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Motors & Generators
Clawpole
Creating a VHDL-AMS model of a claw-pole alternator
A VHDL-AMS model of a claw-pole alternator is created using the System Model Generator. The SMG creates a Response Surface Model (RSM) of the claw-pole by driving MagNet to execute a number of static solves at different phase currents and rotor positions. This RSM is embedded in the VHDL-AMS file to create a component which is functionally equivalent to the original MagNet model, but which can be evaluated extremely quickly in a transient circuit simulation.
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Simulating a claw-pole alternator in an automobile electrical system environment
Since a claw-pole alternator can be found under the hood of almost any car, it is one of the most optimized of magnetic machines, balancing manufacturing costs against efficiency. Simulating its dynamic electromagnetic characteristics is challenging, but careful analysis of the results can lead to further improvements. Here, MagNet's Transient 3d with Motion solver simulates this machine in the environment of an automobile electrical system, including a three-phase diode bridge and a resistive load.
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Showcasing the automatic current distribution calculation feature of MagNet
This model showcases the automatic current distribution calculation feature of MagNet. The device is a claw-pole automobile alternator with a three-phase output winding on the stator. A field coil around the rotor core is used to induce flux in the output windings as the rotor spins.
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