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The brushless doubly fed induction machine (DFIM), without brushes and slip rings, is regarded as an attractive alternative to the conventional DFIM in terms of reliability. This paper presents a sensorless field-oriented control strategy for the brushless-DFIM, which further increases its attractiveness as a drive system. With the use of a straightforward and alternative time-dynamic brushless-DFIM...
The multiplex 3-phase winding motors suffer from the problem of the magnetic coupling between the normal winding and the fault winding. To investigate the behaviors of the dual-winding PMSMs on the short-circuited fault conditions, a fault analysis model is developed that includes a dual-winding PMSM circuit model with a short-circuited fault coil within some phase coil and an inverter model with...
In order to precisely control the torque and flux, core loss and stray load loss, which are generally neglected, should be considered in the mathematical model of induction motor (IM) to design the controller. Some of literatures have shown how the detuning can be done in the rotor field oriented (RFO) control system to compensate the effects of core loss and stray load loss. But it has seen that...
In this paper, three calculation methods of torque for Surface-Mounted Permanent Magnet Synchronous Machines (SPMSMs) are performed, and the results including the average torque and the torque ripple from each method are compared. This is in order to enable one to choose an effective torque estimation technique for further torque ripple minimization in these machines. Accordingly, a vector controlled...
This paper investigates the iron loss and torque characteristics of inverter-fed spoke type interior permanent magnet synchronous motor (IPMSM) optimized for sinusoidal distributed back-EMF. First of all, an optimal design procedure is introduced to effectively optimize the rotor pole surface to reduce the distortion of back-EMF in the spoke type IPMSM. Then, the finite element method (FEM) results...
Interior Permanent Magnet (IPM) motor has high efficiency and large torque because the motor utilizes both magnet torque and reluctance torque depending on magnetic saliency. Most common methods used in control of IPM motor are current vector control and Direct Torque Control (DTC). However, it is too difficult to simulation these control methods including nonlinearity and space harmonics. In this...
The permanent magnet synchronous motor (PMSM) is very useful in applications. Vector control of PMSM is popular kind of its control .But nonlinearity of PMSM and existence of inverter in its control circuit caused that optimal gains with conventional optimal control theory can not be found. In this paper first the complete vector control of PMS (including flux leakage model) is modeled with poincare...
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