POWER SUPPLY SOURCE FOR ELECTRIC INSTALLATIONS Russian patent published in 2014 - IPC H02M7/00 H02M7/219 H02M7/25 

FIELD: electricity.

SUBSTANCE: device comprises three-phase rectifier with a filter loaded to voltage inverter with load, for example, with parallel LC-circuit, the inverter control unit coupled to the reference voltage setting unit and a voltage sensor, a current sensor, a temperature sensor and a pulse-width modulator; there is an additional matching transformer, an additional source of constant voltage and a bridge saturable core reactor, at that secondary winding of the matching transformer is connected to the load while primary winding is coupled to the above inverter through the in-series first diagonal of bridge saturable core reactor and current sensor, the second diagonal of the saturable core reactor is shunted by the linear choke and diode and connected through a key to the source of constant voltage, at that the key is installed in parallel to diode and is coupled through the input to the control circuit based on pulse-width modulator.

EFFECT: reduction of weight and dimensions of the current source, increase of efficiency factor and reliability.

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