Invention Grant
- Patent Title: Compressor protection and grid fault detection device
- Patent Title (中): 压缩机保护和电网故障检测装置
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Application No.: US14846876Application Date: 2015-09-07
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Publication No.: US09472944B2Publication Date: 2016-10-18
- Inventor: Nagaraj Jayanth , George Ramayya
- Applicant: Emerson Climate Technologies, Inc.
- Applicant Address: US OH Sidney
- Assignee: Emerson Climate Technologies, Inc.
- Current Assignee: Emerson Climate Technologies, Inc.
- Current Assignee Address: US OH Sidney
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: H02H7/085
- IPC: H02H7/085 ; H02H7/20 ; F25B49/02

Abstract:
A method of operating a refrigeration system that receives power from an electrical grid includes operating at least one component of the refrigeration system in a first state. The method includes detecting a fault event of the electrical grid in response to a concurrent increase in amount of current drawn by the component and decrease in voltage of power received by the component. The method includes, in response to detecting the fault event, switching the component from the first state to a second state, wherein the component consumes less power in the second state than in the first state. The method includes determining a first delay period according to a random process. The method includes identifying a conclusion of the fault event. The method includes, in response to the conclusion of the fault event, waiting for the first delay period before switching the component back to the first state.
Public/Granted literature
- US20160190799A1 COMPRESSOR PROTECTION AND GRID FAULT DETECTION DEVICE Public/Granted day:2016-06-30
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