Research on Control Strategy of SCESS-DFIG Grid-side Converter Based on Power-Energy Balance

Long Haotian; Sun Dongyang; Sun Li

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Research on Control Strategy of SCESS-DFIG Grid-side Converter Based on Power-Energy Balance

Long Haotian 1,Sun Dongyang 2,Sun Li 3 *

1.School of Electrical Engineering & Automation Harbin Institute of Technology, Harbin, China, 150001

2.;Engineering Research Center of Automotive Electronics Drive Control and System Integration，Ministry of Education, Harbin University of Science and Technology, Harbin,150080

3.School of Electrical Engineering & Automation Harbin Institute of Technology, Harbin, China,150001

*Correspondence author

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Funding: none

Opened online:23 April 2020

Accepted by: none

Citation: Long Haotian,Sun Dongyang,Sun Li.Research on Control Strategy of SCESS-DFIG Grid-side Converter Based on Power-Energy Balance[OL]. [23 April 2020] http://en.paper.edu.cn/en_releasepaper/content/4751504

In this paper, the problem of DC bus capacitance voltage fluctuation caused by multiple converters is studied. The main function of super capacitor energy storage device and DC-DC converter is to provide inertia response power, and its power characteristic is step load. Due to changes in the DC load characteristics of the gird side converter, the balance and stability of the original system will also change. Because the complex topology and system composition of wind storage integrated doubly fed wind turbine, the conventional control strategy can not be used to improve the dynamic response speed. Therefore, this paper designs a control strategy which is suitable for the rapid recovery of DC bus capacitance voltage of wind storage integrated doubly fed wind turbine. The theory proposed in this paper is verified by simulation model and experiment.

Keywords:motors and appliances;super capacitance; doubly fed wind turbine; ADRC

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