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High-performance current sensorless drive for synchronous motors with only low-resolution position sensor

By: Morimoto, S.; Takeda, Y.; Sanada, M.;

2002 / IEEE / 0-7803-7420-7

Description

This item was taken from the IEEE Conference ' High-performance current sensorless drive for synchronous motors with only low-resolution position sensor ' This paper proposes the current sensorless drive system with only low-resolution position sensor in order to simplify the synchronous motor drive system. The high-performance current vector control can be achieved in the proposed drive system, where the current sensors are eliminated but the simulated currents based on motor model are used for current control. The low-resolution position sensor, which has a resolution of only 60 electrical degrees, is used instead of a conventional high-resolution position sensor, and the position information with higher resolution is estimated. The steady state and dynamic performances are examined by several drive tests with respect to the interior permanent magnet synchronous motor and the synchronous reluctance motor. The effectiveness of the proposed drive system is clarified from several experimental results.