Electric drive and its control
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ZHU Changlin，TU Qunzhang，JIANG Chengming，WANG Shijiao
Abstract：The synchronization accuracy of a multi-motor speed synchronization system is influenced by themotor control algorithm and synchronization control strategy. In response to the shortcomings of existing controlstrategies，a mid-range deviation coupling control strategy for multi-motor speed synchronization sys...
更多Number of views：2461 Amount of downloads：8866
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WAN Shaoqi，WANG Bo，GUAN Wenqing，CHEN Jingbo，LÜ Congxin，DONG Haiying
Abstract：The traditional control of electromechanical actuator in aviation electromechanical servo systemmostly adopts two-level inverter and PID control，which can not achieve higher precision control of permanentmagnet synchronous motor. In view of the above problems and the difficulty of space vector modulation al...
更多Number of views：2159 Amount of downloads：8193
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WANG Yuning，YANG Chengshun，HUANG Xiaoning
Abstract：In response to the poor disturbance rejection performance and issues of parameter perturbation andcontrol precision in traditional control strategies for interior permanent magnet synchronous motors （IPMSM），afuzzy sliding mode control strategy based on the super-twisting disturbance observer was proposed. T...
更多Number of views：2569 Amount of downloads：9099
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ZHUYanxiang，LIN Hong
Abstract：Aiming at the problem of insufficient frequency modulation capability of direct-driven wind turbineunder traditional virtual inertia control，a control strategy of super capacitor assists direct-driven wind turbineparticipating in frequency modulation was proposed to improve the frequency stability of power ...
更多Number of views：2117 Amount of downloads：7369
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PENG Fei，TIAN Xu，LIU Fei，XU Decao，FANG Shiwen，TIAN Xu
Abstract：The integration of large-scale wind power，photovoltaic and other renewable energy resources forthe power system will greatly change the power supply characteristics，reducing the inertia of power system andthreatening the stability of transient frequency. The virtual synchronous generator（VSG）technology can ...
更多Number of views：1636 Amount of downloads：5614
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FENG Xiang，YU Yue，LI Cheng，ZHENG Wei，LIU Jianhua
Abstract：The traditional ultra high speed permanent magnet synchronous motor（PMSM）driver uses PWMequivalent sine voltage output，which leads to severe motor heating due to large harmonics，and it cannot be used in situations where the input voltage changes over a large range，such as fuel cells. To reduce the heat gene...
更多Number of views：1715 Amount of downloads：5790
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YU Jiazheng，ZHANG Zhifeng，SUN Quanzeng，ZHANG Qingyi
Abstract：Aiming at the inherent problems of large common-mode voltage and heavy computation in modelpredictive current control of the six-phase permanent magnet synchronous motor（PMSM），a model predictivecurrent control method for an open-end winding six-phase PMSM was proposed. Firstly，the neutral point of the sixph...
更多Number of views：1954 Amount of downloads：5415
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ZHOU Jinwei，DING Dawei，JIANG Xuexiang，REN Zhaoting，LI Xizhi
Abstract：Maximum torque per ampere（MTPA）control can effectively improve system efficiency throughreducing copper loss，which is suitable for air conditioning permanent magnet compressor system. However，due to the inverter non-ideal characteristics，the tracking accuracy of the optimal current vector angle decreases. T...
更多Number of views：2013 Amount of downloads：5207
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LOU Bin，HAI Ying
Abstract：Harmonic loss is one of the main causes of safety accidents in excitation transformers. If the lossvalue is too large，it can easily affect normal substation and transmission. Therefore，a method based on waveletpacket decomposition and reconstruction was proposed to calculate the additional loss of rectifica...
更多Number of views：1989 Amount of downloads：5675
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LU Guijun，JIA Pengfei，WANG Yubo，LIU Jing，YU Shouquan
Abstract： Permanent magnet synchronous motors play an important role in industrial automation，automotive，aerospace，household appliances，and other fields due to their high efficiency，high power density，good torque performance，and ease of control. However，in the field of electrical transmission，it is not onlynecessary...
更多Number of views：1941 Amount of downloads：5580
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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...
更多Number of views：2012 Amount of downloads：4271
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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...
更多Number of views：1944 Amount of downloads：4266
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LI Weiye，GONG Yifan，XU Wei，LUO Yinglu，HE Mingjie
Abstract: As a new type of compressor，linear compressor has the advantages of high efficiency，smallvolume，low noise and little vibration. However，in order to give full play to its advantages of high efficiency，it isnecessary to control the driving frequency to track its mechanical resonance frequency. According to t...
更多Number of views：1773 Amount of downloads：4278
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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...
更多Number of views：2074 Amount of downloads：3899
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CAI Weiliang，CHENG Haifeng，PAN Zhixuan，CHENG Jin，DAI Mingli
Abstract: The grid connection of doubly-fed induction generator（DFIG）leads to the reduction of systemequivalent inertia and primary frequency regulation capacity. With the increase of DFIG grid connection scale，theproblem of system frequency regulation becomes more and more serious. In view of this problem，frequency...
更多Number of views：1971 Amount of downloads：4744
