Compressor protection and grid fault detection device

Patent metadata

Field	Value
Publication number	US-9130370-B2
Application number	US-201314101155-A
Country	US
Kind code	B2
Filing date	Dec 9, 2013
Priority date	Feb 20, 2008
Publication date	Sep 8, 2015
Grant date	Sep 8, 2015

Abstract

A system includes a control module and a monitor module. The control module selectively operates a component of the system in an ON state. The system receives power from an electrical grid. The monitor module selectively detects a fault event of the electrical grid in response to (i) an amount of current drawn by the component or (ii) a voltage of power received by the component. In response to detecting the fault event, the control module switches the component from the ON state to a second state, determines a first delay period according to a random process, identifies an apparent conclusion of the fault event, and in response to the apparent conclusion of the fault, waits for the first delay period before switching the component back to the ON state. The component consumes less power in the second state than in the ON state.

First claim

What is claimed is:

1. A method comprising:
selectively operating at least one component of a system in an ON state, wherein the system receives power from an electrical grid;
selectively detecting a fault event of the electrical grid in response to at least one of (i) an amount of current drawn by the at least one component and (ii) a voltage of power received by the at least one component;
in response to detecting the fault event, switching the at least one component from th…

Assignees

• Emerson Climate Technologies

Inventors

• Jayanth Nagaraj
• Ramayya George

Classifications

• G01R31/343

  Physics · mapped topic

• G01R19/16538

  Physics · mapped topic

• F25B2700/151

  Mechanical Engineering · mapped topic

• G01R19/10 Primary

  Physics · mapped topic

• F25B2700/13

  Mechanical Engineering · mapped topic