Inductive Coupled In-Circuit Impedance Monitoring of Electrical System Using Two-Port ABCD Network Approach
By treating the inductive coupling probes and the electrical system to be monitored as three cascaded two-port ABCD networks, the in-circuit impedance of the electrical system can be extracted with ease. The proposed method simplifies the setup calibration and allows real-time impedance monitori...
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| Main Authors: | , , |
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| 其他作者: | |
| 格式: | Article |
| 語言: | English |
| 出版: |
2016
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| 主題: | |
| 在線閱讀: | https://hdl.handle.net/10356/81596 http://hdl.handle.net/10220/39556 |
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| 機構: | Nanyang Technological University |
| 語言: | English |
| 總結: | By treating the inductive coupling probes and the
electrical system to be monitored as three cascaded two-port
ABCD networks, the in-circuit impedance of the electrical system
can be extracted with ease. The proposed method simplifies the
setup calibration and allows real-time impedance monitoring of
critical electrical system to be implemented without interrupting
its normal operating conditions. In this paper, the theory
behind the proposed ABCD networks approach is described. The
proposed approach has overcome the poor measurement accuracy
of the conventional inductive coupling calibration method
above 30 MHz and has achieved good accuracy up to 100 MHz
with a maximum measurement deviation of 3.6%. Finally, using
a dc-powered motor as a practical example, the ability to detect
the change of in-circuit impedance of the motor under different
operating conditions is demonstrated. |
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