{"id":55468,"date":"2024-02-12T09:58:40","date_gmt":"2024-02-12T14:58:40","guid":{"rendered":"https:\/\/blogs.sw.siemens.com\/simcenter\/?p=55468"},"modified":"2026-03-26T06:38:57","modified_gmt":"2026-03-26T10:38:57","slug":"new-electric-motor-design-tools-with-realistic-workloads","status":"publish","type":"post","link":"https:\/\/blogs.sw.siemens.com\/simcenter\/new-electric-motor-design-tools-with-realistic-workloads\/","title":{"rendered":"New electric motor design tools with realistic workloads"},"content":{"rendered":"\n

Simcenter E-Machine Design and Simcenter Amesim working together for better electric motor design<\/h2>\n\n\n\n

The typical electric motor design sequence involves many iterations, especially during the early design stages. Identifying the most important load points for a given design problem is necessary but complex.<\/p>\n\n\n\n

Our release of the Simcenter Motorsolve software in 2020 added a new set of experiments which leveraged user-defined duty-cycles. This capability has been enhanced in Simcenter Motorsolve\u2019s replacement, the Simcenter E-Machine Design software. With an exchange of the machine performance requirements from Simcenter Amesim, Simcenter E-Machine Design can use realistic vehicle behavior to advance the design process. The losses and top five most important load points are calculated and transferred between the software.<\/p>\n\n\n

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Load point workflow between Simcenter Amesim and Simcenter E-Machine Design<\/strong><\/figcaption><\/figure><\/div>\n\n\n

This technology includes several standard Electric Vehicle drive-cycles for the automotive sector. To activate this feature, the user simply defines the desired vehicle torque and rotor speed details.<\/p>\n\n\n\n

Pulse Width Modulation analysis with arbitrary voltages<\/strong><\/h2>\n\n\n\n
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Calculating machine performance based on measured or arbitrary voltages using traditional finite element analysis [FEA] can be time-consuming and impractical due to the signal\u2019s switching frequency. In Simcenter E-Machine Design, the Pulse Width Modulation (PWM) analysis experiments utilize analytical analysis coupled with FEA to determine accurate performance in a timely fashion. An additional option of assigning user-defined arbitrary voltages to the Phase Windings is now part of the PWM analysis capability.<\/p>\n\n\n\n

Therefore, digital twins or model calibrations can be based on measurements imported directly from dynamometers or other sources.<\/p>\n<\/div>\n\n\n\n

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User-specific arbitrary voltage profile<\/strong><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

Halbach Array electric motor design in Simcenter E-Machine Design<\/strong><\/p>\n\n\n\n

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Halbach array template in<\/strong>
Simcenter E-Machine Design<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n\n
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Rotor templates support the creation of Halbach array patterns with even and odd numbered magnet segments per pole. It also includes the ability to apply unevenly distributed segments with user-defined magnetization directions. As a Halbach array generates the poles in a desired volume (the air-gap), there is a secondary benefit to the Rotor design. There is flux cancellation in the volume where the core would be, and so no back iron or steel is required; a nonmagnetic lightweight core can be used instead, significantly reducing the mass of the Rotor.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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\u201c\u2026electric motors based on the Halbach array offer measurable benefits over conventional designs, including high power density and high efficiency. One of the enablers of these benefits is that a Halbach array motor does not require Rotor laminations or back iron, so the motor is essentially ironless. This significantly reduces eddy current losses and hysteresis losses\u2026 \u201c<\/em><\/p>\nExcerpt from \u201cWhat is a Halbach array and how is it used in electric motors?<\/a>\u201d by Danielle Collins highlights the benefits of Halbach array electric motor designs.<\/cite><\/blockquote>\n\n\n\n

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Maximum torque and flux weakening control<\/strong><\/h2>\n\n\n\n
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Motor performance is highly dependent on the control strategy. This link between the motor and the electronics impacts performance parameters like efficiency, loss and the machine\u2019s output power. Simcenter E-Machine Design continues to support these two key control strategies.<\/p>\n\n\n\n

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  • Maximum torque per amps<\/li>\n\n\n\n
  • Flux weakening based on optimal load points<\/li>\n<\/ul>\n\n\n\n

    You can have confidence that your experimental data more accurately replicates the physical conditions using these control strategies.<\/p>\n<\/div>\n\n\n\n

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    \"Efficiency
    Efficiency map based on MTPA and Flux weakening<\/strong><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

    The figure above showcases the Efficiency map experiment for an electric machine where the newly added MTPA drive cycle and the Flux weakening control strategy are combined.<\/p>\n\n\n\n

    Simcenter E-Machine Design impacts the electric machine design process. Significantly improve your efforts by including realistic vehicle behavior and control strategies in your experimental outcomes.<\/p>\n\n\n\n

    To learn more about Simcenter E-Machine Design please consider the following:
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