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In many electric drive applications where demanding constraints are imposed on motor dimension, the use of axial-flux permanent-magnet synchronous machines is highly advantageous or even mandatory. A major criticality in the design of such machines is the high-speed operation, where a large stator demagnetization current is required for motor flux weakening. This paper describes how the appropriate...
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...
This paper presents the flux weakening control method of an open winding machine which is connected to the two isolated inverters. The methods of the current reference modification and the over voltage modulation of two inverters are proposed to enhance the flux weakening control of the open winding machine at high speed. Furthermore, the power flows through two inverters are controlled independently...
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