Design of Additional Low-frequency Signal Source for Online Measurement of Insulation Parameters of Coal Mine Cable

LOU Jian-hua; LI Pan; WANG Jie; GUO Qi

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Article Navigation > Journal of Mine Automation > 2012 > 38(10): 51-54

LOU Jian-hua, LI Pan, WANG Jie, et al. Design of Additional Low-frequency Signal Source for Online Measurement of Insulation Parameters of Coal Mine Cable[J]. Industry and Mine Automation, 2012, 38(10): 51-54.

Citation:

LOU Jian-hua, LI Pan, WANG Jie, et al. Design of Additional Low-frequency Signal Source for Online Measurement of Insulation Parameters of Coal Mine Cable[J]. Industry and Mine Automation, 2012, 38(10): 51-54.

Citation:

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Design of Additional Low-frequency Signal Source for Online Measurement of Insulation Parameters of Coal Mine Cable

LOU Jian-hua¹,
LI Pan¹,
WANG Jie²,
GUO Qi^{1, 3}

1.
School of Electrical and Control Engineering of Xi''an University of Science and Technology, Xi''an 710054, China. 2.School of Mechanical Engineering of Xi''an University of Science and Technology, Xi''

Publish Date: 2012-10-10

Abstract

Abstract

The paper analyzed basic principle of measuring insulation parameters of cable by additional low-frequency signal source, and detailedly introduced design of optimal SPWM driving circuit, protection circuit of input and output and RS232 communication circuit of the signal source, in which the optimal SPWM driving circuit can output -8 V to +12 V voltage to ensure reliable opening and closing of IGBT. The experiment result showed that the signal source has stable output voltage and adjustable frequency.
- insulation parameter of cable, online measurement, additional low-frequency signal source, SPWM driving circuit, IGBT, TMS320F2812,