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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Influence of Third Harmonic Back EMF on Modeling and Remediation of Winding Short Circuit in a Multiphase PM Machine With FSCWs
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Influence of Third Harmonic Back EMF on Modeling and Remediation of Winding Short Circuit in a Multiphase PM Machine With FSCWs

机译：三次谐波反电动势对带FSCW的多相永磁电机绕组短路建模和修复的影响

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摘要

For multiphase open-winding permanent-magnet (PM) machines, both back electromotive force (EMF) and short-circuit current (SCC) contain third harmonic components that interact with each other and produce even-harmonic torque pulsation. This paper investigates the impact of the third harmonic component on SCC prediction, torque pulsation and postfault remediation method in case of a winding short-circuit fault. Analytical modeling of SCC is developed, which shows that the third harmonic SCC increases the maximum value of SCC. It is found that the transient SCC is heavily influenced by the initial phase angle of winding axis and exciting current when the fault is incepted. The braking torque due to the negative q-axis SCC component is investigated, which peaks at low speed as winding inductive impedance goes down. The comparison of two postfault remediation methods for single-phase short-circuit faults shows the importance of considering the third harmonics of SCC and back EMF in terms of torque performance. Finally, the theoretical results of SCC, braking torque, and remediation methods are verified and evaluated with experimental results.
机译：对于多相开卷式永磁（PM）电机，反电动势（EMF）和短路电流（SCC）都包含彼此相互作用的三次谐波分量，并产生均匀的谐波转矩脉动。本文研究了三次谐波分量对绕组短路故障下SCC预测，转矩脉动和故障后补救方法的影响。建立了SCC的解析模型，表明三次谐波SCC增加了SCC的最大值。发现故障发生时，瞬态SCC受绕组轴初始相位角和励磁电流的影响很大。研究了由负q轴SCC分量引起的制动转矩，该转矩在低速时随着绕组电感阻抗的降低而达到峰值。两种针对单相短路故障的故障后补救方法的比较表明，就转矩性能而言，考虑SCC和反电动势的三次谐波非常重要。最后，通过实验结果验证和评估了SCC，制动扭矩和修复方法的理论结果。

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