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This paper presents an analytic method for calculating the operating point of any AC drive, either synchronous or asynchronous. The method selects the operating condition for any reference torque under current and voltage limitation. Implementation is based on a normalized expression of torque, speed-voltage limits and current limits, yielding to a restricted range of the variable variation, regardless...
Traction system based on electric driven Continuously Variable Transmission (e-CVT) is widely used in full hybrid powertrains for passenger cars. This paper deals with a new solution for the layout of the e-CVT, which is based on coaxial and concentric arrangement of the electric machines. The hybrid electric transmission based on the e-CVT is proposed for the application on agricultural tractors.
A torque control scheme that utilizes the stator flux components as control variables, applied to a speed-sensorless induction motor drive, is presented. The proposed scheme allows the motor to exploit the maximum torque capability in the whole speed range, and shows a reduced dependence from the motor parameters. It is based on a control algorithm that decreases the d-component of the stator flux...
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