Design of an Effective Antenna for Partial Discharge Detection in Insulation Systems of Inverter-fed Motors

Partial discharge (PD) measurements under repetitive impulse voltages are critical for the qualification of inverter-fed motor insulation systems. Severe electromagnetic interference due to high frequency switching from power electronic devices can cause the traditional PD detection techniques of si...

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Bibliographic Details
Published inIEEE transactions on industrial electronics (1982) Vol. 69; no. 12; pp. 13727 - 13735
Main Authors Wang, Peng, Ma, Shijin, Akram, Shakeel, Meng, Pengfei, Castellon, Jerome, Li, Zongze, Montanari, Gian Carlo
Format Journal Article
LanguageEnglish
Published New York IEEE 01.12.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antennas
Archimedean spiral antenna
Baluns
Design optimization
Discharge
Electric potential
Electromagnetic interference
Electronic devices
Frequency ranges
Insulation
insulation system
inverter-fed motor
Inverters
Media
media superstrate
partial discharge
Partial discharges
pulsewidth modulation (PWM)
repetitive impulse voltage
sensor
Signal to noise ratio
Spiral antennas
Spirals
System effectiveness
Voltage
Voltage measurement
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Summary:Partial discharge (PD) measurements under repetitive impulse voltages are critical for the qualification of inverter-fed motor insulation systems. Severe electromagnetic interference due to high frequency switching from power electronic devices can cause the traditional PD detection techniques of sinusoidal voltage unfeasible. This article presents the design of an Archimedes spiral antenna that can work effectively for PD detection under fast rise time repetitive impulse voltages. The antenna structure is optimized by a media superstrate with a high dielectric constant over the radiant surface. Through the optimized design, both the gains of the antenna in the 0.5-1.5 GHz frequency range and the signal-to-noise ratio for PD detection are increased substantially. Modeling and experimental results prove that the gain of the antenna can reach 2.5 dB in the frequency range of 500-900 MHz and become higher than 7.0 dB in the frequency range of 900-2.0 GHz, with a voltage standing-wave ratio smaller than 1.4. This seems to be a significant achievement for PD detection under fast rise time impulse voltages.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2021.3130335