A DC voltage closed-loop control method and a system of a single-phase converter
A technology of closed-loop control and DC voltage, which is applied in the field of power electronics and electric transmission, and can solve problems such as the inability to effectively eliminate the adverse effects of secondary pulsation on the DC side
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[0071] As a specific implementation manner, the above-mentioned voltage feedback signal acquisition module may include:
[0072] The preset sliding window time acquisition unit is used to obtain the preset sliding window time of the sliding average filter;
[0073] The acquisition unit is used to acquire the voltage feedback signal according to the preset sliding window time;
[0074] Wherein, the preset sliding window time is 0.01s or 0.02s.
[0075] As a specific implementation, the first-order equivalent inertial feedback delay link is in, T w is the preset sliding window time.
[0076] As a specific implementation, the transfer model is Among them, the PI controller is The controlled object model is u dcref is the preset voltage, U s is the phase voltage amplitude, C dc is the total capacitance of the DC side.
[0077] As a specific implementation, the integral time constant T of the PI controller I is the integral time constant T of the first-order equiva...
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