Invention Grant
US08278934B2 Robust AC chassis fault detection using PWM sideband harmonics
有权
使用PWM边带谐波的鲁棒交流电机箱故障检测
- Patent Title: Robust AC chassis fault detection using PWM sideband harmonics
- Patent Title (中): 使用PWM边带谐波的鲁棒交流电机箱故障检测
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Application No.: US12371241Application Date: 2009-02-13
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Publication No.: US08278934B2Publication Date: 2012-10-02
- Inventor: Michael Kon-King Wang
- Applicant: Michael Kon-King Wang
- Applicant Address: US NY Johnson City
- Assignee: BAE Systems Controls Inc.
- Current Assignee: BAE Systems Controls Inc.
- Current Assignee Address: US NY Johnson City
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Paul J. Esatto, Jr.
- Main IPC: G01R31/14
- IPC: G01R31/14 ; G01R31/08
Abstract:
A method, apparatus and computer program for detecting an AC chassis fault on one or more DC/AC converters having a load is disclosed, including receiving a chassis voltage VChassis signal from between DC link and a chassis ground from the DC/AC converter, capturing a side band harmonic of the chassis voltage VChassis signal, determining a peak magnitude value related to the side band harmonic, comparing the peak magnitude value to a predetermined threshold value, wherein if said peak magnitude value equals or exceeds the predetermined threshold value, an AC chassis fault condition is detected.
Public/Granted literature
- US20100207634A1 ROBUST AC CHASSIS FAULT DETECTION USING PWM SIDEBAND HARMONICS Public/Granted day:2010-08-19
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