Invention Grant
- Patent Title: Compressor having a control and diagnostic module
- Patent Title (中): 压缩机具有控制和诊断模块
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Application No.: US14033604Application Date: 2013-09-23
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Publication No.: US09310439B2Publication Date: 2016-04-12
- Inventor: Hung M. Pham , Fadi M. Alsaleem
- 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: G01R31/28
- IPC: G01R31/28 ; G01R31/34 ; G01R31/02

Abstract:
An apparatus includes a voltage sensor, a current sensor, and a controller. The voltage sensor measures voltage values of alternating current power supplied to a capacitor. The capacitor is electrically coupled to a compressor. The current sensor measures current values of the alternating current power. The controller is configured to receive the voltage values and the current values. The controller is configured to determine a first power factor value based on at least one of the voltage values and at least one of the current values. The controller is configured to selectively detect a first capacitor fault in response to concurrent determination that (i) the first power factor value is less than a first power factor threshold and (ii) a first current value of the current values is greater than a first current threshold. The first capacitor fault indicates that a capacitance of the capacitor has degraded.
Public/Granted literature
- US20140084836A1 COMPRESSOR HAVING A CONTROL AND DIAGNOSTIC MODULE Public/Granted day:2014-03-27
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