Direct-current bus voltage control method suitable for low-wind-speed distributed wind power generation
A technology of DC bus voltage and control method, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of poor control accuracy, insufficient dynamic performance, complex control structure, etc. The control strategy is simple and easy to implement, and the effect of high executable degree
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[0050] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0051] like figure 1 The low wind speed distributed wind power generation system shown, the low wind speed distributed wind power generation system includes: wind turbine, direct drive permanent magnet synchronous wind generator D-PMSG, machine side converter, voltage stabilizer capacitor C, grid side converter The low wind speed distributed wind power generation system can be directly connected to the AC power distribution network. The low wind speed distributed wind power generation system also includes a super capacitor, which is connected in parallel with a bidirectional DC / DC converter. It is then connected to the DC bus between the machine-side converter and the stabilizing capacitor C, and the DC / DC converter controls the charging and discharging of the super capacitor in any control period T to maintain the DC bus injected into the wind power gene...
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