Gould Inc.

James T Dimitrios

Graham R Phillips

John R Mezera

An electrical power generating system includes a prime mover having a throttle control for converting a source of input energy into a mechanical output. The system includes an electrical generator having a plurality of output windings and a field winding for exciting the output windings. The generator is mechanically coupled to the mechanical output of the prime mover. Means are provided for sensing a plurality of parameters related to the performance of the system and further means are provided for converting each of the sensed parameters into a digital signal indicative of the magnitude of the sensed parameter. Additional means are provided responsive to the digital signals for developing a plurality of electrical output signals. The electrical output signals are utilized to control either or both the generator and the prime mover to thereby control the output of the power generating system. The system is further provided with circuits for sensing the phase position of the generator output voltage and current and the voltage in a main electrical power conductor. Accordingly, when the generator output is added to the power in the main power conductors, it is done so in phase. Some of the parameters sensed are generator output voltage, current and frequency, generator field winding current and engine throttle position. A digital logic circuit controls the excitation of the generator field winding to thereby control the generator output voltage and current.

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Barrington, IL, United States of America

James T Dimitrios