| Summary: | 碩士 === 國立東華大學 === 電機工程學系 === 96 === The subject of this thesis is to design Hall current transducers, which are the key components of electrical vehicle (EV). First, the power control unit (PCU) of hybrid electrical vehicle (HEV) is analyzed and the field-oriented controlled permanent magnet synchronous motor (PMSM) and permanent magnet synchronous generator (PMSG) of the HEV are described. In the EV, the currents of the PMSM, PMSG and battery charge and discharge system are required. Therefore, Hall current transducers are the key components of the EV. Then, the type, operating principle and circuit architecture of the closed-loop Hall current transducer, which is designed by Topstek INC., are introduced. Furthermore, the output characteristic of the Hall current transducer is adjusted by the laser trimming device. Finally, the specifications of the closed-loop Hall current transducer are verified by some experimental results using DC test device and response frequency test device.
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