US 12,719,393 B2 · Automatic voltage regulator for a generator

Abstract

A voltage regulator for an engine powered generator having a sampling system to sample an operating frequency of an alternating current at an electrical output of the generator. A detection system is configured to monitor the operating frequency of the generator. An excitation system is configured to alter either an excitation voltage or an excitation current of a field winding of an alternator of the engine when the operating frequency of the generator indicates a load impact at the electrical output of the generator. The excitation system then controls the excitation voltage or the excitation current as necessary to minimize the variation in the operating frequency in response to the load impact.

Claims19

Dependent claims

An engine powered generator comprising:

an internal combustion engine comprising a crankshaft;
an alternator comprising a rotor operably coupled to the crankshaft, the alternator configured to deliver electrical power at an electrical output;
and
a voltage regulator configured to regulate an excitation voltage applied to a field winding of the alternator, the voltage regulator comprising:
a sampling system which samples an operating frequency of an alternating current at the electrical output;
a detection system configured to compute a second derivative of the operating frequency;
and
an excitation system configured to alter one of the excitation voltage or an excitation current in response to the second derivative of the operating frequency indicating a load impact, the second derivative of the operating frequency indicating the load impact when a magnitude or a slope of the second derivative of the operating frequency exceeds a threshold.

5 more elements

Dependencies are inferred from the claim text.

Automatic voltage regulator for a generator

Life of this patent

Automatic voltage regulator for a generator

Life of this patent

Abstract

Claims19