초록

An electric power generator system including a switched capacitor controlled induction generator adapted to provide power at a regulated voltage and frequency. The system is adapted for autonomous operation for delivery of power with unity power factor to an external power grid.

대표청구항 ▼

An induction generator system comprising: A. an n-phase induction machine having an input shaft and at least n output lines, where n is an integer, wherein each output line is coupled to an associated output terminal, B. means for generating a frequency control signal representative of the differenc

An induction generator system comprising: A. an n-phase induction machine having an input shaft and at least n output lines, where n is an integer, wherein each output line is coupled to an associated output terminal, B. means for generating a frequency control signal representative of the difference between the frequency of the voltage of at least one of said output terminals and a reference value, C. torque generating means responsive to said frequency control signal for applying a torque to said input shaft, said applied torque being related to said frequency control signal, D. an N-stage switched capacitor array, where N is an integer, each stage including n capacitor networks, each network being associated with a pair of said output lines, wherein the capacitor networks within each stage are each characterized by a predetermined capacitance for that stage, and wherein each of said capacitor networks includes an associated capacitor switch means, each switch means being responsive to a trigger signal for selectively coupling said capacitor network across its associated pair of output lines, E. feedback means coupled to said output lines and including trigger means for generating said trigger signals, wherein the capacitor networks of X of said N stages are characterized by binary weighted capacitance values from stage to stage, where X is an integer, and wherein the capacitor networks of N-X of said N stages are characterized by substantially equal capacitance values from stage to stage.