초록 ▼

An electrical generator provides an output at a main stator winding which is excited by a main rotor winding. The main rotor winding is connected via a rectifier to a main exciter rotor winding which is excited by a main exciter field winding. A control circuit controls excitation of the main excite

An electrical generator provides an output at a main stator winding which is excited by a main rotor winding. The main rotor winding is connected via a rectifier to a main exciter rotor winding which is excited by a main exciter field winding. A control circuit controls excitation of the main exciter field winding so as to stabilise the generator output voltage. The control circuit includes a detector for detecting excessive generator output voltage and a transistor switch for connecting a resistor in the current recirculation path of the main exciter field winding so as to prevent transient over-voltages caused by sudden load reductions.

대표청구항 ▼

[ We claim:] [1.] A control circuit for an electrical generator of the type comprising a main stator winding for providing a generator output, said main stator winding being excited by a main rotor winding, a main exciter rotor winding for energizing said main rotor winding, and a main exciter field

[ We claim:] [1.] A control circuit for an electrical generator of the type comprising a main stator winding for providing a generator output, said main stator winding being excited by a main rotor winding, a main exciter rotor winding for energizing said main rotor winding, and a main exciter field winding for exciting said main exciter rotor winding, the control circuit comprising a detector for detecting an excessive generator output voltage, and a current recirculation path connected across said main exciter field winding, said current recirculation path including a resistor and a first switch for connecting said resistor in series in said current recirculation path in response to detection by said detector of an excessive generator output voltage, the control circuit having a forward current path including a second switch and the main exciter field winding, said forward current path excluding said resistor and said first switch.