International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
www.ijsr.net | Most Trusted Research Journal Since Year 2012

ISSN: 2319-7064

Research Paper | Electrical Engineering | Taiwan | Volume 8 Issue 12, December 2019

Identification and Restoration of IPMSM Nonlinear EM Characteristics for Motion Control Dynamic Simulation

Kuei-Tsun Chen

This paper is about identifying electromagnetic (EM) nonlinearities of IPMSM using FEM process; specifically, the extracted nonlinear EM elements are restored into dynamic model for variable speed control simulation. And, for the requirement of being closer to actual IPMSM dynamical behavior, non-ideal aspects such as iron-core saturation and cross-saturation between d-/q- magnetic circuits as well as slot-effects should all be included. The former reveals the temporal harmonics, while the later shows the spatial harmonics. Then, the iron loss resistance (Ri) is introduced by correcting the d-/q- equivalent circuit, so as to account for the magnetic losses associated with the above EM nonlinear elements. In this study, data of these nonlinear elements, such as d-/q- inductances (Ld, Lq), BEMF coefficients (Ke) and cogging torque were extracted through FEM software, which are transformed into Look-Up Table (LUT) blocks and setup in the dynamic circuit-control model. This nonlinearized model (as Model-III) can be verified by coupling simulation between FEM (2D) and relevant dynamic model (as Model-IV) with current output/voltage input method. Besides, through the implementation of this identification and restoration process, the simulation time can be greatly reduced from about 24 hours required by Model-IV to only less than 5 minutes for Model-III, and it still keeps close simulation results between the two models.

Keywords: IPMSM, non-linear EM characteristics, PM, saturation/cross-saturation, temporal/spatial harmonics, d-q inductances, BEMF coefficient, cogging torque, iron-loss resistance, direct-link coupling, current-output/voltage-input

Edition: Volume 8 Issue 12, December 2019

Pages: 458 - 470


How to Cite this Article?

Kuei-Tsun Chen, "Identification and Restoration of IPMSM Nonlinear EM Characteristics for Motion Control Dynamic Simulation", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=ART20203221, Volume 8 Issue 12, December 2019, 458 - 470

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Identification and Restoration of IPMSM Nonlinear EM Characteristics for Motion Control Dynamic Simulation

Kuei-Tsun Chen

Share this article

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