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Examples
========

These examples measure the mechanical impedance of machine drives and the output admittance of grid converters from motulator simulations by frequency sweeps.


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Mechanical Impedance
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These examples measure the mechanical impedance of machine drives, i.e., the dynamics of the machine and its control system as seen from the shaft [#Har2023a]_.

.. rubric:: References

.. [#Har2023a] Hartikainen, Tiitinen, Laine, Hinkkanen, "Identification of mechanical impedance of an electric machine drive for drivetrain design," Proc. IEEE IEMDC, 2023, https://doi.org/10.1109/IEMDC55163.2023.10238992


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    <div class="sphx-glr-thumbcontainer" tooltip="This example measures the mechanical impedance of a 45-kW induction machine (IM) drive under open-loop V/Hz control and under observer-based V/Hz (O-V/Hz) control. The machine parameters correspond to [#Har2023]_.">

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  :doc:`/examples/drive/plot_45kw_im_vhz_mechanical_impedance`

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Output Admittance
-----------------

These examples measure the output admittance of grid converters [#Maa2026a]_.

.. rubric:: References

.. [#Maa2026a] Määttä, Kukkola, Seppänen, Hinkkanen, "Open-source Python tool for grid converter output admittance identification," 2026, https://arxiv.org/abs/2607.10653


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    <div class="sphx-glr-thumbcontainer" tooltip="This example measures the output admittance of a 10-kVA grid-following (GFL) converter. The converter and grid models are the same as in the example 10-kVA GFL converter of motulator.">

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  :doc:`/examples/grid/plot_10kva_gfl_output_admittance`

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      <div class="sphx-glr-thumbnail-title">10-kVA, GFL, output admittance</div>
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    <div class="sphx-glr-thumbcontainer" tooltip="This example measures the output admittance of a 12.5-kVA disturbance-observer-based grid-forming (DO-GFM) converter. The converter and grid models are the same as in the example 12.5-kVA DO-GFM converter of motulator.">

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  :doc:`/examples/grid/plot_13kva_do_gfm_output_admittance`

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   /examples/drive/index.rst
   /examples/grid/index.rst


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      :download:`Download all examples in Python source code: examples_python.zip </examples/examples_python.zip>`

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      :download:`Download all examples in Jupyter notebooks: examples_jupyter.zip </examples/examples_jupyter.zip>`


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    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_