1Simulation Study of Overvoltage at Inverter Based on MatlabGAO Yan, DAI Peng, WANG Chao1-3,72Design the Power Ground Wire Based on GSMZHANG Li-Jun, LI Chun-Yang4-73Simulation of BLDCM Control System of Single Neuron Self-Adaptive PIDKANG Hai-yang, YANG Feng, CHANG Yun-ze, ZHANG Cheng-fa, Wang Jian-wei8-104Design of Video Remote Control for RoadheaderSUN Gui-ting11-13,245The Electric Load Monitor System Based on Embedded EthernetZHANG Chuan-shu, XIA Yuan-tao, WANG Xiao-chen, WANG Yu-feng14-186Study on Harmonics Impendence of Four Cores Architecture Low Voltage Power Distribution CableGAO Zi-yu, ZHANG Zhan, AI Yong-le18-217High-voltage Leakage Protection Study Based on Relative Energy of Wavelet Packet DecompositionYU De-fang, ZHANG He21-248Research on the Implement and Improvement of the Performance of Protection for 110 kV Line in Ventilating Shaft AreaXU Min25-27,359Research on the AC-AC Variable Frequency Characteristics Base on MatlabYANG Lu, CHEN Wei28-3110Development of Full-mechanized Top-coal-drawing Complex for Super-thick SeamLIU Da-tong31-3511Study on the Off with Load of Distribution Network Based on Vacuum Circuit BreakerYIN Pei-feng, FU Ji-jun36-38,4112Design and Realization of Shearer Tester Monitoring System Based on Visual BasicZHU Cheng-cai, ZHANG Hai-zhi39-4113Study of Mathematic Model of Synchronous Motor with Saturation EffectREN Ju-yong42-44,4714Finite Element Analysis of Blade Wheel in Dual-chamber Hydraulic CouplingZHAO Mei, NIE Wen-ke, GUO Zhong45-4715Technology Status and Development Trend of Shearer for Difficult Mining Coal SeamLIU Peng, ZHAO You-jun48-5016Analysis of Selection and Corollary of Thin Seam Mining EquipmentLI Jian-min, SUN Ji-kai, ZHANG Zi-yan50-5317Analyze the Choice of Ground 660 V Power System Transformer Neutral Point Operation ModeYANG Feng-wei54-5718Application of Optimization and Save Energy Control Technology of Multi-level Mine Drainage in Qianjiaying Coal MineMENG Xian-jing, LI Ke-qing57-5919Simulation Analysis of the Arc Suppression Coil Grounding System Based on PSCADHOU Yu-qiang, GAO Yan-cheng, ZHANG Xiao60-6420Realization of Voice Communication System at Coal MineSONG Shi-xian, LI Jian, WANG Yu-feng, ZHANG Zhen-hai64-67 