GENERATOR OF LOW AND EXTREMELY LOW FREQUNCIES AND METHOD OF ITS CONTROL Russian patent published in 2008 - IPC H02M7/527 

FIELD: electrical engineering.

SUBSTANCE: generator of low and extremely low frequencies contains rectifier with parallel connected battery of capacitors, inverter and primary control system. RC-circuit is connected in parallel to RL-load of inverter, at that identical poles of rectifier and inverter are connected via fully controlled valve. Control inlet of fully controlled valve is connected via control pulse shaper to the primary control system. Inverter design on the basis of single-operational thyristors without artificial commutation circuit reduces static and dynamic losses in it. Signal for connection of thyristors of one of the inverter diagonals and the last locking pulse of fully controlled valve are sent simultaneously. The first pulse for connection of fully controlled valve is sent after time delay Δt after signal supply for connection of thyristors of the other inverter diagonal, at that Δt = T·ϕ/2π, where T - measured in seconds period of generator output frequency, ϕ - measured in radians shift angle between vectors of voltage and current in RL-load of generator.

EFFECT: method of control in emergency mode increases generator reliability.

3 cl, 2 dwg