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A novel V/F induction motor control system based on stator voltage oriented method is presented. This scheme includes dead time compensation, stator voltage compensation and anti-oscillation regulation, which can greatly improve the V/F systempsilas performance especially low frequency load capability and fast response capability. Different from conventional V/F methods, all the compensation and regulation...
The V/F controlled induction motor driver systems always suffer from middle frequency oscillations under light load conditions. Many methods were sponsored but always complex and parameters dependent. This paper present one simple and reliable method which can improve the systemspsila stability: First, one efficient dead-time compensating method was present, which can reduce the distortion of phase...
The paper presents a direct-torque-control scheme for a direct drive variable-speed permanent magnet synchronous generator (PMSG) for wind energy without any position sensor. Direct control of the rotating velocity and amplitude of the stator flux vector allows very fast torque response of PMSG according to the generator speed. Fixed switching frequency and very low torque ripple are obtained with...
The thrust ripples in permanent magnet linear synchronous motor are mainly generated by the distortion of the stator fluxlinkage distribution, reluctance force due to the relative position between the mover and stator, such as cogging force caused by the interaction between the permanent magnet and the iron slot, and the end effects. This is the significant drawback which will deteriorate the performance...
Method of sensorless speed estimation for induction motor based on neural network has been studied. With stator currents as input and the motor speed as output, a neural network has been trained by the principle of training off-line, estimating on-line. The neural network can imitate the activity of the induction motor well and estimate the motor speed on-line. The dynamic performance of the method...
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