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| 1 | A Novel Hybrid Seven-Level Converter for Permanent Magnet Synchronous Motor Driving System Based on Model Predictive Control显示文摘A novel hybrid three-phase seven-level converter is proposed in the paper.Each phase consists of a four-level bridge and a two-level H bridge,which contains ten switching devices and a floating capacitor.The circuit structure is introduced and working principle of the converter containing 14 commutation paths is analyzed,which is easy to control the floating capacitor voltage.In order to drive permanent magnet synchronous motor(PMSM)with the proposed converter,model predictive control(MPC)strategy is adopted.The control objectives such as controlling the currents of PMSM and capacitor voltages balancing are included in a cost function with two weight factors,which can control the currents of PMSM and balance the capacitor voltages simultaneously.To validate the proposed control scheme,simulations in two cases are carried out by using Matlab/Simulink software.Finally,the feasibility and efficiency in two cases are verified with the experimental test bench based on RT_LAB. | Yuansheng Hu Cungang Hu Pinjia Zhang Yunlei Zhang | 2019 | CES Transactions on Electrical Machines and Systems2019，3，4： | 6 |
| 2 | Predictive Current Control for Voltage Source Inverters Considering Dead-Time Effect显示文摘This paper proposes a new concept of synthesized voltage vector to address dead-time effect issue for Finite Control Set Model Predictive Control(FCS-MPC)technique.For a voltage source inverter(VSI),dead-time is inevitably inserted between the turn off and turn on instants of power devices to avoid short circuit phenomenon.The influence of dead-time leads to output voltage vector error of three-phase inverters.Furthermore,it will result in computing deviation in cost function,and will deteriorate the performance of the system if not properly dealt with.In this paper,the problem is clearly analyzed,and the solution to this issue is proposed by introducing a synthesized voltage vector.The proposed solution is verified by Hardware-in-the-loop(HiL)test in real time,and results validate the effectiveness of the proposed solution. | Yu Li Zhenbin Zhang Kejun Li Pinjia Zhang Feng Gao | 2020 | CES Transactions on Electrical Machines and Systems2020，4，1： | 3 |
| 3 | Improving Thermal Recovery Time for Soft-starter-connected AC Motors with Intermittent Periodic Duty Cycles显示文摘 | Zhang Pinjia Du Yi Habetler Thomas G | 2010 | IEEE Transactions on Applications2010，46，5： | 1 |
| 4 | Molecularly imprinted photonic hydrogels for fast screening of atropine in biological samples with high sensitivity显示文摘 | Liang Meng Pinjia Meng Bugang Tang Qingqing Zhang Yanji Wang | 2013 | Forensic Science International (-)2013，，1： | 1 |
| 5 | A remote and sensorlessstator winding resistance estimation method for thermal protectionof soft-starter-connected induction machines显示文摘 | ZHANG Pinjia LU Bin HABETLER T G | 2008 | IEEE Transactionson Industrial Electronics2008，55，10： | 1 |
| 6 | Open Ecosystem for Future Industrial Internet of Things (IIoT): Architecture and Application显示文摘Advanced sensing,data analysis and communication techniques have led to the emergence and tremendous develop-ment of industrial internet of things(IIoT)in recent years,which raises revolution in condition monitoring and maintenance for electrical assets.An open ecosystem for future IIoT is proposed in this paper and the architecture of the open ecosystem is discussed.An open development environment needs to be established for users to interact with power devices and servers freely via web or mobile applications installed on user terminals,increasing IIoT scalability and flexibility.The core technologies of open ecosystem in future IIoT are discussed,which include comprehensive sensing techniques,wide-area communication tools,Big Data service infrastructure,data analysis algorithms and intelligent maintenance schemes.An application of future IIoT ecosystem in wind farm maintenance is then presented.It is demonstrated that the efficiency and effectiveness of wind farm maintenance can be improved with the support of open ecosystem of future IIoT,providing an innovative insight for electrical assets monitoring and maintenance with high reliability. | Pinjia Zhang Yang Wu Hongdong Zhu | 2020 | CSEE Journal of Power and Energy Systems2020，6，1： | 1 |
