US 7,612,460 B2 · Engine-driven power generator

Abstract

The present invention provides an engine-driven synchronous power generator that selects the operation state with respect to the load of the power generator by controlling the revolution. The electronic governor 4 includes a target revolution determining unit 10 including a storage 101 for providing a constant target engine revolution irrespective of the load current, and a map 102 for providing the target engine revolution corresponding to the load. The target revolution corresponding to the revolution of no-load operation and loaded operation is set in the map 102. The storage 101 or the map 102 is selected by operating a switch 9. A governor motor 14 is controlled so that the actual engine revolution calculated in an engine revolution calculator 7 converges to the target revolution. An automotive voltage regulator (AVR) 15 for controlling the output voltage of the power generator 1 constant irrespective of the load is provided.

Claims6

Dependent claims

An engine-driven power generator configured by an engine and a synchronous power generator driven by the engine;

the engine-driven power generator comprising:
an electronic governor for controlling the revolution of the engine to a target value, the electronic governor including operation modes of a normal operation mode of maintaining the engine revolution substantially constant irrespective of the fluctuation in the load of the power generator, and an economic operation mode of increasing or decreasing the engine revolution within a predetermined allowable range according to the fluctuation in the load of the power generator;
and
switching means for selecting one of either the normal operation mode or the economic operation mode.

1 more element

Dependencies are inferred from the claim text.

Engine-driven power generator

Life of this patent

Engine-driven power generator

Life of this patent

Abstract

Claims6