The Optimization Design of Sound Arrester for the Dry Type Air Core Smoothing Reactor Based on the Multi‐Physical Field Coupling Method

2021 ◽  
Author(s):  
Fating Yuan ◽  
Shouwei Yang ◽  
Shihong Qin ◽  
Bo Tang ◽  
Kai Lv ◽  
...  
Keyword(s):  
Optimization Design ◽  
Physical Field ◽  
Coupling Method ◽  
Field Coupling ◽  
Air Core

scholarly journals Optimization design of color mixing nozzle based on multi physical field coupling

2019 ◽  
Vol 233 ◽  
pp. 032004
Author(s):  
Yankai Chen ◽  
Tingchun Shi ◽  
Liangliang Lu ◽  
Xiuyan Yue ◽  
Jianhui Zhang
Keyword(s):  
Optimization Design ◽  
Physical Field ◽  
Field Coupling ◽  
Color Mixing

scholarly journals Thermal and Electromagnetic Combined Optimization Design of Dry Type Air Core Reactor

Energies ◽  
2017 ◽  
Vol 10 (12) ◽  
pp. 1989 ◽  
Author(s):  
Fating Yuan ◽  
Zhao Yuan ◽  
Lixue Chen ◽  
Yong Wang ◽  
Junxiang Liu ◽  
...  
Keyword(s):  
Optimization Design ◽  
Air Core

scholarly journals Noise Optimization Design of Frequency-Domain Air-Core Sensor Based on Capacitor Tuning Technology

Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 194
Author(s):  
Shengbao Yu ◽  
Yiming Wei ◽  
Jialin Zhang ◽  
Shilong Wang
Keyword(s):  
Frequency Domain ◽  
Optimization Design ◽  
Signal To Noise Ratio ◽  
Experimental Tests ◽  
Impedance Analysis ◽  
Physical Structure ◽  
Normal Operation ◽  
Amplifier Circuit ◽  
Noise Current ◽  
Air Core

In the semi-aviation frequency-domain electromagnetic measurement, the induction air-core coil and the differential pre-amplifier circuit introduce noise, which affects the sensor and results in receiving weak signals and improving the signal-to-noise ratio of the system. In response to this problem, by analyzing the physical structure of the air-core coil sensor and the mechanism of the amplification circuit, combined with the simulation and experimental tests of voltage noise, current noise, resistance noise and other noise components, analyzed that the thermal noise is the main component of the sensor noise in the system frequency band, but directly removing the matching resistor increases the instability of the circuit, causes the coil to work in an underdamped state, and generates a time domain oscillation at the resonant frequency, source impedance analysis and analysis of differential pre-amplifier circuit in the frequency-domain detection method, abandoning the matching resistance scheme and magnetic flux negative feedback scheme. The matching capacitor is added to make the receiver detect the frequency range in the 1–10 kHz range. In normal operation, the noise level reaches 10 nV level, which not only increases the stability of the circuit, but also reduces the noise of the sensor. It has far-reaching significance for the detection of weak frequency signals.

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