TELECOMMUNICATION AGENCY POWER SUPPLY SYSTEM Russian patent published in 2009 - IPC H02J7/34 

FIELD: electricity.

SUBSTANCE: invention relates to electrical engineering and may be used as power supply system for important DC and AC consumers setting high requirements to the voltage stability. The system includes network, storage battery, rectifier, isolation diodes 1 and 2, direct voltage stabiliser, direct current buses, rotary set containing AC electronic motor and generator and synchronous generator and AC buses. In addition, the rectifier with two outputs is connected to the mains. Besides, the first output voltage is supplied to the direct voltage stabiliser and further to DC buses. The additional output voltage is used for the battery charging if voltage is available in the mains. The AC electronic motor is also provided with the first and second pairs of output terminals. Besides, the first pair is coupled with DC buses, while the second one is used for the storage battery charging when voltage is unavailable in the mains. Voltage is stable on AC buses due to the stable frequency of common shaft rotation ensured by AC electronic motor power supply voltage stability. The shaft is common for electric machines.

EFFECT: improved stability.

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