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首页> 外文期刊>Power Electronics, IET >Enhanced rotor field-oriented control of multiphase induction machines based on symmetrical components theory
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Enhanced rotor field-oriented control of multiphase induction machines based on symmetrical components theory

机译：基于对称分量理论，增强了对多相感应机的转子现场控制

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摘要

Fault-tolerant capability greatly promoted the application of multiphase machines on safety-critical occasions, and fault-tolerant control strategies are required to suppress the torque ripples. Based on the generalised symmetrical components (SCs) theory, a general expression of the independent SCs is derived during the fault-tolerant operation of symmetrical multiphase machines in this study, and coefficients of the four basic rotating components in the general expressions are calculated for specific open-circuit conditions. Then the bidirectional rotating proportional-integral controllers are designed to control all the rotating components in each SC. Considering control loops for all the independent SCs, an enhanced rotor field-oriented control fault-tolerant strategy is proposed for symmetrical multiphase induction machines (IMs) with any phase number m. Furthermore, additional rotating current controllers in the first SC control loop are added to reduce the low-order current harmonics during the fault-tolerant operation. Experimental evaluations in terms of the transient, dynamic and harmonic performances on both five-phase and nine-phase IM drive platforms are provided to verify the effectiveness of the proposed fault-tolerant strategy.
机译：容错能力大大促进了多相机在安全关键场合应用，并且需要容错控制策略来抑制扭矩涟漪。基于广义对称分量（SCS）理论，在该研究中的对称多相机器的容错操作期间导出独立SCS的一般表达，并针对特定表达中的四个基本旋转组件的系数进行计算开路条件。然后，双向旋转比例积分控制器被设计成控制每个SC中的所有旋转部件。考虑到所有独立SC的控制回路，提出了增强的转子现场控制容错策略，用于具有任何相位数M的对称多相感应机（IMS）。此外，添加了第一SC控制回路中的附加旋转电流控制器以在容错操作期间减少低阶电流谐波。提供了在五相和九阶段IM驱动平台上的瞬态，动态和谐波性能方面的实验评估，以验证所提出的容错策略的有效性。

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