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HAO Liangshou,XIA Kepeng,CHEN Xiaoping,JIANG Hai,ZHU Qi,WANG Di
Abstract: The conventional grid voltage observation methods of flexible DC power converters need to designmultiple observers,and use multiple filters,which are also affected by DC-offset. So,a grid voltage observationmethod of flexible DC power converters based on single sliding mode observer and single third-order ...
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Number of views:958 Amount of downloads:891
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DONG Yue,HE Yingfei,DU Lulu,TANG Mingjie,JIN Guangchao,ZHAO Jing
Abstract:Modular multi-level matrix converter(M3C)is a kind of new topology which can convert onespecified electric frequency to another directly,it is applicable to high voltage and large capacity scene. In thefractional transmission system,the complete flow was introduced to achieve power frequency grid fault ride...
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Number of views:853 Amount of downloads:881
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LIU Detao
Abstract: Due to the inaccurate power deviation and network loss results obtained by the energy storage powercontrol of the multi-source distribution network,the power control results are not ideal. A rational control method of energy storage power in multi-source distribution network based on ant colony algorithm w...
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Number of views:815 Amount of downloads:881
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WU Zhiheng,LIU Aimin
Abstract: The motor actuator used in circuit breaker has the advantages of simple structure,small dispersal ofaction and strong controllability,which provides the possibility for the switch contact of circuit breaker to followthe preset reference curve. The traditional control method can not adjust the parameters ac...
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Number of views:1159 Amount of downloads:880
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YANG Fan,WANG Huanmin
Abstract:With the development of power electronics technology,microgrid type energy storage inverters withvirtual synchronous generator(VSG)function have also been widely used. In VSG technology,due to the presenceof inertial frequency regulation loop and voltage regulation loop,the inverter can realize the grid fre...
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Number of views:1225 Amount of downloads:874
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LIU Dong
Abstract: Focus on the stator winding insulation and voltage oscillation of variable frequency motor,thetransition process of the pulse voltage output by the frequency converter in the transmission path of stator windings,frequency conversion cables,reactors,etc was analyzed,the voltage equivalent mathematical model...
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Number of views:924 Amount of downloads:874
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LÜ Jin,XU Li,SUI Dawei,GAO Qixin,XU Deshu
Abstract: With the rapid development of China's industrial economy,the demand for strip materials isincreasing,and the construction of strip production lines both domestically and internationally is growing year byyear. However,the complexity of large-scale rolling mill systems and the harsh working environment ...
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Number of views:871 Amount of downloads:870
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ZHANG Xudong,WANG Yangyang,LI Xiaolong,LÜ Jin
Abstract:Aiming at the problem that the ripple content of current and voltage in cycloconverter speed controlsystem is large and the ripple period is time-varying,the real-time sampling value is not suited for feeding back tothe speed control system directly,a variable period mean sampling algorithm was proposed. Fi...
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Number of views:801 Amount of downloads:862
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CHEN Kun,SUN Kaiyuan,LIN Lin,WANG Meng,ZHENG Jiehui,LI Zhigang
Abstract: With the massive access of renewable energy sources and pluralistic load,it is bi-directionalbeneficial to update the distribution network topology. It can not only promote the consumption of renewableenergy and the satisfaction of new load demands,but also improve the rationality of urban distribution net...
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Number of views:1022 Amount of downloads:854
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LIU Zhijian,ZI Chao,LI Pengcheng,GUO Cheng,LIU Jie,HUANG Wei
Abstract: Aiming at ultra-low frequency oscillation in power system caused by hydraulic turbine governingsystem,an additional damping control strategy for governing side was developed. Firstly,according to the damping torque method,the negative damping generated by the hydraulic turbine governing system was regarded...
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Number of views:1020 Amount of downloads:850
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FU Chen,FEI Fei,WANG Jianjun,GUO Mingxing,LIN Shunfu,ZHANG Qi
Abstract:Making full use of the regulation of flexible resources can effectively suppress the fluctuation ofrenewable energy generation and ensure the economic and safe operation of power system. An optimal dispatchingmethod for power system considering the flexibility of battery energy storage systems(BESS)and pump...
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Number of views:1089 Amount of downloads:847
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YIN Qiyun,YANG Chen,LU Hongjian,ZHAO Xinyang,AN Yanjie,CHEN Haoyang
Abstract: Aiming at clarifying the interference effect of 5G electromagnetic radiation on relay protection andcommunication control equipment in converter station,a microstrip antenna simulation model with a centerfrequency of 3.5 GHz was established. Firstly,the propagation and attenuation law of electromagnetic ra...
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Number of views:871 Amount of downloads:841
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LI Yajun,HE Shan,HU Bing,XIE Shaohua
Abstract:Aiming at the problems of high investment cost,low efficiency of electrolyzer operation and highfluctuation of power input in the new energy electrolytic water to hydrogen microgrid system,the scenery hydrogen production capacity configuration scheme with the installation cost of microgrid equipment and the...
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Number of views:751 Amount of downloads:835
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LIANG Zhen,WANG Yong,BAI Haibin,ZHANG Zhiyu,SUN Qianhao,CUI Bin
Abstract: Based on full-bridge(FB)and half-bridge(HB)sub-modules(SMs),the conventional hybridmodular multievel converter(MMC)is a typical topology of MMC with DC fault clearing ability. However,theproportion of FB SMs in conventional hybrid MMC is usually greater than 50%,so as to increase the cost andlosses. To sol...
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Number of views:767 Amount of downloads:834
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JING Qi,WANG Changkai,XU Fengxia,YU Liqi
Abstract: In high-precision applications,the control accuracy of the servo system is extremely high required.The control precision of the servo system depends largely on the precision of the feedback measurement. Positionand speed feedback accuracy can be improved by increasing the absolute accuracy of the encoder,a...
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Number of views:1061 Amount of downloads:832