| 摘要 |
Process applicable to commercial devices, based on the determination of the braking torque and its variation with the rotational speed. It involves the reaction magnetic field produced by the currents induced by means of the introduction of two phenomenological parameters whose values are given in the method which depend exclusively on the geometry of the device with the advantage of there being no need to solve the Maxwell's equations. In addition, it takes into account, in three implementation stages, electrical and magnetic properties, including the non-linear nature of the magnetic susceptibility of the materials as well as the dimensions and position of the various elements making up the speed limiter. The three stages of the method which are proposed are: 1) calculation of the magnetic field in the flywheel for velocity zero B by means of resolution of the magnetic circuit; 2) calculation of the magnetic field B in each element of the flywheel for each angular velocity, by means of a self-consistent numerical method which takes into account the numerical relationship between the field and the magnetic induction in the flywheel by means of the commutation curve at 50Hz; 3) calculation of the total theoretical braking torque.
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