Method for controlling maximum power tracing based on wind power generation
A technology of maximum power tracking and power tracking, which is applied in the control of wind turbines, wind power generation, wind turbines, etc., can solve the problems of ignoring the dynamic process performance of wind turbine tracking, affecting the accuracy of maximum power tracking, and the error of maximum power curves, etc., to achieve improved Tracking Accuracy, Ease of Implementation, Effects of Improving Accuracy
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Embodiment 1
[0061] A method of maximum power tracking control based on wind power generation, see figure 1 , including the following steps:
[0062] Step 1: Initialize, obtain the initial speed ω(0) of the fan, set the stop power tracking threshold setPd(0), adjust the frequency f(0), the initial step size Step(0), the minimum speed adjustment threshold setSd and the dynamic interval are different The time period is T, and the stop power tracking threshold setPd(0) is obtained according to the formula ⑤:
[0063] setPd(k)=λ setPd(k) ·P m (k)·(1-η mppt ) ⑤,
[0064] Among them, P m (k) Take the maximum output power when the wind speed is cut in. When the wind speed is cut in, k=0, that is, P m (k)=P m (0); setPd(k) To adjust the coefficient, the value range is (0,1], and then it can be adjusted according to P m (k) the size is adjusted appropriately; η mppt is the maximum power tracking efficiency achieved by the expected target, then the value of setPd(0) is obtained by formula ...
Embodiment 2
[0103] The method of using a 150W vertical axis wind power generating set and maximum power tracking control based on wind power generation is the same as in embodiment 1, and specifically includes the following steps:
[0104] Step 1: Initialize, obtain the initial speed of the fan ω(0), set the stop power tracking threshold setPd(0)=1.5W, adjust the frequency f(0)=5, the initial step size Step(0)=15, the minimum speed Adjust the threshold setSd=0RPM and the duration of different dynamic intervals T=135s, the stop power tracking threshold setPd(0) is obtained according to the formula ⑤:
[0105] setPd(k)=λ setPd(k) ·P m (k)·(1-η mppt ) ⑤,
[0106] Among them, P m (k) Take the maximum output power when the wind speed is cut in. When the wind speed is cut in, k=0, that is, P m (k)=P m (0)=5.0W; λ setPd(k) To adjust the coefficient, the value is 1, and then according to P m (k) the size is adjusted appropriately; η mppt The maximum power tracking efficiency achieved for...
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