Abstract
With the extensive use of converters in high-power ventilator, shearer, road header, conveyor, hoist, and other coal mine equipment, the electromagnetic disturbance problem of the converter is worthy of attention. In this paper, the field measurement and statistical method are used to analyze the radiation interference characteristics of frequency converter. Then, a typical fan converter is taken as an example, and the electromagnetic disturbance of the converter is tested in four key positions and two working frequencies, respectively. Multiple sets of data and spectrum are obtained by using a spectrum analyzer and other instruments, and the dominant frequency characteristic parameters of the converter are analyzed emphatically. The small sample data adopts the Shapiro–Wilk test, and the 80%/80% rule was used for statistical analysis. Finally, we got five common frequencies of electromagnetic interference generated by the converter (electric field dBμV/m). The CH4 sensor and other sensors work near these five dominant frequencies, which may affect the normal operation of the sensor and cause alarm. The test and analysis method proposed in this paper can be used to obtain the characteristic parameters of the converter electromagnetic disturbance, which can be used as a reference for the design of the immunity of sensors or control instruments.
Highlights
In recent years, the improvement of the technology of coal mine equipment makes the electrical equipment develop towards diversification, large scale, high voltage, and high power [1]
Converters and other nonlinear electrical equipment are widely used in high-power ventilator, shearer, road header, conveyor, hoist, and other electrical equipment. ese high-power pieces of equipment may produce many types of electromagnetic disturbance. e electromagnetic disturbance is aggravated by the dense distribution of various metal pipelines in the narrow closed space such as underground roadway, and the electromagnetic environment of underground working space becomes more complex [2]. e electromagnetic environment in coal mine has become a key research problem
It is difficult to predict and analyze the electromagnetic environment by digital simulation. erefore, it is a better choice to analyze the electromagnetic environment in coal mines through statistical analysis of measured data [14, 15]. is paper refers to the statistical method of electromagnetic disturbance data in substations and analyzes the electromagnetic disturbance caused by many high-voltage and high-power equipment in coal mines
Summary
Zhonghua Xin ,1,2 Xiaodong Zhang ,1,3 Shuqian Yu ,1 Huijuan Wang ,1 Xiaoqian Jia ,1 and Yuling Ma 3. The field measurement and statistical method are used to analyze the radiation interference characteristics of frequency converter. En, a typical fan converter is taken as an example, and the electromagnetic disturbance of the converter is tested in four key positions and two working frequencies, respectively. Multiple sets of data and spectrum are obtained by using a spectrum analyzer and other instruments, and the dominant frequency characteristic parameters of the converter are analyzed emphatically. We got five common frequencies of electromagnetic interference generated by the converter (electric field dBμV/m). E test and analysis method proposed in this paper can be used to obtain the characteristic parameters of the converter electromagnetic disturbance, which can be used as a reference for the design of the immunity of sensors or control instruments We got five common frequencies of electromagnetic interference generated by the converter (electric field dBμV/m). e CH4 sensor and other sensors work near these five dominant frequencies, which may affect the normal operation of the sensor and cause alarm. e test and analysis method proposed in this paper can be used to obtain the characteristic parameters of the converter electromagnetic disturbance, which can be used as a reference for the design of the immunity of sensors or control instruments
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
