless galvanically isolated current-sensing capabilities. The IGBT modules are installed into a three-phase inverter motor drive, and the GMR-based integrated current sensors are used for closed-loop current control in a field-oriented induction motor drive. Finite-element analysis of the module interconnect structures is used to determine detector locations offering the highest possible bandwidth current measurements. Additional PFDs are used to decouple rotating magnetic field disturbances or bias fields from permanent magnets. The same GMR PFDs are also used to provide temperature measurements that are used to decouple the effects of changing temperature.
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