Analysis of Maximum Power Point Mechanism of Small Wind Power Generation System Using SRG

Author(s):  
Rin Kakinuma ◽  
Naoki Yamamura ◽  
Muneaki Ishida
2013 ◽  
Vol 572 ◽  
pp. 165-168
Author(s):  
Su Xiang Qian ◽  
Yuan Sheng Xiong ◽  
Yan Zhan ◽  
Ju Wu Xu ◽  
Xiao Mei Shen

The small scale wind power generation system is connected to DC micro-grid, which is composed of the small scale wind power generation system, battery, load, DC/AC converter, DC/DC converter, bidirectional DC/DC converter and DC bus. Simulation research is done for the small scale wind turbine model which is connected to the DC micro-grid. The output voltage of boost converter will change in real time by adjusting the PWM duty cycle. The maximum power point of wind power generation system is tracked by using the MPPT(maximum power point tracking) control strategy of perturbation and observation. The simulation results of DC micro-grid show that the tracking of wind turbine maximum power point is normal in the system.


2012 ◽  
Vol 608-609 ◽  
pp. 662-667
Author(s):  
Hong Hai Kuang ◽  
Zheng Qiu Wu ◽  
Sheng Qing Li

In order to make wind power generation system be free from outside interference, and make doubly-fed induction generator (DFIG) easily operate at maximum power point under variable wind speed, simultaneous perturbation stochastic approximation (SPSA) algorithm for tracking maximum power of wind power generation system is proposed in this paper. SPSA algorithm indirectly controls DFIG speed through adjusting duty cycle of power converter, makes system operate at maximum power point under any wind speed, thus the maximum power output is transmitted to the load. SPSA algorithm not only does not need to set up PID three parameter values, but also does not anemometer and tachometer in practical applications. Simulation results show no matter how wind speed changes, SPSA algorithm can effectively improve power output of wind power generation system, and make tip speed ratio and power coefficient be near optimum value, reduce system cost.


2014 ◽  
Vol 492 ◽  
pp. 579-582 ◽  
Author(s):  
Wu Wang

The wind speed is varying with fluctuations and random feature, as for conventional HCS algorithm, the oscillation around maximum power point (MPP) was serious, which can cause vibrations of crankshaft and mechanical parts wear, also the misleading decision of conventional HCS method causes the failure in keeping maximum power. A new HCS method for MPPT control was proposed, the principle of MPPT was analyzed and new algorithm was programmed, the new method inherits the advantages of variable step HCS, so that the MPP reached rapidly. Also the detection and halt mechanism was introduced, which can reduce searching direction misleading and rotor speed oscillations at MPP, the feasibility and effectiveness of the proposed MPPT strategy have been verified through simulations and experimental results.


2013 ◽  
Vol 367 ◽  
pp. 393-396 ◽  
Author(s):  
Yong Qiang Dong ◽  
Wu Wang

Traditional MPPT control strategy by hill climbing searching for wind power generation system (WPGS) dependent on wind turbines parameters, the oscillation around maximum power point (MPP) was serious. A new variable step perturbation MPPT was presented based on fuzzy control, the variable perturb step was determined with the power characteristic curves point slope, the control system was described with fuzzy language for maximum power capture, the principle of MPPT was analyzed and the variable step method was adopted with fuzzy control, the simulation result shows that this advanced control strategy could improve tracking speed, enhance the stability and the oscillation around maximum power point reduced.


2013 ◽  
Vol 313-314 ◽  
pp. 813-816
Author(s):  
Yue Hua Huang ◽  
Huan Huan Li ◽  
Guang Xu Li

Aiming at maximum wind power tracking control problem of wind power generation system below the rated wind speed, this paper presents an improved MPPT control strategy by using turbulent part of the wind speed as a search signal to find the maximum power point. By using the Matlab/Simulink simulation of the wind power generation system below the rated wind speed, this paper proves the effectiveness of this control strategy. The simulation results show that improved MPPT control strategy can well control the wind turbine speed to track the wind speed changes to maintain optimum tip speed ratio and the maximum power coefficient.


2013 ◽  
Vol 684 ◽  
pp. 451-455
Author(s):  
Gang Wang

In view of the present problem in low efficiency of the wind-light complementary power generation system, the tracking control strategy on the system maximum power point was proposed based on the perturbation and observation method, and overall structure of wind-light complementary power generation system is introduced. The simulation study on the system maximum power control was carried out based on the MATLAB/ SIMULINK, and the results of simulation showed that the tracking control of the system maximum power point was able to be achieved and the utilization efficiency of the system energy was also improved.


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