Using a Current Shunt for the Purpose of High-Current Pulse Measurement

Sensors

Andrzej Waindok¹  Pawel Piekielny¹ 

[1] Department of Electrical Engineering and Mechatronics, Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, PL-45758 Opole, Poland;

关键词: high-current pulses;    current measurement;    high-current shunts;    circuit modeling;    Rogowski coil;    electrodynamic accelerators;   

DOI  :  10.3390/s21051835

来源: DOAJ

【 摘 要 】

Measurement of high-current pulses is crucial in some special applications, e.g., electrodynamic accelerators (EA) and converters. In such cases, the current shunts have limitations concerning the frequency bandwidth. To overcome the problem, a method based on the shunt mathematical model is proposed. In the method, the solution of ordinary differential equations for the RL circuit is carried out in order to obtain the real current shape. To check the method, as a referee, a Rogowski coil dedicated to measuring high-current pulses was used. Additionally, the measurement results were compared with the mathematical model of the tested power supply system. Measurements were made for the short power supply circuit, which allows eliminating the nonlinearity. The calculations were carried out using a circuit model. In order to obtain the parameters of the shunt (resistance and inductance), it was modeled using an ANSYS/Q3D Extractor software. Comparison of calculation and measurement results confirms the correctness of our method. In order to compare results, the normalized root mean square error (NRMSE) was used.

【 授权许可】

Unknown