DEVICE FOR REGULATION OF FREQUENCY IN N-PHASE ELECTRIC EQUIPMENT Russian patent published in 1997 - IPC

FIELD: autonomous wind and water-powered electric plants. SUBSTANCE: device has detector of phase voltage frequency, first dummy groups which have m controlled resistor which are connected in parallel. In addition device has second dummy groups each of which has controlled resistor and which are connected in parallel to corresponding dummy group. Input of controlled resistor belongs to corresponding second dummy group is connected to m+1 output of control unit. EFFECT: simplified design, facilitated manufacturing due to decreased number of m controlled resistors of same type and nominal characteristics. 3 cl, 1 dwg