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This paper presents a novel low-speed and high-torque motor, self-commutating low-speed reluctance motor (SCLRM), for direct-drive applications. With six diodes connected to the stator windings, it is capable of self-commutating when working on normal three-phase ac source for constant-speed operation. It provides an uncomplicated and low-cost method to increase the torque capability of the traditional...
This paper presents a novel counter-rotating permanent magnet BLDCM (CRBLDCM) for underwater propulsion. This kind of motor is different from the traditional BLDCM in that both the rotor and the armature are rotating in the opposite directions, which is particularly suitable for underwater propulsion system. In this paper, the mathematical model of CRBLDCM is established based on its operation principle,...
Initial position is one of the key points in the permanent magnet synchronous machine (PMSM) senseless control. This paper presents a neural network method with currents difference as its inputs and the rotor position angle as its outputs. 256 different 100mus-width voltage vector pulse pairs injects into stator before position calculation. The voltage vector direction distributes symmetrically around...
Initial position is one of the key points in the permanent magnet synchronous machine (PMSM) senseless control. This paper presents a neural network method with currents difference as its inputs and the rotor position angle as its outputs. 256 different 100mus-width voltage vector pulse pairs injects into stator before position calculation. The voltage vector direction distributes symmetrically around...
This paper presents a novel counter-rotating permanent magnet BLDCM (CRBLDCM) for underwater propulsion. This kind of motor is different from the traditional BLDCM in that both the rotor and the armature are rotating in the opposite directions, which is particularly suitable for underwater propulsion system. In this paper, the mathematical model of CRBLDCM is established based on its operation principle,...
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