Xinchun Lin

Publications (6)0 Total impact

• Conference Proceeding: An Adaptive Estimation Method for Parameters of Doubly-Fed Induction Generators (DFIG) in Wind Power Controller

  Dihua Li, Xinchun Lin, Sheng Hu, Yong Kang
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  ABSTRACT: This paper purposes an adaptive parameter estimation algorithm which is basis on the decoupled vector control modeling of DFIG. Through designing state observer and selecting a proper Lyapunov function, the parameters of DFIG can be estimated, the simulation and experiment shows the feasibility of this method.
  Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific; 05/2010
• Conference Proceeding: Investigation of the transmission line impedance effects on voltage quality and flicker emission for grid connected to wind turbines

  Xiaohu Liu, Yong Kang, K. Lee, Xinchun Lin, Chun Liu
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  ABSTRACT: This paper presents an analysis of the transmission line impedance effect of X/R ratio on voltage quality for grid connected to wind turbines. By employing power flow analysis, the causes for voltage deviation and fluctuation are discussed and the investigation is taken to address the confusions about the effect of X/R ratio. A simulation model of a MW-level fixed speed wind turbine developed in Matlab/Simulink and PLECS co-simulation environment. Conclusions are drawn through detailed simulation studies.
  Power Electronics and Motion Control Conference, 2009. IPEMC '09. IEEE 6th International; 06/2009
• Conference Proceeding: An active islanding detection method for grid-connected converters

  Fangrui Liu, Xinchun Lin, Yong Kang, Yu Zhang, Shanxu Duan
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  ABSTRACT: Islanding, detection is a mandatory function for gird-connected converters. The popular slip mode frequency shift and auto phase shift active islanding detection methods are investigated and an improved slip mode frequency shift (IM-SMS) strategy is proposed in this paper. In the proposed method, additional phase shift is introduced to help stimulating the islanding detection function and the algorithm is simplified as well. When the utility grid is disconnected, the algorithm keeps the frequency of the converter output voltage deviating until the frequency protection relay is triggered. The working principle of the method is introduced and the guidance of parameters selection is also provided. The islanding detection performance is evaluated through theoretical analysis, digital simulation and experiment. The IM-SMS method exhibits features of simplicity, easy implementation and high reliability and is expected to be an effective active islanding method.
  Industrial Electronics and Applications, 2008. ICIEA 2008. 3rd IEEE Conference on; 07/2008
• Conference Proceeding: A novel solid state fault current limiter for DC power distribution network

  Fang Luo, Jian Chen, Xinchun Lin, Yong Kang, Shanxu Duan
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  ABSTRACT: DC power distribution network is specifically used in industrial manufactures and aircraft/ship power distribution since it can provide flexible interface to various power converters with high efficiency and less conversion stage. The protection for DC power distribution system is more difficult compared with those AC systems since there's no natural zero crossing point for the current. Low shortcut impedance will cause high current rising rate, which can bring heat, arc and electrical force damage to the DC power distribution grid in a quite short time that the DC breakers hardly act. This paper proposed a solid state fault current limiter (FCL) using a combined power switch. Solid state FCL can achieve fast response to the fault current in the DC power grid, without special requirement of the cooling system. Using a combined power switch instead of single fully controlled power electronics component can reduce the steady power loss while normal working states. When fault states occurs, the power electronics control technique can strictly limits the fault current beneath a certain desired range. In that way, the fault damage can be limited. Experiment results are taken to prove this design.
  Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE; 03/2008
• Conference Proceeding: Waveform compensation of PWM inverter in UPS

  Xinchun Lin, Shangxu Duan, Yong Kang, Jian Chen
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  ABSTRACT: This paper proposes a new control scheme based on a two-layer control structure to improve both the transient and steady-state responses of a PWM inverter in UPS. The experiment results show that this control scheme can achieve both fast dynamic responses and low harmonics distortion.
  Power Electronics and Drive Systems, 2001. Proceedings., 2001 4th IEEE International Conference on; 11/2001
• Conference Proceeding: Analysis and design of the DSP-based fully digital-controlled UPS

  Xuejun Pei, Xinchun Lin, Shanxu Duan, Yong Kang, Jian Chen
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  ABSTRACT: This paper proposes a new control scheme based on two parallel controllers to improve both the steady and transient state responses of close-loop regulated pulse-width-modulated (PWM) inverter for UPS. The controller consists of the repetitive and instantaneous controllers. The repetitive controller is designed to eliminate periodic disturbance and the instantaneous controller is synthesized for transient state response improvement. Design procedure is given for synthesizing the repetitive and instantaneous controllers. The proposed control scheme has been realized using a single-chip digital signal processor (DSP) TMS320F240 from Texas instruments. A 7.5 kVA UPS has been constructed to verify the proposed control scheme. Simulation and experimental results show that the DSP-based fully digital-controlled UPS can achieve both low total harmonics distortion and good dynamic response.
  Power Electronics and Drive Systems, 2001. Proceedings., 2001 4th IEEE International Conference on; 11/2001