A Rogowski Coil Current Transducer Designed for Wide Bandwidth Current Pulse Measurement
In this paper, high frequency behavior for a Rogowski coil is analyzed. Considering the coil frequency response model, a design method for this transducer is presented that the damping ratio based on termination resistor divides the coil frequency band into three bands: derivation band, proportion band and resonance band. Corresponding outside integrator circuits are built according with every band characteristic. A novel compound integration circuit is described in this paper which is consisted of self-integration, passive RC integration and active RC integration. This compound integrator improvements the measurement upper bandwidth limit of transducer above coil natural frequency. A coil of 100 wound number is constructed using compound integrator which is designed under 50Hz~2.8MHz and sensitivity of 1mV/A. Simulation and experiment waveforms verify the transducer operates with both 50Hz grid current and 750A/us di/dt pulse current measurement.
Baocheng Wang Deyu Wang Weiyang Wu
Key Lab of Power Electronics for Energy Conservation and Motor Drive of Hebei Province,Department of Power Electronics,Institution of Electrical Engineering,Yanshan University,China
国际会议
武汉
英文
1-4
2009-05-17（万方平台首次上网日期，不代表论文的发表时间）