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A SWITCHING POWER AMPLIFIER FOR ACTIVE MAGNETIC SUSPENSIONS
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| Author(s) |
S. Carabelli; A. Crivelli; A. Iannantuoni; R. Ippoliti; F. Maddaleno; M. Muzzarelli |
| Abstract |
The design of a switching power amplifier is tailored
for the characteristic impedance represented by the
driving coil windings of an active magnetic suspension.
A full bridge amplifier with two active switches
and two diodes is implemented to obtain a unidirectional
output current and bipolar output voltage. In
order to decrease the electrical noise, the bridge is
driven to obtain a three level output voltage. A double
edge PWM modulation with triangular wave, a
common mode and a differential mode filters are used
to reduce the output frequency contents. System has
been tested on a rotor suspended in a complete industrial
magnetic suspension. |
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| Filename: | Unnamed file |
| Filesize: | 498 KB |
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| Type |
Members Only |
| Date |
Last modified 2016-03-10 by System |
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