| 7 | Fast screening of ketamine in biological samples based on mo- lecularly imprinted photonic hydrogels 显示文摘 | Meng Liang Meng Pinjia Zhang Qingqing | 2013 | Analytica Chimiea Acta2013，771，： | 1 |
| 8 | The allocation between egg size and clutch size depends on local nest survival rate in a mean of bet-hedging in a shorebird显示文摘Background:The allocation of resources between offspring size and number is a central question of life-history theory.Although several studies have tested the existence of this trade-off,few studies have investigated how environmental variation influences the allocation of resources to offspring size and offspring number.Additionally,the relationship between population dynamics and the offspring size and number allocation is far less understood.Methods:We investigate whether resource allocation between egg size and clutch size is influenced by the ambient temperature and whether it may be related to apparent nest survival rate.We measured 1548 eggs from 541 nests of two closely related shorebird species,the Kentish Plover(Charadrius alexandrinus)and the White-faced Plover(C.dealbatus)in China,in four populations that exhibit contrasting ambient environments.We weighed females,monitored nest survival,and calculated the variance of ambient temperature.Results:Although we found that egg size and clutch size were all different between the four breeding populations,the reproductive investment(i.e.total clutch volume)was similar between populations.We also found that populations with a high survival rate had relatively larger eggs and a smaller clutch than populations with a low nest survival rate.The latter result is in line with a conservative/diversified bet-hedging strategy.Conclusions:Our findings suggest that plovers may increasing fitness by investing fewer,larger or many,small according local nest survival rate to make a similar investment in reproduction,and thereby may have an impact on population demography. | Zitan Song Xin Lin Pinjia Que Naerhulan Halimubieke Qin Huang Zhengwang Zhang Tamás Székely Yang Liu | 2020 | Avian Research2020，11，4： | 1 |
| 9 | A survey of condi- tion monitoring and protection methods for medium-voltage in- duction motors显示文摘 | Pinjia Zhang Yi Du Habetler T G | 2011 | IEEE Transactions on Industry Applica- tions2011，47，1： | 1 |
| 10 | Message from Editors显示文摘THE More Electric Aircraft(MEA)/All Electric Aircraft(AEA)system is being widely recognized as the future for the aerospace industry to meet the power demands of increasing electric loads,reduce aircraft emissions,improve fuel economy,and lower the cost of the total system. | Xiaofeng Ding Hong Guo Kaushik Rajashekara Partrick Chi kwong Luk Liyi Li Bo Zhou Jinglin Liu Wenxiang Zhao Zhuoran Zhang Pinjia Zhang Xiaoyan Huang Shoujun Song Chengming Zhang Jiadan Wei | 2021 | CES Transactions on Electrical Machines and Systems2021，5，3： | 0 |
| 11 | Message from Editors显示文摘THE rapid growth of new energy vehicles is accelerating the low-carbon transition in the global transportation sector. According to the international energy agency report, more than 10 million electric vehicles(EVs) including pure electric and hybrid models were sold worldwide in 2022, which means that the global share of electric vehicles in the overall automotive market has risen from less than 5% in 2020 to 14% in 2022. | Xuhui Wen Tao Fan Dong Jiang Yinye Yang Xin Zhang Yan Xu Xinhua Guo Shuangxia Niu Chaohui Liu Yihua Hu Pinjia Zhang Zhaoshun Gao Puqi Ning | 2023 | CES Transactions on Electrical Machines and Systems2023，7，3： | 0 |
| 12 | Ultrasound-Assisted Low-Density Solvent Dispersive Liquid-Liquid Extraction for the Determination of Amphetamines in Biological Samples Using Gas Chromatography-Mass Spectrometry显示文摘In order to control drug crime effectively,it is necessary to develop selective analytical methods suitable for unambiguous identification and determination of drugs in illicit samples and biological matrices.A novel microextraction technique based on ultrasound-assisted low-density solvent dispersive liquid-liquid microextraction,(UA-LDS-DLLME)has been applied to the determination of four amphetamines(methamphetamine,amphetamine,3,4-methylenedioxymethamphetamine,and 