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PANG Lin,LU Xin,WU Zhanxia,WANG Xueliang,FU Meiming,ZHANG Hongming
Abstract: Traditional virtual synchronous generator(VSG)is a primary frequency regulation technique. Afterload power changes,the frequency of microgrid cannot return to the rated level,influencing the safety of the microgrid in a severe condition. In order to avoid steady-state errors under large load fluctuations,a...
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Number of views:3393 Amount of downloads:1322
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LIU Mengmeng,LI Ruifang,MIAO Weili
Abstract: In order to optimize the controller structure of the permanent magnet synchronous motor(PMSM),a simplified speed control strategy for the PMSM based on genetic algorithm(GA)was proposed.The new controller mainly includes a direct voltage controller,which uses the motor model to achieve accurate speed track...
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Number of views:3386 Amount of downloads:1369
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RONG Zhenshuai,CHI Yingchao,SUN Zhan,WANG Yijie,XU Dianguo
Abstract: The arrival of the 5G era has put forward higher requirements for the power system,that is,theconverter is required to have high efficiency,high power density,and rapid dynamic response. In response to thisproblem,the third generation of wide bandgap semiconductor device gallium nitride(GaN)transistors was...
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Number of views:3352 Amount of downloads:1674
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NIU Qian,ZHANG Dong,WANG Junlong
Abstract: Aiming at the problems of uneven power distribution and poor stability of grid AC/DC microgrid,anew adaptive coordinated control strategy was proposed to improve the stability and power distribution accuracy ofAC/DC microgrid(MGs)system.First,for converters connectingAC microgrids and DC microgrids,a contr...
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Number of views:3337 Amount of downloads:1287
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LING Chunyang,LIU Fang,LI Hao,ZHAO Yang
Abstract: SiC MOSFET devices have the characteristics of high switching frequency,low loss,and hightemperature resistance,which can significantly improve the power density and efficiency when used in wirelesscharging. However,in the control of the wireless charging converter,hard turn-on and hard turn-off are easy t...
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Number of views:3323 Amount of downloads:1565
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ZHOU Jiabin,CHEN Yufe,GU Zhaoliang,YONG Jun,ZHAO Wenbin,JIANG Pengliang
Abstract: The influence of magnetic bias current on the excitation characteristics of near-field transformers inthe DC grounding electrode from bipolar to unipolar earth mode was discussed. Based on the principle of field-circuit coupling,the DC magnetic bias co-simulation model of transformer was established and an...
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Number of views:3317 Amount of downloads:1352
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GONG Ruibang,JIANG Qi,WANG Yuchen,ZHANG Baoqing
Abstract: A novel voltage regulation and maximum power point tracking(MPPT)control for DC microgridcomposed of PV panel,battery,constant resistance and constant power loads was proposed. A dynamic model of the DC microgrid system described by a multi-input and multi-output nonlinear system with non-affine inputs was...
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Number of views:3314 Amount of downloads:1385
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ZHANG Lantao,XIONG Jun,NIU Xiaonan,HUANG Xiaoyu
Abstract: Aiming at the reliability problem of high-power IGBT modules under short circuit extreme operatingconditions,the power terminals imbalanced current of IGBT modules and the resulting dynamic junctiontemperature change were comprehensively analyzed. Firstly,the current sharing characteristics of parallel ter...
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Number of views:3312 Amount of downloads:1236
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ZHAO Jianyong,LI Han,WU Min,MA Runsheng,ZHAO Wenqiang,YU Ziwei
Abstract: Firstly,the significance of impedance modeling for new energy power generation equipment wasanalyzed,and the existing impedance modeling methods were explained. Aiming at the problems of low flexiblematching degree,single disturbance signal,fixed disturbance frequency and the inability of real-time measure...
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Number of views:3304 Amount of downloads:1459
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FU Xuhui,FANG Chun'en,XUE Tao,HUANG Leichao,CHEN Junping
Abstract: In order to ensure that the thyristor valve body can be accurately conducted during the solid state switch switching,a solid state switch trigger control unit was designed. Firstly,the structure and working principle of the solid state switch and the structure and function of the trigger control unit were ...
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Number of views:3290 Amount of downloads:1307
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ZHAO Chaokun,YAN Tao,ZHOU Jiachao,YUAN Zhanwei,MENG Pu
Abstract: The AMK servo control system is widely used in cigarette machine equipment like German Protos-M5 and local product ZJ116. But its failure parts repaired could not be guaranteed to operate safely and reliably. Ifthose parts are replaced frequently,the efficiency of the equipment will be seriously impact. To...
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Number of views:3275 Amount of downloads:1351
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LIU Xiaodong,SUN Lunan,LIU Yawei,GUAN Peng,RONG Xifeng
Abstract: In order to meet the needs of the testing laboratory's task scheduling and process design functions,the new applications were developed based on the existing laboratory information management system,such asscheduling system and process designer. According to the type and priority of the test task,the t...
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Number of views:3260 Amount of downloads:1248
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SUN Lihua,ZHANG Lin,SUN Huiqin,GUO Yingjun,LI Zheng,GUO Tianliang
Abstract: The switched reluctance motor control system for electric vehicles includes motor drive and batterycharging circuit,which reduces system integration and power density. Based on the asymmetric half-bridge powerconverter of switched reluctance motor,an integrated power converter for electric vehicle was desi...
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Number of views:3250 Amount of downloads:1333
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SHI Zhibo,MENG Jie,HAN Yong,LI Xueping
Abstract: Due to the application of a large number of power electronic equipments on the aircraft,the aircraftpower supply network tends to be complicated,and thus there is an urgent need to effectively evaluate the powerquality of the power supply network. In order to evaluate AC power quality of aircraft,a compreh...
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Number of views:3246 Amount of downloads:1292
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FU Wenqi,HUANG Yongzhang,YANG Xin,GUAN Fei,GU Yujun
Abstract: The integration of large-scale renewable energy source causes the reduction of rotational inertia inpower systems. A motor-generator pair(MGP)can provide a real inertial response(IR)capability without delay forrenewable energy generations. The electrical-mechanical model of the MGP was established based on...
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Number of views:3246 Amount of downloads:1375