DEVICE FOR STABILISING FREQUENCY AND VOLTAGE OF STAND-ALONE NON-CONTACT TYPE GENERATORS Russian patent published in 2009 - IPC H02P9/46 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, more specifically to stabilisation of frequency and voltage of stand-alone non-contact type alternating current generators and is meant for use in electric power supply systems for stabilising three-phase voltage from alternating current sources. The device for stabilising frequency and voltage of stand-alone non-contact generators contains a non-contact type generator (1), directly series-connected frequency converter (2), output filter (3), current transformer block (4), and output terminals (5). The output of the generator is also connected to excitation capacitors (6), connected to a voltage stabiliser unit (7), which contains a rectifier (8), power transistor (9), control system (10), the input of which is connected to output terminals (5) of the converter through a transformer-rectifier unit (11). The cosine synchronisation unit (12) is connected to the output of the generator (11) and to control signal generating units (13, 14 and 15), which are also connected to the main oscillator (16). Each control signal generating unit (13, 14, 15) contains first and second comparators (17 and 18), first and second AND logic elements (19, 20), first and second pulse distributors (21, 22) and a current sensor (23).

EFFECT: increased reliability of the device for stabilising frequency and voltage of stand-alone non-contact type generators.

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