Patent ID: 9247593
Filing Date: 2016-01-26
CPC Classification: H02M,H05B,Y02B

Claim Text:
1. A three-phase power supply comprising a three-phase AC power supply; a three-phase rectifier bridge circuit of six rectifying diodes connected to the three-phase alternating current (AC) power supply and configured to rectify received three phase AC power for generating a ripple direct current (DC) voltage of a DC power supply system, wherein the six diodes form three pairs of two rectifying diodes connected in series at a connection point, one pair of two rectifying diodes associated with one phase of the three-phase AC power supply connected to the connection point, wherein each cathode of one of the two diodes of the three pairs not connected to the connection point is connected to +U pole of the DC power supply system supplying an electronic device and each anode of one of the two diodes of the three pairs not connected to the connection point is connected to −U pole of the DC power supply system supplying the electronic device, a plurality of rectifying units, wherein one rectifying unit for each phase having one light emitting diode (LED) and one field-effect transistor (FET) having a gate activated by the LED of the rectifying unit and connected in parallel with one rectifying diode of the three-phase rectifier bridge circuit and conductive in the same direction as the rectifying diode bypassed by the FET and switched on by the gate using the LED; and a control arrangement provided with a microcontroller having outputs and inputs connected to each cathode of one of the two diodes of the three pairs not connected to the connection point, each output of the microcontroller linked to one gate for activating the FET bypassing the rectifying diode through which flows rectified current.