초록 ▼

A particularly advantageous power converter, suitable for use in an engine powered generator system. A signal simulating a desired AC waveform is produced by a converter circuit at first and second converter output terminals. The converter circuit, responsive to respective switching signals applied

A particularly advantageous power converter, suitable for use in an engine powered generator system. A signal simulating a desired AC waveform is produced by a converter circuit at first and second converter output terminals. The converter circuit, responsive to respective switching signals applied thereto, selectively effects current paths between a juncture node and one of the first and second converter output terminals and between a common rail and the other of the first and second converter output terminals. A controller selectively generates control signals to the converter circuit and to a mechanism for varying the magnitude of the juncture node voltage, to create a predetermined waveform at the converter output terminals simulating the desired AC waveform. A number of alternative embodiments for producing a simulated sine wave are described, as well as accommodations for inductive loads, and mechanisms for minimizing power dissipation during the switching interval.

대표청구항 ▼

[ We claim:] [1.] Apparatus for a producing a signal simulating a desired AC waveform, comprising:first and second converter output terminals;a juncture node, at a voltage of predetermined polarity and variable magnitude relative to a common rail;a converter circuit, responsive to respective control

[ We claim:] [1.] Apparatus for a producing a signal simulating a desired AC waveform, comprising:first and second converter output terminals;a juncture node, at a voltage of predetermined polarity and variable magnitude relative to a common rail;a converter circuit, responsive to respective control signals applied thereto, for selectively effecting current paths between the juncture node and one of the first and second converter output terminals and between the common rail and the other of the first and second converter output terminals;means, responsive to control signals applied thereto, for controllably varying the magnitude of the juncture node voltage; anda controller for selectively generating the control signals to the converter circuit and to the means for varying the magnitude of the juncture node voltage, to create a predetermined waveform at the converter output terminals simulating the desired AC waveform.