Invention Grant
- Patent Title: System and method to determine electric motor efficiency using an equivalent circuit
- Patent Title (中): 使用等效电路确定电动机效率的系统和方法
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Application No.: US12132194Application Date: 2008-06-03
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Publication No.: US07956637B2Publication Date: 2011-06-07
- Inventor: Bin Lu , Thomas G. Habetler
- Applicant: Bin Lu , Thomas G. Habetler
- Applicant Address: US OH Cleveland
- Assignee: Eaton Corporation
- Current Assignee: Eaton Corporation
- Current Assignee Address: US OH Cleveland
- Agency: Ziolkowski Patent Solutions Group, SC
- Main IPC: G01R31/34
- IPC: G01R31/34
Abstract:
A system and method for determining electric motor efficiency includes a monitoring system having a processor programmed to determine efficiency of an electric motor under load while the electric motor is online. The determination of motor efficiency is independent of a rotor speed measurement. Further, the efficiency is based on a determination of stator winding resistance, an input voltage, and an input current. The determination of the stator winding resistance occurs while the electric motor under load is online.
Public/Granted literature
- US20090051308A1 SYSTEM AND METHOD TO DETERMINE ELECTRIC MOTOR EFFICIENCY USING AN EQUIVALENT CIRCUIT Public/Granted day:2009-02-26
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