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首页> 外文期刊>IEEE Transactions on Energy Conversion >Modelling and identification of synchronous machines, a new approach with an extended frequency range
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Modelling and identification of synchronous machines, a new approach with an extended frequency range

机译：同步电机的建模和识别，一种扩展频率范围的新方法

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摘要

Correct modeling of turbogenerators is difficult, as currents are flowing during transients not only in the field and damper winding but also in the solid rotor iron. To model this effect, especially at high frequencies, new model structures called ladder networks are introduced. Their parameters are identified by combining the standstill frequency response measurements with the results of the standardized three-phase no-load short-circuit test. By means of this combination the errors in the standstill frequency responses, caused by the iron nonlinearity and the contact uncertainty of the slot wedges at standstill, are expected to be reduced. Both the new ladder networks and the standard models are used to simulate disturbances for comparison. In some cases (three-phase terminal fault out-of-phase synchronization) both models yield equivalent results, but in other cases (operation after a close-up fault) the results of the two models can differ considerably.
机译：涡轮发电机的正确建模非常困难，因为在瞬变过程中电流不仅在励磁绕组和阻尼绕组中流过，而且在实心转子铁中流过。为了对此效果进行建模，尤其是在高频下，引入了称为梯形网络的新模型结构。通过将静止频率响应测量结果与标准化的三相空载短路测试结果相结合，可以确定其参数。通过这种组合，可以减少由铁的非线性和静止时槽楔的接触不确定性引起的静止频率响应误差。新的梯形网络和标准模型都用于模拟干扰进行比较。在某些情况下（三相终端故障异相同步），两个模型都得出相同的结果，但是在其他情况下（在发生特写故障后运行），两个模型的结果可能会有很大差异。

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