In this article, a new high-frequency PMSM model is derived in order to obtain accurate absolute inductance and inductance saturation profile. Compared to traditional PMSM models, the proposed high-frequency model includes the components of high-frequency resistance and inductance derivative relative to current. Through this model, the difference between differential and absolute inductances is discussed in detail and the impact of high-frequency resistance on the inductance estimation is analyzed. In the next step, another method is proposed to decouple and eliminate the effect of high-frequency resistance from the composite inductance. It is shown that this approach yields highly precise absolute inductance measurement and remarkably reduces the effect of inductance derivative relative to current. These findings help to evaluate the saturation more accurately which is essential for robust observer and controller design. Finally, the effectiveness of proposed scheme is experimentally verified using SPMSM and IPMSM.

中文翻译：

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考虑高频电阻的PMSM绝对电感估计

在本文中，推导了一种新的高频PMSM模型，以获得准确的绝对电感和电感饱和曲线。与传统的PMSM模型相比，所提出的高频模型包括相对于电流的高频电阻和电感导数的分量。通过该模型，详细讨论了差分电感和绝对电感之间的差异，并分析了高频电阻对电感估计的影响。在下一步中，提出了另一种方法来从复合电感中去耦并消除高频电阻的影响。结果表明，该方法可实现高精度的绝对电感测量，并显着降低了电感导数相对于电流的影响。这些发现有助于更准确地评估饱和度，这对于鲁棒的观察者和控制器设计至关重要。最后，使用SPMSM和IPMSM对所提方案的有效性进行了实验验证。