| Summary: | 碩士 === 國立宜蘭大學 === 機械與機電工程學系 === 101 === In recent years, with the development of power electronics technology, microelectronic technology and control theory, the performance of the inverter is continuously improving, and it has been applied more widely everywhere. Since the development of the inverter, it has focused on a three-phase induction motor. Mainly due to the material progressed in recent years, the permanent magnet synchronous motor is now appearing on the market. Many famous manufacturers began to develop the inverter of the permanent magnet synchronous motor. The current is applied according to the rotor position of the permanent magnet synchronous motor while rotating. Generally, the rotor position is determined by the position sensor. Although, the set up of the position sensor requires extra costs and external device space to design it, and isn’t appropriate in high or low temperatures and pressures. This study is based on the vector inverter and aimed at researching the permanent magnet synchronous motor sensorless control technology. The micro control unit which is produced by TOSHIBA Corporation, combines the back-electromotive force estimation with the PI controller and the phase lock loop sensorless control structure. The experimental results confirm that by combining the back-electromotive force estimation with the PI controller, they can be used in the surface-mounted permanent magnet synchronous motor and the interior permanent magnet synchronous motor.
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