MAGNETIC BEATING EXCITING CIRCUIT Russian patent published in 2014 - IPC H03F3/217 

FIELD: electricity.

SUBSTANCE: magnetic beating exciting circuit actuated by a pair of voltage buses of direct-current line and is equipped with at least one amplifier ensuring output PWM exciting signal for excitation of the magnetic bearing winding, the above output PWM exciting signal is supplied to winding of the magnetic bearing through a plurality of exciting signal buses, at that the magnetic beating exciting circuit comprises a pair of voltage offset devices coupled to voltage buses of direct-current line and designed to supply a pair of voltage buses of the limiter limiting voltage offset from voltage buses of direct-current line, and the primary level-fixing device coupled between each voltage offset bus and one exciting signal bus corresponding to it.

EFFECT: limitation of load voltage without compromising dynamic characteristics of the bearing excitation amplifier.

12 cl, 6 dwg