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Research on Voltage Oriented Control Strategy of Grid-Connected Inverter of Wind Power Generation

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Abstract:

Based on the dynamic mathematical model of three-phase grid-connected inverter, two kinds of control strategies are compared, one is double closed loop control based on grid voltage orientation theory, the other is direct power control. According to the mathematical model of two-phase rotating coordinates of the inverter, in double closed loop control theory, the purpose of control of the inverter by decoupling control and PI control is achieved. From the point of energy on direct power control system, the active, inactive power of output AC of inverter are calculated ,and suitable space voltage vector was selected after comparing with the given values to realize the direct control of the power set point. The basic theory of two control strategies and implementation method are included, and the simulation model was established based on MATLAB/Simulink. And their simulation results, characteristics of two kinds of control methods were compared through simulation data analysis. On the basic of results, the direct power control is better than the double closed loop control.

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Nanotechnology and Advanced Materials II View Preview

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Periodical:

Advanced Materials Research (Volume 818)

Pages:

212-217

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.818.212

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Online since:

September 2013

Authors:

Yong Yang, Guang Ming Lan, Zhi Qi Sun, Jian Guo, Zhong Qiang Zhang

Keywords:

Direct Power Control, Double Closed Loop Control, MATLAB

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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