-
CHEN Ya′ai,HONG Yinan,ZHOU Jinghua,ZHAO Junwei
Abstract: Cascaded energy storage power conversion system is widely used in high voltage and large capacityoccasions,it plays a role of peak shaving and valley filling for power system,its control strategy directly affects theperformance and reliability of energy storage system. Therefore,in recent years,the research...
更多
Number of views:3836 Amount of downloads:1946
-
SONG Wenxiang,REN Hang
Abstract: Six phase inverter provides abundant voltage vector resources for dual three-phase permanentmagnet synchronous motor,which can make predictive current control more accurate. However,more voltagevectors cause the problem of too much calculation. At the same time,the harmonic current of dual three-phase motor...
更多
Number of views:3826 Amount of downloads:1772
-
CHAI Bin,SHI Lei,LIU Zhiyuan,XU Hui
Abstract: The circuit breaker of AC filter in converter station is an important part of HVDC system. Theoccurrence of internal faults will directly affect the stable operation of HVDC system. In view of the fault diagnosisof the circuit breaker for filter,an efficient online monitoring method was proposed to diagnos...
更多
Number of views:3792 Amount of downloads:2732
-
YANG Chengshun,LIU Guofu,DAI Yuchen,ZHANG Dongdong,HUANG Xiaoning
Abstract: An adaptive cooperative control strategy based on improved virtual synchronous machine(VSM)technology was used to improve the traction power supply system of urban rail transit. Firstly,the improved VSMwas used as an one-time control to make the urban rail trains have the external characteristics of synchr...
更多
Number of views:3789 Amount of downloads:2593
-
YIN Jianqiang,WU Xianming,WU Fengzhi,YANG Peihao
Abstract: The sensorless control of PMSM based on control algorithm is a research hotspot in the field ofmotor control. A PMSM sensorless control system based on low-speed pulse and high-frequency stator flux injectionwas proposed,and the traditional stator flux estimator was improved and the high-frequency signal wa...
更多
Number of views:3690 Amount of downloads:1675
-
YU Jia,Wang Xiaorong,Dai Yuesheng,LI Xuan
Abstract: With the advance of smart power grid construction,the terminal laying rate of intelligent acquisitionequipment has been greatly improved,and the demand-side terminal electrification has become an irreversible trend.In recent years,the problems of users' default power supply and private overlapped lines...
更多
Number of views:3668 Amount of downloads:1805
-
GU Zhongfan,CHENYuwei,LI Cheng′ao,ZHANG Dechun,HUANG Hai
Abstract: The 3.5 V/20 A•h lithium iron phosphate battery was taken as the research object.Aiming at the onlineestimation of its state of charge(SOC),the second-order Thevenin equivalent RC circuit model was established,and a joint SOC estimation algorithm was proposed by combining BP neural network,dynamic forgetti...
更多
Number of views:3661 Amount of downloads:2464
-
ZHANG Hannian,ZHANG Tao
Abstract: The key of stable suspension of bearingless permanent magnet synchronous motor is the closed-loopcontrol of rotor radial position displacement. Usually,the high performance suspension operation of the motor relies on displacement sensor,which destroys the robustness of the motor structure and hinders the lo...
更多
Number of views:3617 Amount of downloads:1618
-
YANG Shuying, WANG Qishuai, DONG-YE Yalan, XIE Zhen
Abstract: For interior permanent magnet synchronous motor(IPMSM) , accuracy of its discrete-time model isusually at the cost of complexity. To find out a way out of the dilemma, stator flux is chosen as the state variable,allowing its model be represented in the complex form and resulting in a concise model in appear...
更多
Number of views:3612 Amount of downloads:1591
-
CHEN Yaai,ZHAO Junwei,ZHOU Jinghua,ZHAO Xun
Abstract:Flexible substation based on AC/DC hybrid power distribution technology is a major trend for futuredistribution network development.It has attracted wide attention due to multiple functions such as itsmultiterminal interfaces for medium/low and AC/DC voltage flexible power flow control multi-modal energy inter...
更多
Number of views:3608 Amount of downloads:1489
-
CAO Xinping, YIN Zhonggang, ZHANG Yanping, ZHANG Yanqing
Abstract: Aiming at the problems of chattering and poor observation accuracy of traditional full order slidingmode observer (FSMO), a sensorless control strategy of interior permanent magnet synchronous motor (IPMSM)based on improved full order sliding mode observer was proposed. In this strategy, the quasi-sign func...
更多
Number of views:3600 Amount of downloads:1541
-
ZHENG Weijie, SUN Tianfu, LAI Yueshen, SHANG Yaceng
Abstract: Aiming at the problem that the low-speed sensorless control system of interior permanent magnetsynchronous motor (IPMSM) based on high-frequency voltage signal injection method cannot identify the initialposition of the rotor, which causes the motor to start up difficultly, a starting strategy of IPMSM was ...
更多
Number of views:3550 Amount of downloads:1445
-
ZHANG Yang,GAO Tian,LIN Weixing
Abstract: Photovoltaic inverter,charging pile,energy storage converter,wind power converter and othercommon power electronic equipment are three-phase high frequency AC/DC/DC converter,which is widely used inindustrial and civil fields. Due to the fast switching capability of three-phase high frequency converter,its...
更多
Number of views:3494 Amount of downloads:1297
-
MA Tianhui,MAWeiwei,GU Huaiguang,LIU Dong
Abstract: The modular multilevel converter(MMC)based high voltage direct current(HVDC)system(MMCHVDC)is an ideal solution for large-scale grid-connected and clustered offshore wind farms. But the interaction between the doubly fed induction generator(DFIG)and the MMC-HVDC system has a risk of subsynchronous oscillat...
更多
Number of views:3470 Amount of downloads:1354
-
XU Rui,PAN Sanbo
Abstract: Aiming at the problem that the application of multi-step model predictive control(MPC)to invertercontrol results in a doubling of the number of solutions to lead to computational difficulties,an MPC strategy basedon the improved spherical decoding algorithm was introduced. In the control strategy,the optim...
更多
Number of views:3400 Amount of downloads:1239