Multi-phase power meter configured for monitoring generator battery voltage
First Claim
Patent Images
1. A system for determining the state of health of a generator battery and the ability of the battery to supply a generator starter motor with start-up energy, the system comprising:
- a generator having a starter motor and electrical outputs;
a battery electrically coupled to the starter motor of the generator; and
a monitoring system including an electrical meter having a first plurality of terminals electrically connected to the electrical outputs of the generator for receiving signals from the electrical outputs of the generator and a terminal electrically connected to the battery for receiving a signal from the battery, the monitoring system being configured to;
monitor electrical characteristics of power supplied from the electrical outputs of the generator using the first plurality of terminals of the electrical meter,capture a profile of voltage across terminals of the battery during a supply of electrical energy from the battery to the starter motor through the terminal of the electrical meter electrically connected to the battery,define one or more regions of a reference voltage profile, each of the one or more regions having a duration and a magnitude of voltage change,generate one or more mathematical equations describing the reference voltage profile in the one or more regions,define statistical process control limits about the one or more mathematical equations,compare the captured voltage profile to the reference voltage profile and determine if a difference between the captured voltage profile and reference voltage profile exceeds an acceptable amount, andissue a warning responsive to data points in the captured battery profile violating a statistical process control rule relative to the statistical process control limits.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed herein are embodiments of systems and methods for determining the state of health of a generator battery set and its ability to supply generator starter motor with start-up energy by capturing a profile of voltage across terminals of the battery during a supply of electrical energy from the battery to the starter and comparing the captured voltage profile to a reference voltage profile to determine if a difference between the captured voltage profile and reference voltage profile exceeds an acceptable amount.
-
Citations
18 Claims
-
1. A system for determining the state of health of a generator battery and the ability of the battery to supply a generator starter motor with start-up energy, the system comprising:
-
a generator having a starter motor and electrical outputs; a battery electrically coupled to the starter motor of the generator; and a monitoring system including an electrical meter having a first plurality of terminals electrically connected to the electrical outputs of the generator for receiving signals from the electrical outputs of the generator and a terminal electrically connected to the battery for receiving a signal from the battery, the monitoring system being configured to; monitor electrical characteristics of power supplied from the electrical outputs of the generator using the first plurality of terminals of the electrical meter, capture a profile of voltage across terminals of the battery during a supply of electrical energy from the battery to the starter motor through the terminal of the electrical meter electrically connected to the battery, define one or more regions of a reference voltage profile, each of the one or more regions having a duration and a magnitude of voltage change, generate one or more mathematical equations describing the reference voltage profile in the one or more regions, define statistical process control limits about the one or more mathematical equations, compare the captured voltage profile to the reference voltage profile and determine if a difference between the captured voltage profile and reference voltage profile exceeds an acceptable amount, and issue a warning responsive to data points in the captured battery profile violating a statistical process control rule relative to the statistical process control limits. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10)
-
-
4. The system of clam 1, wherein the controller is further configured to cause the electrical meter to begin to capture the voltage profile with a pre-trigger capture delay prior to the beginning of a generator starting operation.
-
11. A method of determining the state of health of a generator battery and the ability of the battery to supply a generator starter motor with start-up energy, the method comprising:
-
building a reference voltage profile for generator starts; defining one or more regions of the reference voltage profile, each of the one or more regions having a duration and a magnitude of voltage change, generating one or more mathematical equations describing the reference voltage profile in the one or more regions, defining statistical process control limits about the one or more mathematical equations, monitoring characteristics of electrical power supplied by electrical outlets of the generator with an electrical meter using a first plurality of terminals of the electrical meter electrically connected to the electrical outlets of the generator; capturing a battery voltage profile during a generator start operation with the electrical meter through a terminal of the electrical meter electrically connected to the battery; comparing the captured battery voltage profile to the reference voltage profile; and issuing a warning responsive to data points in the captured battery profile violating a statistical process control rule relative to the statistical process control limits. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
-
Specification