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In certain motor applications, a sensor cannot be used because of restrictions of temperature environment or size. One example is a hand piece used in dentistries. It is required that this should be performed correctly at a low speed. Therefore, control expansion of the low speed field by the BLDCM sensorless drive is required. In this paper, the sensorless drive using a load angle performs control...
This paper propose a new current control system for IPMSM to reduce harmonic currents caused by the overmoduration and a non-sinusoidal magnetic flux distribution on the rotor. The harmonic currents have problems with making a current control system of IPMSMs unstable easily. The proposed current control system has two current controllers. One of them controls fundamental current to satisfy the required...
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