Maosheng Shen
Beijing Jiaotong University
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Featured researches published by Maosheng Shen.
international conference on energy and environment technology | 2009
Lei Wang; Gang Zhang; Maosheng Shen; Hengli Quan; Zhigang Liu
the application of conventional traction supply system for urban railway transportation implies huge energy waste and electrical pollution, in which the energy regenerated from the braking of vehicles cannot be feedback into AC grid. What’s more, its DC output voltage fluctuates seriously with external loads, and AC harmonics on the grid side forms electrical pollution to the outside. This paper proposes a novel traction supply system for urban rail transportation, based on a multi-paralleled structure of PWM rectifiers. Fully exerting the merits of the PWM rectifier, such as a controllable DC output characteristic, less harmonics on grid side, availability of unity power factor as well as the capability of bi-directional power flow, our novel system overcomes the defects of its conventional counterpart. Under the Phase-shift Space Vector Pulse Width Modulation (PS-SVPWM) mechanism, the equivalent switching frequency of the system can be further reduced. Another adopted mechanism in the system is balance control of the PWM rectifier modules’ loads. A subsystem for remote control and monitoring of the system is also developed with Ethernet technology and virtual instrument theory. The design has been testified with experiments on a prototype set up in lab, and related results are given in the last part of this paper.
conference on industrial electronics and applications | 2009
Maosheng Shen; Zhigang Liu; Gang Zhang; Lei Wang
To accomplish a higher departure density and velocity, the traction supply is required to generate higher power, higher power factor, and better stability with higher power conservation ratio, which makes a novel traction system with PWM rectifier the research focus in such area. Analysis of the differences between our novel supply system and a conventional one consisting of uncontrolled diode rectifiers is presented in this paper. Oriented to a traction system with the DC voltage of 1500V,the characteristics of such novel supply system based on three-level PWM rectifier is studied. Whats more, in this paper are introduced thoroughly the topology and control strategy for single three-level module in the system, as well as the control strategy for paralleled connection of such modules, all subjected to simulations and experiments.
vehicle power and propulsion conference | 2008
Xiwei Lu; Zhigang Liu; Lei Wang; Maosheng Shen
With the increase of train density and velocity of the urban rail transportation system, the main stream of the development of the traction power supply system is aiming at higher power, better power factor, better stability and the conservation of energy, making PWM rectifier a study focus in such field. Considering the traction voltage of 1500 V, this paper presents research on the characteristics of a novel traction power supply system based on three-level voltage-source PWM rectifier, featuring the topology of the novel traction power supply system, the control strategy of the three-level rectifier units as well as of their parallel modulation scheme of interleaved space vector modulation (ISVM). Based on the simulated and experimental results, is made a comparison between the performance characteristics of the traditional uncontrolled diode rectifier and the three-level voltage source PWM rectifier, summarizing their common points and differences.
Archive | 2008
Zhigang Liu; Limin Jia; Minghua Zhao; Xiwei Lu; Maosheng Shen; Gang Zhang; Wei Di; Lijun Diao; Fuqiang Mu; Lei Wang; Zhefeng Li; Wenli Lin; Ying Mei; Rongya Luo
Archive | 2010
Ying Mei; Gang Zhang; Limin Jia; Maosheng Shen; Zhigang Liu; Minghua Zhao; Rongya Luo; Wei Di; Xiwei Lu; Lijun Diao; Fuqiang Mou; Wenli Lin; Lei Wang; Zhefeng Li
Archive | 2010
Ying Mei; Rongya Luo; Gang Zhang; Limin Jia; Zhefeng Li; Zhigang Liu; Maosheng Shen; Lijun Diao; Minghua Zhao; Fuqiang Mu; Wei Di; Xiwei Lu; Lei Wang; Wenli Lin
Archive | 2008
Zhigang Liu; Wenli Lin; Lijun Diao; Zhefeng Li; Minghua Zhao; Xiwei Lu; Wei Di; Limin Jia; Fuqiang Mou; Maosheng Shen; Gang Zhang; Lei Wang; Ying Mei; Rongya Luo
Archive | 2010
Wei Di; Wenli Lin; Limin Jia; Zhigang Liu; Zhefeng Li; Gang Zhang; Lei Wang; Minghua Zhao; Maosheng Shen; Xiwei Lu; Fuqiang Mou; Ying Mei; Rongya Luo; Lijun Diao
Archive | 2010
Minghua Zhao; Lijun Diao; Zhefeng Li; Zhigang Liu; Wei Di; Xiwei Lu; Lei Wang; Wenli Lin; Limin Jia; Fuqiang Mu; Gang Zhang; Maosheng Shen; Ying Mei; Rongya Luo
Archive | 2008
Wei Di; Liu Jun; Zhigang Liu; Maosheng Shen; Jie Su; Lei Wang; Hengli Quan; Fuqiang Mou