What type of voltage does the Permanent Magnet Assembly (PMA) produce?

The Permanent Magnet Assembly (PMA) produces alternating current (AC) voltage. This is due to the way magnetic fields interact within the PMA as the turbine engine operates. As the permanent magnets rotate in relation to the stator, they create a changing magnetic field which induces an alternating voltage in the stator windings according to Faraday's law of electromagnetic induction. This phenomenon is fundamental in generating the necessary electrical power for various systems within gas turbine engines.

In the context of gas turbine systems, AC voltage is often used for powering various electrical components, providing a reliable energy source that can be easily transformed or rectified for specific applications.