Alternating-current power spring feedback linearization decoupling control method
A technology of feedback linearization and electric springs, which is applied in the direction of AC network circuit, AC network voltage adjustment, power network operating system integration, etc., can solve the problem of difficult to achieve precise control of wide-range power, not wide stable domain, and increased power controller design issues of complexity
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Embodiment 1
[0052] refer to Figure 1 ~ Figure 3 , which is the first embodiment of the present invention, this embodiment provides an AC electric spring feedback linearization decoupling control method, including:
[0053] S1: According to the AC microgrid structure with AC power springs, construct the dynamic model of AC power springs in the dq rotating coordinate system.
[0054] According to the AC microgrid structure with AC power springs, such as figure 1 , and according to KCL (Kirchhoff's Current Law, Kirchhoff's current law), KVL (Kirchhoff Voltage Laws, Kirchhoff's voltage law), define the dynamic mathematical model of the AC electric spring in the dq rotating coordinate system:
[0055]
[0056] Among them, the coefficient matrix A 1 = Z C / L G (Z C +Z NC ), A 2 =(R G Z C +Z C Z NC +R G Z NC ) / L G (Z C +Z NC ), A 3 =1 / L G , i d i q are the d and q components of the AC bus current i, v ES,d , v ES,q Respectively, the AC power spring output voltage v ES ...
Embodiment 2
[0094] In order to verify and explain the technical effect adopted in this method, this embodiment chooses the vector decoupling control (vector decoupling control, VDC) method and adopts this method to carry out comparative tests, and compares the test results by means of scientific demonstration to verify the results of this method. have real effects.
[0095] The dynamic performance and stability of the vector decoupling control method are poor.
[0096] In order to verify that this method has a shorter adjustment time and better stability than the vector decoupling control method, in this embodiment, the vector decoupling control method and this method will be used to measure and compare the control performance of the AC electric spring.
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