3,4-methylenedioxyamphetamine)in urine samples by gas chromatography-mass spectrometry.The parameters affecting extraction efficiency have been investigated and optimized.UA-LDS-DLLME used ultrasound energy to assist in the emulsification process without any disperser solvent.Under the optimized conditions,linearity was observed for all analytes in the 0.15-10 p,g/mL range with correlation coefficients(R)ranging from 0.9886 to 0.9894.The recoveries of75.6-91.4%with relative standard deviations of 2.5-4.0%were obtained.The limits of detection(S/N=3)were estimated to be in the 5-10 ng/mL range.The UA-LDS-DLLME technique had the advantages of shorter extraction time,suitability for simultaneous pretreatments of batches of samples,and the higher extraction efficiency.It was successfully applied to the analysis of amphetamines in real human urine samples. | Liang Meng Wenwen Zhang Pinjia Meng Yuxian Liu | 2015 | Journal of Forensic Science and Medicine2015，1，2： | 0 |
| 13 | Analysis of clinical efficacy of P-Gemox regimen sandwich radiotherapy,P-Gemox regimen sequential radiotherapy,and radiotherapy alone treatment for extranodal natural killer/T-cell lymphoma显示文摘Objective The study aimed to explore the clinical efficacy of P-Gemox regimen sandwich radiotherapy, P-Gemox regimen sequential radiotherapy, and radiotherapy alone in early-stage extranodal natural killer/T-cell lymphoma(ENKTL).Methods In total, 124 patients with early-stage ENKTL, from June 2009 to January 2016, were retrospectively analyzed to compare the clinical efficacy of the three regimens. Results A total of 46 patients were treated with P-Gemox regimen sandwich radiotherapy, with complete remission(CR) of 91.3%, objective response rate(ORR) of 97.8%, 2-year progression-free survival(PFS) of 76.1%, and 2-year overall survival(OS) of 80.4%. Then, 37 patients received P-Gemox regimen sequential radiotherapy, with CR of 86.5%, ORR of 94.6%, 2-year PFS of 75.7%, and 2-year OS of 81.1%. Finally, 41 patients received radiotherapy alone, with CR of 61.0%, ORR of 80.5%, 2-year PFS of 51.2%, and 2-year OS of 65.9%. When the two groups were compared, significant differences in CR, PFS, and OS were observed among the sandwich radiotherapy, sequential radiotherapy, and radiotherapy alone groups(P < 0.05), respectively. However, no significant difference in CR, ORR, PFS, and OS was observed between the sandwich radiotherapy and sequential radiotherapy groups(P > 0.05). Multivariate analysis revealed that Eastern Cooperative Oncology Group(ECOG), serum lactate dehydrogenase(LDH), plateletto-lymphocyte ratio(PLR), local tumor invasion, and treatment modalities were independent prognostic factors for PFS(P < 0.05). ECOG, LDH, PLR, local tumor invasion, underlying disease, and treatment modalities were independent prognostic factors for OS(P < 0.05).Conclusion P-Gemox regimen combination radiotherapy for patients with early-stage ENKTL was better than the radiotherapy alone. | Xiaoying Quan Pinjia Wang Lei Lei Xiaoyan Chen Chunzhi Wu Bin Ye Zhihui Zhang | 2018 | Oncology and Translational Medicine2018，4，5： | 0 |
| 14 | Message from Editors显示文摘IN recent years,4th Industrial Revolution and Industry 4.0 have swept the world and deeply influenced the development of global industry market.This movement arises wide attention to electric motor drive system which is playing an increasing important role in energy consumption transformation and environment protection.Amid this tremendous change in industry field,the concept of high-efficient,energy-saving and intelligent motor system has been proposed.On one hand,motor system with advantages such as low vibration,low noise,weak magnetic interference,renewable utilization capacity,high-efficiency and high-reliability could promote the progress of major industries such as mining,renewable energy and cutting-edged equipment manufacturing.On the other hand,the realization of intelligent and automated operations of motor drive system would help boosting the automation of industrial production. | Ronghai Qu Shoudao Huang Jianxin Shen Fengge Zhang Xiuhe Wang Metin Aydin Xiaoyong Zhu Yongxiang Xu Zhuoran Zhang Gaolin Wang Pinjia Zhang Hong Li Dawei Li | 2021 | CES Transactions on Electrical Machines and Systems2021，5，4： | 0 |
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