INTELLIGENT SECONDARY POWER SOURCE Russian patent published in 2020 - IPC H02J9/06 

FIELD: electrical equipment.

SUBSTANCE: invention relates to devices in the field of electrical equipment, in particular to secondary power sources - DC voltage converters and/or pulsating current into DC voltage receiving input power via two independent channels (main and backup feeders) in a wide voltage range, in presence in input and output circuits of pulse-switching overvoltage and conductive radio interference, with galvanic decoupling of input and output circuits, and can be used to provide locomotive electronic equipment (SLUT, integrated train protection system, efficiency, radio stations, etc.) guaranteed with standard power supply on various types of traction rolling stock: electric locomotive, AC and AC electric trains, locomotive, diesel train and handcar. Proposed invention comprises at least one power supply unit, input module of radio interference filter and pulse-switching overvoltage, output module of radio interference and pulse-switching overvoltage filter, and may also contain uninterruptible power supply unit. Invention provides higher reliability of generating high-quality output voltage with wide range of input voltages from two independent feeders in presence of input and output circuits of pulse-switching overvoltage and conductive radio interference. Results are achieved by using a power supply unit combining a power module, a control and switching module, a microcontroller, filtering and protection against input/output switching circuits (pulse-switching over-voltages), control, monitoring and management of component parts of device, including switching power supply of device between inputs of pulsating and direct voltage depending on presence and quality of voltage at input on main and backup feeders, as well as with possibility of additional backup of output voltage unit uninterruptible power supply.

EFFECT: technical result achieved using the disclosed device is the possibility of selecting a supply network in accordance with a given algorithm, high efficiency of operation, high quality of output DC voltage, intellectual protection against short circuit, from excess of input and output voltage, protection against low input voltage.

4 cl, 1 dwg