POWER SUPPLY SYSTEM Russian patent published in 2018 - IPC H02M5/42 H02J3/02 

FIELD: electrical equipment.

SUBSTANCE: invention relates to the field of electrical equipment, namely the power conversion equipment. Power supply system comprises power supply unit 1 with the current source properties, power transmission line (ETL) 2, represented as two segments 2.1-2.2 and 2.3-2.4. One ETL 2 end 2.1 is connected to the current source 1 terminal 1.1, which second terminal 1.2 is connected to the earthing switch 3 grounded terminal 3.1, and to the latter terminal 3.2 the ETL 2 is connected by its end 2.4. Terminals 3.1, 3.2 with earthing switch 3 form the “return wire”, more precisely, the inverse conductive medium. Converter is made on elements 4÷11. Its power input is formed by the its transistor 4 terminals 4.1 and 4.2, and the output by the terminals 12, 13. Connecting the consumer 14 thereto. Converter transistors 4, 8 receive are controlled from the control units (CU) 15, 16, which power supply is provided by the in-house needs power supply unit (HPSU) 17, which, in turn, is supplied from the storage capacitor 6. CU 15 is the negative voltage feedback circuit (NVFC), and performs the DC voltage component U_C0 stabilization on the capacitor 6. CU 15 is implemented on the comparator with hysteresis 15.1. Coupling unit (CU) 15.2 provides the function of coming from the capacitor voltage normalization (and, if necessary, its galvanic isolation). Setting unit 15.3 sets the U_C0 constant component level on the capacitor 6. CU 16 inverter (on elements 7, 8) contains the control pulses generator (CPG) 16.1 with the corresponding duty cycle and the driver 16.2. By its power terminals the transistor 4 is included into the ETL break between its terminals 2.2 and 2.3. Between the same terminals, a chain from the in-series connected diode 5.1, storage capacitor 6, and diode 5.2 is connected.

EFFECT: technical result consists in increase in the voltage stabilization accuracy at the power supply system converter output terminals.

1 cl, 1 dwg