Invention Grant
US08742733B2 Methods and apparatuses for elimination of torque pulsation in doubly fed induction generators using the field reconstruction method 有权
使用场重构方法消除双馈感应发电机中的转矩脉动的方法和装置

Methods and apparatuses for elimination of torque pulsation in doubly fed induction generators using the field reconstruction method
Abstract:
Methods and apparatuses for substantially eliminating torque pulsation in a doubly fed induction machine are disclosed. An example method comprises: measuring a stator current of the doubly fed induction machine, measuring a rotor current of the doubly fed induction machine, calculating a total magnetic flux density in an airgap of the doubly fed induction machine, calculating a tangential force density, calculating an electromagnetic torque, repeating the calculation of the electromagnetic torque over one electrical cycle to estimate a torque pulsation, determining a new rotor current that substantially eliminates the torque pulsation by referencing a set of optimal rotor currents in a look-up table, and changing the rotor current in response to the determination. Other embodiments are described and claimed.
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